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Products Issued Before and During the
January 28-29, 2010 Winter Storm

This is a collection of products issued by the National Weather Service office in Norman, Oklahoma before and during the January 28-29, 2010 winter storm. The products included are:

  • Area Forecast Discussion (AFD) - provides technical reasoning about the forecast
  • Hazardous Weather Outlook (HWO) - provides a general look at any hazardous weather in the next 7 days.
  • Short Term Forecast (NOW) - provides a description of how the weather is expected to evolve in the next few hours.
  • Special Weather Statement (SPS) - issued for high impact weather events to describe the possible impacts on the public.
  • Warning Decision Update (AWU) - issued as a technical discussion of mesoscale or storm scale features occurring with an ongoing storm.
  • Winter Weather Message (WSW) - any watches, warnings, or advisories concerning winter weather.

These products will be placed below in chronological order, starting several days prior to the event.

January 24, 2010 - 1123 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1123 AM CST SUN JAN 24 2010

OKZ004>048-050>052-TXZ083>090-251100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1123 AM CST SUN JAN 24 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
AN UPPER LEVEL DISTURBANCE WILL DROP SOUTHWARD AROUND THE BACK SIDE
OF A DEPARTING TROUGH. THE DISTURBANCE WILL WORK WITH LIMITED
MOISTURE TO PRODUCE LIGHT RAIN SHOWERS IN WESTERN NORTH TEXAS THIS
AFTERNOON. INSTABILITY IS EXPECTED TO REMAIN NEAR ZERO...AND THUNDER
IS NOT EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST MONDAY JAN 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...5 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE LATE WEEK STORM SYSTEM MAY PRODUCE HAZARDOUS WINTER WEATHER. IT
APPEARS LIKELY THAT RAIN WILL CHANGE TO SNOW...WITH SOME
ACCUMULATION OF SNOW AFFECTING PARTS OF OKLAHOMA AND POSSIBLY
WESTERN NORTH TEXAS. AT THE SAME TIME...NORTH WINDS WILL INCREASE...
RESULTING IN SOME BLOWING AND DRIFTING. A NARROW ZONE OF MIXED
PRECIPITATION...INCLUDING ICE...IS ALSO POSSIBLE. WHILE THE STORM
SYSTEM IS EXPECTED TO HAVE THESE BASIC FEATURES...ITS TRACK IS MUCH
LESS CERTAIN. FORECASTS OF THE LOCATION AND TIMING OF WINTER WEATHER
IMPACTS WILL BECOME MORE DETAILED AS WEDNESDAY APPROACHES.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED NEAR
5 AM MONDAY.

$$

MAXWELL/BURKE
January 24, 2010 - 425 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
425 PM CST SUN JAN 24 2010

OKZ004>048-050>052-TXZ083>090-251100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
425 AM CST SUN JAN 24 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL OCCUR OVER FAR SOUTHWEST OKLAHOMA AND
WESTERN NORTH TEXAS INTO THE EARLY EVENING. AFTER SUNSET...THE
ACTIVITY WILL DISSIPATE.

DISCUSSION...
AN UPPER-LEVEL DISTURBANCE WILL DROP SOUTHWARD AROUND THE BACK SIDE
OF A DEPARTING TROUGH. THE DISTURBANCE WILL WORK WITH LIMITED
MOISTURE TO PRODUCE RAIN SHOWERS AND ISOLATED THUNDERSTORMS OVER
WESTERN NORTH TEXAS AND FAR SOUTHWEST OKLAHOMA. ALTHOUGH INSTABILITY
WILL REMAIN VERY WEAK...AND SEVERE WEATHER IS NOT EXPECTED...SOME 40
TO 50 MPH WIND GUSTS WILL BE POSSIBLE WITH THE STORMS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST MONDAY JAN 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...LESS THAN 10 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE LATE WEEK STORM SYSTEM MAY PRODUCE HAZARDOUS WINTER WEATHER. IT
APPEARS LIKELY THAT RAIN WILL CHANGE TO SNOW...WITH SOME
ACCUMULATION OF SNOW AFFECTING PARTS OF OKLAHOMA AND POSSIBLY
WESTERN NORTH TEXAS. AT THE SAME TIME...NORTH WINDS WILL INCREASE...
RESULTING IN SOME BLOWING AND DRIFTING. A NARROW ZONE OF MIXED
PRECIPITATION...INCLUDING ICE...IS ALSO POSSIBLE. WHILE THE STORM
SYSTEM IS EXPECTED TO HAVE THESE BASIC FEATURES...ITS TRACK IS MUCH
LESS CERTAIN. FORECASTS OF THE LOCATION AND TIMING OF WINTER WEATHER
IMPACTS WILL BECOME MORE DETAILED AS WEDNESDAY APPROACHES.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED NEAR
5 AM MONDAY.

$$

MAXWELL/BURKE
January 24, 2010 - 530 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
530 PM CST SUN JAN 24 2010

.AVIATION...
25/00Z TAF ISSUANCE...VFR CONDITIONS EXPECTED TO PREVAIL AT ALL
TERMINALS. DISSIPATING SHOWERS OVER WESTERN NORTH TEXAS MAY AFFECT
KSPS BRIEFLY EARLY IN FORECAST...SO WILL INCLUDE TEMP GROUP DOWN
THERE. OTHERWISE...DECREASING WINDS THIS EVENING AND THEN INCREASING
AGAIN TOMORROW ESPECIALLY ACROSS NORTHERN AND CENTRAL OKLAHOMA.
MID-HIGH CLOUDS WILL ALSO INCREASE TOMORROW.

AMD NOT SKED WILL BE INCLUDED ON KHBR TAF DUE TO SYSTEM FAILURE AND
ALSO ON KLAW DUE TO ERRORS WITH SKY COVER.

&&

.DISCUSSION...
MID-LEVEL CLOUDS WERE EXITING OKLAHOMA THIS AFTERNOON WHILE THE
LAST WAVE OF THE UPPER MIDWEST CYCLONE PASSED. CLOUDS SHOULD BE
LIMITED TO SCATTERED AND BROKEN CIRRUS THROUGH TUESDAY. MILD
WEATHER WILL BEGIN THE WEEK MONDAY THEN A WARMING TREND COMES
THROUGH WEDNESDAY WHEN THE UPPER PATTERN SHIFTS TO ALLOW A SHORT
WAVE RIDGE OVER THE SOUTHERN PLAINS. TEMPERATURES TUESDAY AND
WEDNESDAY ARE EXPECTED TO BE 5 TO 10 DEGREES ABOVE MID-WINTER
NORMALS. WEDNESDAY, HOWEVER WILL BE A TRANSITION DAY. A FRONT IS
EXPECTED TO MOVE ACROSS OKLAHOMA THE SECOND HALF OF WEDNESDAY
COINCIDENT WITH THE APPROACH OF A STRONG UPPER STORM SYSTEM FROM
THE SOUTHWEST. MODEL TRENDS HAVE PERSISTED TO INDICATE A GOOD
CHANCE FOR SNOW IN NORTHERN OKLAHOMA AND GOOD CHANCE FOR RAIN IN
THE SOUTH OF THE STATE AND INTO PARTS OF NORTHERN TEXAS. MOST OF
THE SNOW IN NORTHERN OKLAHOMA APPEARS TO HAPPEN LATE WEDNESDAY
AND EARLY THURSDAY, AND RAIN MAY LINGER INTO THURSDAY EVENING IN
SOUTHEAST OKLAHOMA. GUSTY NORTH WINDS THURSDAY WILL MAKE IT A
BLUSTERY DAY. THE COOLER AIR MASS IS FORECAST TO GIVE TEMPERATURES
AROUND 10 DEGREES BELOW SEASONABLE NORMALS THURSDAY AND FRIDAY.
THIS AIR MASS IS EXPECTED TO DISSIPATE LATER IN THE WEEKEND WHEN
SEASONABLE NORMAL TEMPERATURES OF 20S AT NIGHT AND 40S IN THE DAY
RETURN.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 32 53 29 51 / 0 0 0 0
HOBART OK 29 56 27 54 / 0 0 0 0
WICHITA FALLS TX 33 59 30 65 / 20 0 0 0
GAGE OK 23 54 18 49 / 0 0 0 0
PONCA CITY OK 26 47 24 44 / 10 0 0 0
DURANT OK 36 59 32 60 / 0 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

22/09
January 24, 2010 - 825 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
825 PM CST SUN JAN 24 2010

.UPDATE...
WITH THE LOSS OF HEATING AND UPPER WAVE MOVING TO OUR SOUTH...
PRECIP HAS ALMOST DISSIPATED AND WHAT THERE IS OF IT HAS MOVED SOUTH
OF THE AREA. WILL UPDATE TO REMOVE POPS FOR THE REMAINDER OF THE
NIGHT.

30

&&

.PREV DISCUSSION... /ISSUED 656 PM CST SUN JAN 24 2010/

.DISCUSSION...
MADE ADJUSTMENTS ON THIS EVENING FORECAST /BRIEF LIGHT RAIN OVER
WESTERN NORTH TEXAS/ AND ALSO ON BIG STORM HEADED OUR WAY FOR
WEDNESDAY- THURSDAY NEXT WEEK. MODEL AGREEMENT IS FAIRLY GOOD WITH
POTENTIAL FOR FAIRLY SUBSTANTIAL WINTER STORM. HOWEVER...THIS FAR
OUT...THERE WILL LIKELY BE SOME CHANGES WITH TIMING AND EXACT
TRACK OF UPPER SYSTEM/ARRIVAL OF COLDER AIR. LEFT MIXES IN THERE
WHERE CONFIDENCE IS NOT SO HIGH...BUT AT THIS TIME...FORECAST DATA
INDICATES THAT THE DOMINANT PRECIP TYPE WILL BE RAIN AND
SNOW...WITH HEAVY ACCUMS LIKELY. STAY TUNED.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 32 53 29 51 / 0 0 0 0
HOBART OK 29 56 27 54 / 0 0 0 0
WICHITA FALLS TX 33 59 30 65 / 70 0 0 0
GAGE OK 23 54 18 49 / 0 0 0 0
PONCA CITY OK 26 47 24 44 / 10 0 0 0
DURANT OK 36 59 32 60 / 0 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

30/11
January 24, 2010 - 830 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
830 PM CST SUN JAN 24 2010

OKZ004>048-050>052-TXZ083>090-251100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
830 AM CST SUN JAN 24 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...RES OF TONIGHT

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.

DISCUSSION...
THE UPPER DISTURBANCE RESPONSIBLE FOR ISOLATED THUNDERSTORMS EARLIER
ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS HAS MOVED OUT OF
THE AREA. AS THIS OCCURS ALONG WITH THE LOSS OF DAYTIME HEATING NO
ADDITIONAL THUNDERSTORM ACTIVITY IS ANTICIPATED THROUGH TONIGHT.


PROBABILITY TABLE...
VALID THROUGH 700 AM CST MONDAY JAN 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...5 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE LATE WEEK STORM SYSTEM MAY PRODUCE HAZARDOUS WINTER WEATHER. IT
APPEARS LIKELY THAT RAIN WILL CHANGE TO SNOW...WITH SOME
ACCUMULATION OF SNOW AFFECTING PARTS OF OKLAHOMA AND POSSIBLY
WESTERN NORTH TEXAS. AT THE SAME TIME...NORTH WINDS WILL INCREASE...
RESULTING IN SOME BLOWING AND DRIFTING. A NARROW ZONE OF MIXED
PRECIPITATION...INCLUDING ICE...IS ALSO POSSIBLE. WHILE THE STORM
SYSTEM IS EXPECTED TO HAVE THESE BASIC FEATURES...ITS TRACK IS MUCH
LESS CERTAIN. FORECASTS OF THE LOCATION AND TIMING OF WINTER WEATHER
IMPACTS WILL BECOME MORE DETAILED AS WEDNESDAY APPROACHES.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED NEAR
5 AM MONDAY.

$$

11/30
January 24, 2010 - 1045 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1045 PM CST SUN JAN 24 2010

.AVIATION...
25/06Z TAF ISSUANCE...VFR CONDITIONS EXPECTED TO PREVAIL AT ALL
TERMINALS. INCREASING NORTHWEST WINDS ONCE MIXING COMMENCES TOMORROW
MORNING...STRONGEST NORTH-CENTRAL OKLAHOMA. MID-HIGH CLOUDS WILL
ALSO INCREASE LATE IN THE DAY.

AMD NOT SKED WILL CONTINUE ON KHBR AND KLAW TERMINALS.

&&

.UPDATE...
WITH THE LOSS OF HEATING AND UPPER WAVE MOVING TO OUR SOUTH...
PRECIP HAS ALMOST DISSIPATED AND WHAT THERE IS OF IT HAS MOVED SOUTH
OF THE AREA. WILL UPDATE TO REMOVE POPS FOR THE REMAINDER OF THE
NIGHT.

30

&&

.PREV DISCUSSION... /ISSUED 656 PM CST SUN JAN 24 2010/

.DISCUSSION...
MADE ADJUSTMENTS ON THIS EVENING FORECAST /BRIEF LIGHT RAIN OVER
WESTERN NORTH TEXAS/ AND ALSO ON BIG STORM HEADED OUR WAY FOR
WEDNESDAY- THURSDAY NEXT WEEK. MODEL AGREEMENT IS FAIRLY GOOD WITH
POTENTIAL FOR FAIRLY SUBSTANTIAL WINTER STORM. HOWEVER...THIS FAR
OUT...THERE WILL LIKELY BE SOME CHANGES WITH TIMING AND EXACT
TRACK OF UPPER SYSTEM/ARRIVAL OF COLDER AIR. LEFT MIXES IN THERE
WHERE CONFIDENCE IS NOT SO HIGH...BUT AT THIS TIME...FORECAST DATA
INDICATES THAT THE DOMINANT PRECIP TYPE WILL BE RAIN AND
SNOW...WITH HEAVY ACCUMS LIKELY. STAY TUNED.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 32 53 29 51 / 0 0 0 0
HOBART OK 29 56 27 54 / 0 0 0 0
WICHITA FALLS TX 33 59 30 65 / 70 0 0 0
GAGE OK 23 54 18 49 / 0 0 0 0
PONCA CITY OK 26 47 24 44 / 10 0 0 0
DURANT OK 36 59 32 60 / 0 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

30/11
January 25, 2010 - 449 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
449 AM CST MON JAN 25 2010

OKZ004>048-050>052-TXZ083>090-251800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
449 AM CST MON JAN 25 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.

DISCUSSION...
A DRY AND STABLE AIRMASS WILL PREVENT THUNDERSTORM DEVELOPMENT
THROUGH TONIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST TUESDAY JAN 26.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...0 PERCENT.

OTHER HAZARDOUS WEATHER...
STRONG NORTHWEST WINDS WILL DEVELOP TODAY ACROSS PORTIONS OF
OKLAHOMA... ESPECIALLY ACROSS PORTIONS OF NORTHERN AND CENTRAL
OKLAHOMA. PLEASE REFER TO THE WIND ADVISORY FOR FURTHER DETAILS.

THE STRONG WINDS AND DRY CONDITIONS WILL ELEVATE THE WILDFIRE
POTENTIAL ACROSS APPROXIMATELY THE NORTHERN HALF OF OKLAHOMA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE LATE WEEK STORM SYSTEM MAY PRODUCE HAZARDOUS WINTER WEATHER. IT
APPEARS LIKELY THAT RAIN WILL CHANGE TO SNOW... WITH SOME
ACCUMULATION OF SNOW AFFECTING PARTS OF OKLAHOMA AND WESTERN NORTH
TEXAS. AT THE SAME TIME...NORTH WINDS WILL INCREASE... RESULTING IN
SOME BLOWING AND DRIFTING. A NARROW ZONE OF MIXED PRECIPITATION...
INCLUDING ICE...IS ALSO POSSIBLE. WHILE THE STORM SYSTEM IS EXPECTED
TO HAVE THESE BASIC FEATURES...ITS TRACK IS MUCH LESS CERTAIN.
FORECASTS OF THE LOCATION AND TIMING OF WINTER WEATHER IMPACTS WILL
BECOME MORE DETAILED AS WEDNESDAY APPROACHES.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED NEAR
NOON TODAY.

$$

MAXWELL
January 25, 2010 - 515 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
515 AM CST MON JAN 25 2010

.AVIATION...
VFR CONDITIONS EXPECTED THROUGH THE PERIOD WITH ONLY SOME MID/HIGH
CLOUDS. MAIN ISSUE TODAY WILL BE STRONG NORTHWEST WINDS FROM MID
MORNING THROUGH THE AFTERNOON. STRONGEST WINDS EXPECTED ACROSS
NORTHERN OK WHERE SUSTAINED 25 TO 30 KNOT WINDS LIKELY. WINDS SHOULD
DIMINISH QUICKLY AROUND SUNSET AS AMS DECOUPLES.

&&

.PREV DISCUSSION... /ISSUED 433 AM CST MON JAN 25 2010/

.DISCUSSION...
STRONG WINDS WILL BE THE MAIN CONCERN FOR TODAY ACROSS PARTS OF THE
FA. ANOTHER IMPULSE IS EXPECTED TO ROTATE AROUND THE WEST SIDE OF
THE UPPER TROUGH OVER THE CENTRAL PLAINS TODAY. STRONG WINDS OFF THE
DECK WITH H85 WINDS OF 40 TO 50 KTS IN NRN PARTS OF THE FA. FAIRLY
GOOD MIXING EXPECTED AGAIN TODAY AND WILL GO WITH WIND ADVY FOR NRN
PARTS OF THE FA TODAY. EXPECT WINDS TO DROP OFF FAIRLY QUICKLY THIS
EVENING AS AMS DECOUPLES. FOCUS THEN SHIFTS TO POTENTIAL WINTER
STORM EXPECTED TO IMPACT THE AREAS MIDWEEK. SOME LIGHT RAIN
WILL BE POSSIBLE WEDNESDAY WITH DEVELOPING WAA AS UPPER TROUGH MOVES
INTO THE SOUTHWESTERN U.S. WILL TREND FORECAST TOWARD THE SLOWER
ECMWF SOLUTION WHICH HAS SHOWN GOOD RUN TO RUN CONSISTENCY. COLD
FRONT IS EXPECTED TO SURGE SOUTHWARD INTO THE AREA WEDNESDAY NIGHT.
LATER RUNS HAVE SHOWN LOW LEVEL COLD AIR SURGING FARTHER SOUTH AHEAD
OF THE SYSTEM WHICH WHICH COULD LEAD TO A PERIOD FREEZING
PRECIPITATION BEFORE COLD AIR DEEPENS AND PRECIP CHANGES OVER TO
SLEET AND SNOW. FOR NOW WILL BRING WINTRY PRECIP INTO ABOUT THE NW
HALF OF THE WEDNESDAY NIGHT AND THEN SPREAD IT SOUTHEASTWARD ACROSS
THE REMAINDER OF THE FA DURING THE DAY THURSDAY. BY LATE
THURSDAY/THURSDAY NIGHT ALL SNOW EXPECTED AS SYSTEM BEGINS TO EXIT
THE AREA. STILL UNCERTAINTIES WITH THE EVOLUTION OF THE SYSTEM
THIS FAR OUT...BUT IT LOOKS LIKE SIGNIFICANT SNOW/ICE WILL BE
POSSIBLE FOR PARTS OF THE FA WITH THIS STORM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 52 27 53 40 / 0 0 0 10
HOBART OK 56 26 55 41 / 0 0 0 0
WICHITA FALLS TX 57 29 62 44 / 0 0 0 10
GAGE OK 52 19 53 32 / 0 0 0 10
PONCA CITY OK 47 24 48 37 / 0 0 0 20
DURANT OK 56 31 58 43 / 0 0 0 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WIND ADVISORY FROM 10 AM THIS MORNING TO 6 PM CST THIS EVENING
FOR OKZ004>008-010>013-017>020.

TX...NONE.
&&

$$

25/02
January 25, 2010 - 1136 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1136 AM CST MON JAN 25 2010

OKZ004>048-050>052-TXZ083>090-260145-
/O.NEW.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
1136 AM CST MON JAN 25 2010

...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
LATE THURSDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT.

* AFTER TWO WEEKS OF RELATIVELY MILD WEATHER... A WINTER STORM
WILL TAKE AIM ON THE SOUTHERN PLAINS AROUND THURSDAY. COLD AIR
CURRENTLY IN PLACE OVER CANADA WILL MOVE INTO THE AREA WEDNESDAY
BEHIND A STRONG COLD FRONT. AS THE COLD AIR DEEPENS OVER THE
AREA LATE WEDNESDAY INTO THURSDAY...A STORM SYSTEM WILL
APPROACH FROM THE WEST. A VARIETY OF WINTER WEATHER WILL BE THE
RESULT.


* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN MAY BEGIN TO ACCUMULATE ON
POWER LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE
MOST LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATIONS APPEARS TO BE
ACROSS SOUTHERN OKLAHOMA AND PARTS OF WESTERN NORTH TEXAS. SLEET AND
SNOW ACCUMULATIONS APPEAR MORE LIKELY ACROSS CENTRAL AND
NORTHERN OKLAHOMA ALTHOUGH SOME FREEZING RAIN WILL BE POSSIBLE.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS AROUND 25 TO 35
MPH WILL ADD ADDITIONAL STRESS TO POWER LINES THAT HAVE ICE
ACCUMULATIONS. SOME BLOWING AN DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 25, 2010 - 1200 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CST MON JAN 25 2010

OKZ004>048-050>052-TXZ083>090-261100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1200 PM CST MON JAN 25 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.

DISCUSSION...
A DRY AND STABLE AIRMASS WILL REMAIN IN PLACE.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST TUESDAY JAN 26.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...0 PERCENT.

OTHER HAZARDOUS WEATHER...
STRONG NORTHWEST WIND WILL PERSIST THROUGH MID AFTERNOON IN NORTHERN
AND CENTRAL OKLAHOMA. A WIND ADVISORY IS VALID.

THE STRONG WINDS AND DRY CONDITIONS WILL ELEVATE THE WILDFIRE
POTENTIAL ACROSS IN THE NORTHWEST THIRD OF OKLAHOMA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
IT APPEARS LIKELY THAT RAIN WILL CHANGE TO SNOW... WITH ACCUMULATION
OF SNOW AFFECTING PART OF OKLAHOMA AND WESTERN NORTH TEXAS. AT THE
SAME TIME...NORTH WINDS WILL INCREASE... RESULTING IN SOME BLOWING
AND DRIFTING...ESPECIALLY IN NORTHERN OKLAHOMA. SLEET AND FREEZING
RAIN IS MORE LIKELY IN SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS
BEFORE THE CHANGE TO SNOW. THE WINTER PRECIPITATION IS EXPECTED TO
OCCUR FROM THURSDAY MORNING UNTIL FRIDAY MORNING.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
TUESDAY.
$$
January 25, 2010 - 515 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
515 PM CST MON JAN 25 2010

.AVIATION...
WIND SPEEDS WILL DROP OFF QUICKLY RIGHT AROUND THE BEGINNING OF
FORECAST PERIOD TO LESS THAN 10KTS. OTHEWISE JUST SOME HIGH AND MID
CLOUDS OVERNIGHT INTO TUE AS SFC RIDGE GRADUALLY SHIFTS EAST
WINDS SHIFT BACK AROUND TO THE SOUTH FROM WEST TO EAST DURING THE
DAY TOMORROW... MOST WILL REMAIN AT 10KTS OR LESS.

30

&&

.PREV DISCUSSION... /ISSUED 345 PM CST MON JAN 25 2010/

.DISCUSSION...
STRONG...GUSTY NORTHWEST WINDS WILL CONTINUE TO DECREASE THROUGH
THE AFTERNOON HOURS AS SUNSET APPROACHES. DRY AIRMASS IN PLACE
ALONG WITH LIGHT WINDS WILL ALLOW TEMPERATURES TO FALL BELOW
FREEZING MOST LOCATIONS TONIGHT. SHORTWAVE RIDGING AND INCREASING
SOUTH WINDS ON TUESDAY WILL ELEVATE FIRE WEATHER CONDITIONS
TUESDAY AFTERNOON...ESPECIALLY WESTERN 1/3 OF FA.

COLD CANADIAN AIR WILL BEGIN TO MOVE SOUTH TUESDAY INTO WEDNESDAY
AS COLD VORTEX OVER THE HUDSON BAY REGION MOVES SOUTH. LEADING
EDGE OF COLD AIR/COLD FRONT WILL ENTER NORTHWEST OKLAHOMA AROUND
NOON WEDNESDAY. MEANWHILE...TROUGH/UPPER LOW OVER NORTHERN BAJA WILL
MOVE EAST TOWARDS THE SOUTHERN PLAINS.

DETAILS ON STORM SYSTEM LATE WEDNESDAY INTO EARLY FRIDAY MORNING
(WITH REGARDS TO CHANGE OVER FROM SLEET/SNOW---FREEZING RAIN/SLEET
ETC.) ARE STILL UNCERTAIN. HOWEVER LARGE ENOUGH PART OF FA WILL BE
ADVERSELY IMPACTED THAT A WINTER STORM WATCH HAS BEEN ISSUED FOR
ENTIRE FA. ANOTHER CONCERN WITH THIS SYSTEM WILL BE STRONG WINDS
WHICH WILL CAUSE BLOWING AND DRIFTING OF SNOW AND ADDED STRESS ON
ICE COVERED POWER LINES. WITH THE POTENTIAL FOR STRONG WINDS WITH
THIS SYSTEM...PREFERRED PRECIP TYPE WILL BE RAIN AND SLEET.

MOST OF THE PRECIP WILL END WITH THIS SYSTEM EARLY FRIDAY BUT
WINDY AND COLD CONDITIONS WILL PREVAIL. LOWS AND HIGHS FOR
FRIDAY INTO SUNDAY WILL BE VERY DEPENDENT ON AMOUNT OF SNOW/SLEET
SO HAVE GENERALLY GONE WITH A BLEND BETWEEN WARMER MEX NUMBERS
AND COOLER HPC GUIDANCE.

HAVE ADDED A SLIGHT CHANCE OF MAINLY LIGHT RAIN FOR MONDAY AS MODELS
INDICATE ANOTHER SHORTWAVE APPROACHING THE AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 51 37 55 / 0 0 0 10
HOBART OK 26 54 35 53 / 0 0 0 0
WICHITA FALLS TX 29 60 44 64 / 0 0 0 10
GAGE OK 19 51 27 47 / 0 0 0 0
PONCA CITY OK 24 47 33 49 / 0 0 10 10
DURANT OK 31 58 43 62 / 0 0 0 30

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WIND ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ004>008-010>013-
015>020-023>027.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

SIX
January 25, 2010 - 810 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
810 PM CST MON JAN 25 2010

OKZ004>048-050>052-TXZ083>090-261115-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
810 PM CST MON JAN 25 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...


* A STRONG WINTER STORM WILL TAKE AIM ON THE SOUTHERN PLAINS
THURSDAY INTO FRIDAY. COLD AIR CURRENTLY IN PLACE OVER WESTERN
CANADA WILL MOVE OVER THE REGION LATE WEDNESDAY BEHIND A STRONG
COLD FRONT. A STRONG STORM SYSTEM WILL THEN APPROACH FROM THE
WEST EARLY THURSDAY...RESULTING IN A VARIETY OF WINTER WEATHER.

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN MAY BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATIONS APPEARS TO BE
ACROSS SOUTHERN OKLAHOMA AND PARTS OF WESTERN NORTH TEXAS. SLEET
AND SNOW ACCUMULATIONS APPEAR MORE LIKELY ACROSS CENTRAL AND
NORTHERN OKLAHOMA ALTHOUGH SOME FREEZING RAIN WILL ALSO BE
POSSIBLE ACROSS CENTRAL OKLAHOMA.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 35 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AN DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 25, 2010 - 1100 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1100 PM CST MON JAN 25 2010

.AVIATION...
LIGHT NORTHWEST WINDS OVERNIGHT WITH A FEW HIGH CLOUDS. SLOW
TRANSITION TO SOUTH WINDS DURING THE DAY ON TUESDAY AS SFC RIDGE
SLIDES EAST. INCREASING MID/HIGH CLOUDS BY LATE IN FORECAST PERIOD.

30

&&

PREV DISCUSSION... /ISSUED 951 PM CST MON JAN 25 2010/

.DISCUSSION...
NO CHANGES EXPECTED THIS EVENING. NEWEST MODELS COMING IN THIS
EVENING STILL POINT TO SUBSTANTIAL WINTER WEATHER EVENT THURSDAY
INTO FRIDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 51 37 55 / 0 0 0 10
HOBART OK 26 54 35 53 / 0 0 0 0
WICHITA FALLS TX 29 60 44 64 / 0 0 0 10
GAGE OK 19 51 27 47 / 0 0 0 0
PONCA CITY OK 24 47 33 49 / 0 0 10 10
DURANT OK 31 58 43 62 / 0 0 0 30

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

11/30
January 26, 2010 - 352 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
352 AM CST TUE JAN 26 2010

OKZ004>048-050>052-TXZ083>090-262200-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
352 AM CST TUE JAN 26 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT ACROSS OKLAHOMA AND WESTERN NORTH
TEXAS.

* A STRONG WINTER STORM WILL TAKE AIM ON THE SOUTHERN PLAINS
THURSDAY INTO FRIDAY. COLD AIR CURRENTLY IN PLACE OVER WESTERN
CANADA WILL MOVE OVER THE REGION LATE WEDNESDAY BEHIND A
STRONG COLD FRONT. A STRONG STORM SYSTEM WILL THEN APPROACH
FROM THE WEST EARLY THURSDAY...RESULTING IN A VARIETY OF
WINTER WEATHER.

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN MAY BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATIONS APPEARS TO BE
ACROSS PORTIONS OF CENTRAL AND SOUTHERN OKLAHOMA AND PARTS OF
WESTERN NORTH TEXAS. SLEET AND SNOW ACCUMULATIONS APPEAR MORE
LIKELY ACROSS CENTRAL AND NORTHERN OKLAHOMA ALTHOUGH SOME
FREEZING RAIN WILL ALSO BE POSSIBLE ACROSS NORTHERN OKLAHOMA.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 20 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AN DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 26, 2010 - 500 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST TUE JAN 26 2010

OKZ004>048-050>052-TXZ083>090-261800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CST TUE JAN 26 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.

DISCUSSION...
A DRY AND STABLE AIRMASS WILL REMAIN IN PLACE THROUGH TONIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY JAN 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...0 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
IT APPEARS LIKELY A WINTRY MIX OF PRECIPITATION WILL SPREAD ACROSS
OKLAHOMA AND WESTERN NORTH TEXAS FROM LATE WEDNESDAY NIGHT THROUGH
EARLY FRIDAY. SIGNIFICANT ACCUMULATIONS OF SNOW AND ICE ARE LIKELY
AND A WINTER STORM WATCH HAS BEEN ISSUED FOR MUCH OF THE AREA.
PLEASE REFER TO THE WINTER STORM WATCH STATEMENT FOR FURTHER DETAILS
AND THIS DEVELOPING STORM.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT
NOON TODAY.

$$
January 26, 2010 - 1109 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1109 AM CST TUE JAN 26 2010

.DISCUSSION...
TEMPERATURES AND THE GRADUALLY VEERING OF THE LIGHT WINDS
ARE FORECAST AS OBSERVED AND EXPECTED. NO CHANGES ARE NEEDED AT
THE MOMENT.

.AVIATION...
LIGHT WIND AND VFR CONDITIONS ARE EXPECTED THROUGH 271200 AFTER
WHICH MVFR CEILINGS ARE EXPECTED IN AREAS NEAR AND EAST OF LAWTON,
OKLAHOMA CITY, AND STILLWATER.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 48 37 52 34 / 0 0 10 60
HOBART OK 51 38 58 33 / 0 0 0 60
WICHITA FALLS TX 54 42 60 42 / 0 0 10 70
GAGE OK 53 30 50 24 / 0 0 0 50
PONCA CITY OK 47 34 49 27 / 0 10 10 60
DURANT OK 54 42 53 43 / 0 0 30 60

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

09/06/06
January 26, 2010 - 1200 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CST TUE JAN 26 2010

OKZ004>048-050>052-TXZ083>090-271200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1200 PM CST TUE JAN 26 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.

DISCUSSION...
A DRY AND STABLE AIRMASS WILL REMAIN IN PLACE THROUGH TONIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY JAN 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...0 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL TAKE SHAPE OVER THE SOUTHERN PLAINS BEGINNING
LATE WEDNESDAY. THIS STORM COULD PRODUCE SOME THUNDER AS IT
INTENSIFIES BETWEEN WEDNESDAY NIGHT AND THURSDAY NIGHT. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
UP TO A FOOT OF SNOW IS EXPECTED IN WEST CENTRAL AND NORTH CENTRAL
OKLAHOMA BETWEEN SUNRISE THURSDAY AND FRIDAY MORNING. SNOW AND SLEET
ACCUMULATING TO 6 INCHES WITH 1/4 INCH OF ICE IS EXPECTED FROM
SOUTHWEST TO CENTRAL OKLAHOMA. LESS SNOW BUT MORE ICE IS LIKELY IN
SOUTH CENTRAL OKLAHOMA. IN SHORT...ICE ACCUMULATIONS IN WESTERN NORTH
TEXAS AND MUCH OF OKLAHOMA SOUTH OF I-44 IS EXPECTED TO CAUSE
SIGNIFICANT GLAZING ON EXPOSED SURFACES. GUSTY NORTH WIND WILL CAUSE
BLOWING SNOW IN WEST CENTRAL AND NORTH CENTRAL OKLAHOMA.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
WEDNESDAY.

$$
January 26, 2010 - 132 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
132 PM CST TUE JAN 26 2010

OKZ004>048-050>052-TXZ083>090-271930-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
132 PM CST TUE JAN 26 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

* A STRONG WINTER STORM WILL TAKE AIM ON THE SOUTHERN PLAINS
THURSDAY INTO FRIDAY. COLD AIR CURRENTLY IN PLACE OVER WESTERN
CANADA WILL MOVE OVER THE REGION LATE WEDNESDAY BEHIND A STRONG
COLD FRONT. A STRONG STORM SYSTEM WILL THEN APPROACH FROM THE
WEST EARLY THURSDAY CAUSING A VARIETY OF WINTER WEATHER.

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OR
STILLWATER...EL RENO...HOBART...ALTUS...AND QUANAH. IN
PARTICULAR...AREAS SOUTH OF SEMINOLE...PAULS
VALLEY...WALTERS...AND SEYMOUR MAY SEE 1/4 TO 3/4 INCH OF ICE
ACCUMULATION. SLEET AND SNOW WILL ALSO OCCUR. FARTHER NORTH...GREATER
SLEET AND SNOW ACCUMULATION WILL OCCUR FROM WEST CENTRAL TO
NORTH CENTRAL OKLAHOMA WHERE 6 TO 12 INCHES OF SNOW IS EXPECTED.


* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&
January 26, 2010 - 342 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
342 PM CST TUE JAN 26 2010

.DISCUSSION...
UPPER LOW THAT WILL BRING A VARIETY OF WINTER WEATHER IS
LOCATED SEVERAL HUNDRED MILES OFF THE SOUTHERN CALIFORNIA COAST
LATE THIS AFTERNOON. TONIGHT...HIGH CLOUDS WILL THICKEN ACROSS
THE FA WITHIN A WEST TO SOUTHWEST FLOW... WHILE LOW CLOUDS ACROSS
SOUTH TEXAS LIFT NORTH OVERNIGHT. ON WEDNESDAY...INITIAL SURGE OF
MUCH COLDER AIR WILL ENTER FAR NORTHWEST OKLAHOMA AROUND NOON.
BREEZY SOUTHWEST WINDS AHEAD OF THE FRONT WILL PROVIDE RATHER WARM
CONDITIONS ACROSS A LARGE PART OF THE FA.

COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD WEDNESDAY NIGHT AND
SHOULD BE SOUTH OF MOST AREAS BY EARLY THURSDAY MORNING. RAIN
SHOWERS WILL LIKELY DEVELOP NEAR FRONTAL ZONE DURING THE
OVERNIGHT PERIOD ACROSS SOUTHERN OKLAHOMA...WESTERN NORTH TEXAS.

PRECIPITATION WILL BECOME WIDESPREAD DURING THE DAY THURSDAY AS UPPER
LOW MOVES NORTHEAST. SIGNIFICANT PRECIPITATION AMOUNTS APPEAR LIKELY
FOR A LARGE PART OF FA. STILL A CHALLENGING (PRECIP-TYPE) FORECAST
BUT MAINLY USED THE 12Z NAM THERMAL STRUCTURE FOR (TYPE--- CHANGE
OVER) WITH COLDER GFS SURFACE NUMBERS.

AREAS NORTH AND WEST OF HOBART...EL RENO...STILLWATER WILL HAVE
BEST CHANCE OF ACCUMULATING SNOW WITH SLEET. AREAS SOUTH AND EAST
OF SEMINOLE...DUNCAN...AND WICHITA FALLS WILL HAVE BEST
OPPORTUNITY OF HIGHER ICE ACCUMULATIONS. FAR SOUTHEAST OKLAHOMA
MAY SEE MAINLY A COLD RAIN WITH SOME SLEET AND SNOW AS PRECIP
ENDS.

AFTER FRIDAY...TEMPERATURES WILL REMAIN VERY COLD INTO SUNDAY WITH
NO ADDITIONAL PRECIP. ANOTHER SHORTWAVE WILL BRING A CHANCE OF MAINLY
LIGHT RAIN TO EASTERN PARTS OF FA ON MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 37 55 32 34 / 0 10 60 80
HOBART OK 38 58 32 34 / 0 0 60 80
WICHITA FALLS TX 42 62 43 43 / 0 10 70 80
GAGE OK 30 57 24 25 / 0 0 50 70
PONCA CITY OK 34 52 26 27 / 10 10 60 70
DURANT OK 42 59 46 47 / 0 30 60 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$
January 26, 2010 - 515 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
515 PM CST TUE JAN 26 2010

.AVIATION...
MID AND HIGH CLOUDS WILL CONT TO STREAM ACROSS THE AREA OVERNIGHT.
GULF STRATUS WILL MAKE A RUN AT PARTS OF THE AREA LATE TONIGHT...
AFFECTING SITES FROM SOUTHWEST THROUGH CENTRAL SECTIONS WITH MVFR
CEILINGS THAT MAY LINGER THROUGH THE MORNING BEFORE VEERING LOW
LEVEL WINDS AND SFC HEATING AHEAD OF COLD FRONT BREAK CLOUD DECK UP
DURING AFTN. WILL SEE SFC FRONT MAKE ITS WAY INTO NORTHWEST OK BY
LATE MORNING AND NEAR A PNC TO HBR LINE BY END OF FORECAST PERIOD.

30

&&

.PREV DISCUSSION... /ISSUED 342 PM CST TUE JAN 26 2010/

.DISCUSSION...
UPPER LOW THAT WILL BRING A VARIETY OF WINTER WEATHER IS
LOCATED SEVERAL HUNDRED MILES OFF THE SOUTHERN CALIFORNIA COAST
LATE THIS AFTERNOON. TONIGHT...HIGH CLOUDS WILL THICKEN ACROSS
THE FA WITHIN A WEST TO SOUTHWEST FLOW... WHILE LOW CLOUDS ACROSS
SOUTH TEXAS LIFT NORTH OVERNIGHT. ON WEDNESDAY...INITIAL SURGE OF
MUCH COLDER AIR WILL ENTER FAR NORTHWEST OKLAHOMA AROUND NOON.
BREEZY SOUTHWEST WINDS AHEAD OF THE FRONT WILL PROVIDE RATHER WARM
CONDITIONS ACROSS A LARGE PART OF THE FA.

COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD WEDNESDAY NIGHT AND
SHOULD BE SOUTH OF MOST AREAS BY EARLY THURSDAY MORNING. RAIN
SHOWERS WILL LIKELY DEVELOP NEAR FRONTAL ZONE DURING THE
OVERNIGHT PERIOD ACROSS SOUTHERN OKLAHOMA...WESTERN NORTH TEXAS.

PRECIPITATION WILL BECOME WIDESPREAD DURING THE DAY THURSDAY AS UPPER
LOW MOVES NORTHEAST. SIGNIFICANT PRECIPITATION AMOUNTS APPEAR LIKELY
FOR A LARGE PART OF FA. STILL A CHALLENGING (PRECIP-TYPE) FORECAST
BUT MAINLY USED THE 12Z NAM THERMAL STRUCTURE FOR (TYPE--- CHANGE
OVER) WITH COLDER GFS SURFACE NUMBERS.

AREAS NORTH AND WEST OF HOBART...EL RENO...STILLWATER WILL HAVE
BEST CHANCE OF ACCUMULATING SNOW WITH SLEET. AREAS SOUTH AND EAST
OF SEMINOLE...DUNCAN...AND WICHITA FALLS WILL HAVE BEST
OPPORTUNITY OF HIGHER ICE ACCUMULATIONS. FAR SOUTHEAST OKLAHOMA
MAY SEE MAINLY A COLD RAIN WITH SOME SLEET AND SNOW AS PRECIP
ENDS.

AFTER FRIDAY...TEMPERATURES WILL REMAIN VERY COLD INTO SUNDAY WITH
NO ADDITIONAL PRECIP. ANOTHER SHORTWAVE WILL BRING A CHANCE OF MAINLY
LIGHT RAIN TO EASTERN PARTS OF FA ON MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 37 55 32 34 / 0 10 60 80
HOBART OK 38 58 32 34 / 0 0 60 80
WICHITA FALLS TX 42 62 43 43 / 0 10 70 80
GAGE OK 30 57 24 25 / 0 0 50 70
PONCA CITY OK 34 52 26 27 / 10 10 60 70
DURANT OK 42 59 46 47 / 0 30 60 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

09/06
January 26, 2010 - 1021 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1021 PM CST TUE JAN 26 2010

.UPDATE...
LOWERED TEMPERATURES A BIT MORE FOR TONIGHT ACROSS THE CENTRAL
AND SOUTHEAST PART OF THE AREA AS TEMPERATURES WERE NEARING
FORECAST LOWS. MEANWHILE... A QUICK LOOK AT THE 00Z NAM AND GFS
RUNS INDICATE THAT EACH IS STICKING TO ITS GUNS CONCERNING THE
EVER-CRITICAL TEMPERATURE PROFILE ABOVE THE BOUNDARY LAYER. THE
NAM BRINGS THE 850 MB 0C LINE INTO THE OKC AREA BY THURSDAY
EVENING... WHILE THE GFS HAS IT A FEW COUNTIES FARTHER SOUTH BY
THAT TIME. THE NAM'S SOLUTION PAINTS MORE ICE FOR THE OKC AREA...
WHILE THE GFS INDICATES A MORE RAPID CHANGE-OVER TO SNOW.
MEANWHILE... THE STRONG 850 SOUTHERLY FLOW WILL DELIVER A
CONSIDERABLE AMOUNT OF MOISTURE TO THE SYSTEM... WHICH WILL LIKELY
TRANSLATE TO QUITE HEAVY SNOW ACCUMULATIONS IN LOCATIONS WHERE THE
TRANSITION TO SNOW OCCURS MORE QUICKLY. SEE LITTLE TO CHANGE IN
CURRENT FORECAST DISTRIBUTION OF ICE/SNOW ACCUMULATIONS UNTIL THE
CONFIDENCE LEVEL CONCERNING THE TIMING OF TRANSITION OF
PRECIPITATION TYPES IMPROVES.

&&

.PREV DISCUSSION... /ISSUED 515 PM CST TUE JAN 26 2010/

AVIATION...
MID AND HIGH CLOUDS WILL CONT TO STREAM ACROSS THE AREA OVERNIGHT.
GULF STRATUS WILL MAKE A RUN AT PARTS OF THE AREA LATE TONIGHT...
AFFECTING SITES FROM SOUTHWEST THROUGH CENTRAL SECTIONS WITH MVFR
CEILINGS THAT MAY LINGER THROUGH THE MORNING BEFORE VEERING LOW
LEVEL WINDS AND SFC HEATING AHEAD OF COLD FRONT BREAK CLOUD DECK UP
DURING AFTN. WILL SEE SFC FRONT MAKE ITS WAY INTO NORTHWEST OK BY
LATE MORNING AND NEAR A PNC TO HBR LINE BY END OF FORECAST PERIOD.

30

PREV DISCUSSION... /ISSUED 342 PM CST TUE JAN 26 2010/

DISCUSSION...
UPPER LOW THAT WILL BRING A VARIETY OF WINTER WEATHER IS
LOCATED SEVERAL HUNDRED MILES OFF THE SOUTHERN CALIFORNIA COAST
LATE THIS AFTERNOON. TONIGHT...HIGH CLOUDS WILL THICKEN ACROSS
THE FA WITHIN A WEST TO SOUTHWEST FLOW... WHILE LOW CLOUDS ACROSS
SOUTH TEXAS LIFT NORTH OVERNIGHT. ON WEDNESDAY...INITIAL SURGE OF
MUCH COLDER AIR WILL ENTER FAR NORTHWEST OKLAHOMA AROUND NOON.
BREEZY SOUTHWEST WINDS AHEAD OF THE FRONT WILL PROVIDE RATHER WARM
CONDITIONS ACROSS A LARGE PART OF THE FA.

COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD WEDNESDAY NIGHT AND
SHOULD BE SOUTH OF MOST AREAS BY EARLY THURSDAY MORNING. RAIN
SHOWERS WILL LIKELY DEVELOP NEAR FRONTAL ZONE DURING THE
OVERNIGHT PERIOD ACROSS SOUTHERN OKLAHOMA...WESTERN NORTH TEXAS.

PRECIPITATION WILL BECOME WIDESPREAD DURING THE DAY THURSDAY AS UPPER
LOW MOVES NORTHEAST. SIGNIFICANT PRECIPITATION AMOUNTS APPEAR LIKELY
FOR A LARGE PART OF FA. STILL A CHALLENGING (PRECIP-TYPE) FORECAST
BUT MAINLY USED THE 12Z NAM THERMAL STRUCTURE FOR (TYPE--- CHANGE
OVER) WITH COLDER GFS SURFACE NUMBERS.

AREAS NORTH AND WEST OF HOBART...EL RENO...STILLWATER WILL HAVE
BEST CHANCE OF ACCUMULATING SNOW WITH SLEET. AREAS SOUTH AND EAST
OF SEMINOLE...DUNCAN...AND WICHITA FALLS WILL HAVE BEST
OPPORTUNITY OF HIGHER ICE ACCUMULATIONS. FAR SOUTHEAST OKLAHOMA
MAY SEE MAINLY A COLD RAIN WITH SOME SLEET AND SNOW AS PRECIP
ENDS.

AFTER FRIDAY...TEMPERATURES WILL REMAIN VERY COLD INTO SUNDAY WITH
NO ADDITIONAL PRECIP. ANOTHER SHORTWAVE WILL BRING A CHANCE OF MAINLY
LIGHT RAIN TO EASTERN PARTS OF FA ON MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 37 55 32 34 / 0 10 60 80
HOBART OK 38 58 32 34 / 0 0 60 80
WICHITA FALLS TX 42 62 43 43 / 0 10 70 80
GAGE OK 30 57 24 25 / 0 0 50 70
PONCA CITY OK 34 52 26 27 / 10 10 60 70
DURANT OK 39 59 46 47 / 0 30 60 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

32/06
January 26, 2010 - 1100 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1100 PM CST TUE JAN 26 2010

.AVIATION...
STRATUS DECK WILL MAKE A RUN UP THROUGH WESTERN NORTH TEXAS INTO
SOUTHWEST AND CENTRAL OK TOWARD SUNRISE AND PERHAPS AS FAR NORTH AS
PNC. WILL KEEP MVFR CEILINGS THROUGH THE DAY ALONG THE I-44 CORRIDOR
AS MOISTURE POOLS IN THIS REGION AHEAD OF COLD FRONT. FRONT WILL
ENTER NORTHWEST OK LATE MORNING AND SHOULD BE NEAR OR JUST SOUTH OF
RED RIVER BY END OF FORECAST PERIOD.

30

&&

.PREV DISCUSSION... /ISSUED 1021 PM CST TUE JAN 26 2010/

.UPDATE...
LOWERED TEMPERATURES A BIT MORE FOR TONIGHT ACROSS THE CENTRAL
AND SOUTHEAST PART OF THE AREA AS TEMPERATURES WERE NEARING
FORECAST LOWS. MEANWHILE... A QUICK LOOK AT THE 00Z NAM AND GFS
RUNS INDICATE THAT EACH IS STICKING TO ITS GUNS CONCERNING THE
EVER-CRITICAL TEMPERATURE PROFILE ABOVE THE BOUNDARY LAYER. THE
NAM BRINGS THE 850 MB 0C LINE INTO THE OKC AREA BY THURSDAY
EVENING... WHILE THE GFS HAS IT A FEW COUNTIES FARTHER SOUTH BY
THAT TIME. THE NAM'S SOLUTION PAINTS MORE ICE FOR THE OKC AREA...
WHILE THE GFS INDICATES A MORE RAPID CHANGE-OVER TO SNOW.
MEANWHILE... THE STRONG 850 SOUTHERLY FLOW WILL DELIVER A
CONSIDERABLE AMOUNT OF MOISTURE TO THE SYSTEM... WHICH WILL LIKELY
TRANSLATE TO QUITE HEAVY SNOW ACCUMULATIONS IN LOCATIONS WHERE THE
TRANSITION TO SNOW OCCURS MORE QUICKLY. SEE LITTLE TO CHANGE IN
CURRENT FORECAST DISTRIBUTION OF ICE/SNOW ACCUMULATIONS UNTIL THE
CONFIDENCE LEVEL CONCERNING THE TIMING OF TRANSITION OF
PRECIPITATION TYPES IMPROVES.

&&

.PREV DISCUSSION... /ISSUED 515 PM CST TUE JAN 26 2010/

AVIATION...
MID AND HIGH CLOUDS WILL CONT TO STREAM ACROSS THE AREA OVERNIGHT.
GULF STRATUS WILL MAKE A RUN AT PARTS OF THE AREA LATE TONIGHT...
AFFECTING SITES FROM SOUTHWEST THROUGH CENTRAL SECTIONS WITH MVFR
CEILINGS THAT MAY LINGER THROUGH THE MORNING BEFORE VEERING LOW
LEVEL WINDS AND SFC HEATING AHEAD OF COLD FRONT BREAK CLOUD DECK UP
DURING AFTN. WILL SEE SFC FRONT MAKE ITS WAY INTO NORTHWEST OK BY
LATE MORNING AND NEAR A PNC TO HBR LINE BY END OF FORECAST PERIOD.

30

PREV DISCUSSION... /ISSUED 342 PM CST TUE JAN 26 2010/

DISCUSSION...
UPPER LOW THAT WILL BRING A VARIETY OF WINTER WEATHER IS
LOCATED SEVERAL HUNDRED MILES OFF THE SOUTHERN CALIFORNIA COAST
LATE THIS AFTERNOON. TONIGHT...HIGH CLOUDS WILL THICKEN ACROSS
THE FA WITHIN A WEST TO SOUTHWEST FLOW... WHILE LOW CLOUDS ACROSS
SOUTH TEXAS LIFT NORTH OVERNIGHT. ON WEDNESDAY...INITIAL SURGE OF
MUCH COLDER AIR WILL ENTER FAR NORTHWEST OKLAHOMA AROUND NOON.
BREEZY SOUTHWEST WINDS AHEAD OF THE FRONT WILL PROVIDE RATHER WARM
CONDITIONS ACROSS A LARGE PART OF THE FA.

COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD WEDNESDAY NIGHT AND
SHOULD BE SOUTH OF MOST AREAS BY EARLY THURSDAY MORNING. RAIN
SHOWERS WILL LIKELY DEVELOP NEAR FRONTAL ZONE DURING THE
OVERNIGHT PERIOD ACROSS SOUTHERN OKLAHOMA...WESTERN NORTH TEXAS.

PRECIPITATION WILL BECOME WIDESPREAD DURING THE DAY THURSDAY AS UPPER
LOW MOVES NORTHEAST. SIGNIFICANT PRECIPITATION AMOUNTS APPEAR LIKELY
FOR A LARGE PART OF FA. STILL A CHALLENGING (PRECIP-TYPE) FORECAST
BUT MAINLY USED THE 12Z NAM THERMAL STRUCTURE FOR (TYPE--- CHANGE
OVER) WITH COLDER GFS SURFACE NUMBERS.

AREAS NORTH AND WEST OF HOBART...EL RENO...STILLWATER WILL HAVE
BEST CHANCE OF ACCUMULATING SNOW WITH SLEET. AREAS SOUTH AND EAST
OF SEMINOLE...DUNCAN...AND WICHITA FALLS WILL HAVE BEST
OPPORTUNITY OF HIGHER ICE ACCUMULATIONS. FAR SOUTHEAST OKLAHOMA
MAY SEE MAINLY A COLD RAIN WITH SOME SLEET AND SNOW AS PRECIP
ENDS.

AFTER FRIDAY...TEMPERATURES WILL REMAIN VERY COLD INTO SUNDAY WITH
NO ADDITIONAL PRECIP. ANOTHER SHORTWAVE WILL BRING A CHANCE OF
MAINLY LIGHT RAIN TO EASTERN PARTS OF FA ON MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 37 55 32 34 / 0 10 60 80
HOBART OK 38 58 32 34 / 0 0 60 80
WICHITA FALLS TX 42 62 43 43 / 0 10 70 80
GAGE OK 30 57 24 25 / 0 0 50 70
PONCA CITY OK 34 52 26 27 / 10 10 60 70
DURANT OK 39 59 46 47 / 0 30 60 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ004>048-050>052.

TX...WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ083>090.

&&

$$

32/06

$$
January 27, 2010 - 350 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
350 AM CST WED JAN 27 2010

OKZ004>031-033>038-TXZ083>085-272200-
/O.UPG.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
/O.NEW.KOUN.WS.W.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
350 AM CST WED JAN 27 2010

...WINTER STORM WARNING IN EFFECT FROM 6 AM THURSDAY TO 6 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR ICE... SLEET... AND SNOW... WHICH IS IN EFFECT FROM 6
AM THURSDAY TO 6 AM CST FRIDAY.

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OF
STILLWATER... EL RENO...HOBART...ALTUS...AND QUANAH WHERE 1/4 TO
1/2 INCH OF ICE ACCUMULATION IS LIKELY. SLEET AND SNOW WILL ALSO
OCCUR. FARTHER NORTH... GREATER SLEET AND SNOW ACCUMULATION ARE
LIKELY FROM WEST CENTRAL TO NORTH CENTRAL OKLAHOMA WHERE 6 TO
12 INCHES OF SNOW IS EXPECTED.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE.
THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$
January 27, 2010 - 332 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
332 AM CST WED JAN 27 2010

.DISCUSSION...
MAIN FOCUS IS ON THE APPROACHING WINTER STORM. HIGH TEMPERATURES
EXPECTED TO BE WELL ABOVE NORMAL TODAY IN MANY LOCATIONS DESPITE
SOME LOW CLOUDS ACROSS PORTIONS OF THE FA. COLD FRONT WILL MOVE INTO
NW PORTIONS OF FA LATER THIS AFTERNOON. THE FRONT WILL CONT TO MOVE
SOUTH ACROSS THE FA TONIGHT EVENTUALLY BRINGING COLD AIR TO THE
REGION. UPR SYSTEM WILL ALSO APPROACH AND MOVE ACROSS THE SOUTHERN
PLAINS TONIGHT THROUGH FRIDAY. AHEAD OF THIS SYSTEM...WARM MOIST
AIR ABOVE THE SFC WILL MOVE NORTHWARD INTO PORTIONS OF THE FA
WHICH WILL LEAD TO MORE OF A WINTRY MIX OF PRECIP THAN A QUICK
CHANGE OVER TO SNOW. SOME LIGHT RAIN WILL BE POSSIBLE TODAY IN SE
AND CENTRAL PORTIONS OF THE FA DUE TO WAA. MORE WIDESPREAD RAIN
AND POSSIBLY THUNDER WILL DEVELOP TONIGHT AS THE UPPER SYSTEM
APPROACHES. SOME OF THE RAIN MAY CHANGE OVER TO ZR/IP/SN LATE
TONIGHT/EARLY THU MORNING ACROSS NORTHWESTERN PORTIONS OF THE FA
AS COLDER AIR BEGINS TO MAKE ITS WAY INTO THE REGION. HOWEVER...
THE BULK OF THE WINTER PRECIP IS EXPECTED TO OCCUR THU INTO FRI.
RAIN WILL CONT TO CHANGE OVER TO FREEZING RAIN... SLEET... AND/OR
SNOW FROM NORTHWEST TO SOUTHEAST ACROSS THE FA AS THE DAY
PROGRESSES... WITH MOST OF THE CWA RECEIVING SNOW THU NIGHT. THE
PRECIP WILL GRADUALLY END FROM WEST TO EAST FRIDAY AS THE UPPER
SYSTEM BEGINS TO MOVE AWAY FROM THE AREA. SIGNIFICANT SNOW...
SLEET... AND ICE ACCUMULATIONS WILL BE POSSIBLE ACROSS MUCH OF THE
FA. HOWEVER... THERE CONTINUES TO BE SOME UNCERTAINTIES AS TO WHEN
THE CHANGES OF PRECIP TYPE WILL OCCUR WHICH WILL AFFECT
ACCUMULATIONS OF EACH... BUT WITH SIGNIFICANT ACCUMULATIONS OF
SOME SORT OF WINTER PRECIP LIKELY ACROSS PORTIONS OF THE FA WILL
UPGRADE PARTS OF THE WINTER STORM WATCH TO A WINTER STORM WARNING.
THE REST OF THE AREA WILL REMAIN UNDER A WINTER STORM WATCH AS
STILL SOME QUESTIONS HOW MUCH AND OF WHAT KIND OF PRECIP THESE
AREAS WILL RECEIVE.

IN ADDITION TO THE WINTER PRECIP... WINDS WILL BE BREEZY/STRONG THU
INTO THU EVENING WHICH MAY CAUSE BLOWING AND DRIFTING OF THE SNOW.
TEMPERATURES ARE ALSO EXPECTED TO FALL THU AFTN. TEMPS WILL REMAIN
COLD INTO AT LEAST THE FIRST PART OF THE WEEKEND... WITH A GRADUAL
WARM UP BACK TO AROUND AVERAGE EARLY NEXT WEEK. ANOTHER ROUND OF
PRECIPITATION WILL BE POSSIBLE EARLY NEXT WEEK WITH THE NEXT STORM
SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 56 33 34 20 / 10 60 100 80
HOBART OK 59 33 33 18 / 0 60 100 80
WICHITA FALLS TX 61 43 43 24 / 10 70 100 80
GAGE OK 56 24 25 10 / 0 30 100 70
PONCA CITY OK 54 26 27 12 / 10 40 100 70
DURANT OK 57 46 47 29 / 20 60 100 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

02/25

OKZ032-039>048-050>052-TXZ086>090-272200-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-WICHITA-KNOX-BAYLOR-
ARCHER-CLAY-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WALTERS...WAURIKA...ARDMORE...
TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
350 AM CST WED JAN 27 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT ACROSS PORTIONS OF SOUTHERN OKLAHOMA
AND WESTERN NORTH TEXAS.

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM EARLY THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS AREAS SOUTH OF
SEMINOLE...PAULS VALLEY... WALTERS... AND SEYMOUR WHERE 1/4 TO
3/4 INCH OF ICE ACCUMULATION IS POSSIBLE. SLEET AND SNOW MAY
ALSO OCCUR WITH ACCUMULATIONS OF UP TO 3 INCHES OF SNOW AND
SLEET POSSIBLE.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 27, 2010 - 500 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST WED JAN 27 2010

OKZ004>048-050>052-TXZ083>090-271800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CST WED JAN 27 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS ARE POSSIBLE IN WESTERN NORTH TEXAS LATE
TONIGHT. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
MOISTURE WILL BEGIN TO RETURN NORTHWARD THROUGH THE SOUTHERN PLAINS
AS SOUTHERLY WINDS INCREASE IN RESPONSE TO STRENGTHENING LOW
PRESSURE IN SOUTHEAST COLORADO. SHOWERS AND A FEW THUNDERSTORMS MAY
DEVELOP OVER PARTS OF WESTERN NORTH TEXAS LATE TONIGHT AS AN UPPER
LEVEL STORM SYSTEM APPROACHES FROM THE SOUTHWEST.
HOWEVER...INSTABILITY WILL BE LIMITED AND NO SEVERE STORMS ARE
EXPECTED.


PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY JAN 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...20 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE IN SOUTHERN OKLAHOMA AND
WESTERN NORTH TEXAS AS A STRONG STORM SYSTEM MOVES FROM THE SOUTHERN
ROCKIES INTO THE SOUTHERN PLAINS. SEVERE THUNDERSTORMS ARE NOT
EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
UP TO A FOOT OF SNOW IS EXPECTED IN WEST CENTRAL AND NORTH CENTRAL
OKLAHOMA BETWEEN SUNRISE THURSDAY AND FRIDAY MORNING. SNOW AND SLEET
ACCUMULATING TO 6 INCHES WITH 1/4 TO 1/2 INCH OF ICE IS EXPECTED
FROM SOUTHWEST TO CENTRAL OKLAHOMA. LESS SNOW BUT MORE ICE IS LIKELY
IN SOUTH CENTRAL OKLAHOMA. IN SHORT...ICE ACCUMULATIONS IN WESTERN
NORTH TEXAS AND MUCH OF OKLAHOMA SOUTH OF I-44 IS EXPECTED TO CAUSE
SIGNIFICANT GLAZING ON EXPOSED SURFACES. GUSTY NORTH WIND WILL CAUSE
BLOWING SNOW IN WEST CENTRAL AND NORTH CENTRAL OKLAHOMA.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON
TODAY.

$$
January 27, 2010 - 514 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
514 AM CST WED JAN 27 2010

.AVIATION...
12Z TAFS... THERE ARE SOME UNCERTAINTIES AS TO WHEN RAIN WILL
TRANSITION TO FROZEN PRECIPITATION FOR EARLY THU MORNING FROM KOKC
AND KCSM TO KPNC AND KGAG. THUNDERSTORMS WILL ALSO BE POSSIBLE
ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS TONIGHT BUT
CHANCES ARE TOO LOW FOR MENTION IN TAFS.

&&

.PREV DISCUSSION... /ISSUED 332 AM CST WED JAN 27 2010/

DISCUSSION...
MAIN FOCUS IS ON THE APPROACHING WINTER STORM. HIGH TEMPERATURES
EXPECTED TO BE WELL ABOVE NORMAL TODAY IN MANY LOCATIONS DESPITE
SOME LOW CLOUDS ACROSS PORTIONS OF THE FA. COLD FRONT WILL MOVE INTO
NW PORTIONS OF FA LATER THIS AFTERNOON. THE FRONT WILL CONT TO MOVE
SOUTH ACROSS THE FA TONIGHT EVENTUALLY BRINGING COLD AIR TO THE
REGION. UPR SYSTEM WILL ALSO APPROACH AND MOVE ACROSS THE SOUTHERN
PLAINS TONIGHT THROUGH FRIDAY. AHEAD OF THIS SYSTEM...WARM MOIST
AIR ABOVE THE SFC WILL MOVE NORTHWARD INTO PORTIONS OF THE FA
WHICH WILL LEAD TO MORE OF A WINTRY MIX OF PRECIP THAN A QUICK
CHANGE OVER TO SNOW. SOME LIGHT RAIN WILL BE POSSIBLE TODAY IN SE
AND CENTRAL PORTIONS OF THE FA DUE TO WAA. MORE WIDESPREAD RAIN
AND POSSIBLY THUNDER WILL DEVELOP TONIGHT AS THE UPPER SYSTEM
APPROACHES. SOME OF THE RAIN MAY CHANGE OVER TO ZR/IP/SN LATE
TONIGHT/EARLY THU MORNING ACROSS NORTHWESTERN PORTIONS OF THE FA
AS COLDER AIR BEGINS TO MAKE ITS WAY INTO THE REGION. HOWEVER...
THE BULK OF THE WINTER PRECIP IS EXPECTED TO OCCUR THU INTO FRI.
RAIN WILL CONT TO CHANGE OVER TO FREEZING RAIN... SLEET... AND/OR
SNOW FROM NORTHWEST TO SOUTHEAST ACROSS THE FA AS THE DAY
PROGRESSES... WITH MOST OF THE CWA RECEIVING SNOW THU NIGHT. THE
PRECIP WILL GRADUALLY END FROM WEST TO EAST FRIDAY AS THE UPPER
SYSTEM BEGINS TO MOVE AWAY FROM THE AREA. SIGNIFICANT SNOW...
SLEET... AND ICE ACCUMULATIONS WILL BE POSSIBLE ACROSS MUCH OF THE
FA. HOWEVER... THERE CONTINUES TO BE SOME UNCERTAINTIES AS TO WHEN
THE CHANGES OF PRECIP TYPE WILL OCCUR WHICH WILL AFFECT
ACCUMULATIONS OF EACH... BUT WITH SIGNIFICANT ACCUMULATIONS OF
SOME SORT OF WINTER PRECIP LIKELY ACROSS PORTIONS OF THE FA WILL
UPGRADE PARTS OF THE WINTER STORM WATCH TO A WINTER STORM WARNING.
THE REST OF THE AREA WILL REMAIN UNDER A WINTER STORM WATCH AS
STILL SOME QUESTIONS HOW MUCH AND OF WHAT KIND OF PRECIP THESE
AREAS WILL RECEIVE.

IN ADDITION TO THE WINTER PRECIP... WINDS WILL BE BREEZY/STRONG THU
INTO THU EVENING WHICH MAY CAUSE BLOWING AND DRIFTING OF THE SNOW.
TEMPERATURES ARE ALSO EXPECTED TO FALL THU AFTN. TEMPS WILL REMAIN
COLD INTO AT LEAST THE FIRST PART OF THE WEEKEND... WITH A GRADUAL
WARM UP BACK TO AROUND AVERAGE EARLY NEXT WEEK. ANOTHER ROUND OF
PRECIPITATION WILL BE POSSIBLE EARLY NEXT WEEK WITH THE NEXT STORM
SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 56 33 34 20 / 10 60 100 80
HOBART OK 59 33 33 18 / 0 60 100 80
WICHITA FALLS TX 61 43 43 24 / 10 70 100 80
GAGE OK 56 24 25 10 / 0 30 100 70
PONCA CITY OK 54 26 27 12 / 10 40 100 70
DURANT OK 57 46 47 29 / 20 60 100 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

02/25/25
January 27, 2010 - 1022 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1022 AM CST WED JAN 27 2010

.UPDATE...
HAVE ADJUSTED SKY CONDITIONS AND MAX TEMPERATURES FOR TODAY WITH
THIS UPDATE. WIDESPREAD CLOUDINESS ACROSS SOUTHERN/EASTERN
SECTIONS WILL KEEP MAX TEMPERATURES SOMEWHAT LOWER... WHILE COOLER
AIR BEGINNING TO FILTER INTO NORTHWEST OKLAHOMA AND HAVE LOWERED
PROJECTED HIGHS THERE. IN BETWEEN... TEMPERATURES HAVE BEEN RAISED
IN AREAS WHERE THE CLOUDS HAVE MOVED OUT.

FOCUS THEN SHIFTS ON THE WINTER STORM TOMORROW/TOMORROW NIGHT. WE
HAVE NOT MADE ANY ADJUSTMENTS TO THE PACKAGE WITH THIS UPDATE AS
WE ARE STILL ANALYZING THE 12Z MODEL DATA. SMALL VARIATIONS IN
NEAR-SURFACE AND WARM-NOSE /850 MB OR SO/ TEMPERATURES WILL MAKE
SIGNIFICANT VARIATIONS IN PRECIPITATION TYPE /RAIN VS. FZRA VS.
SLEET VS. SNOW/ SO THIS WILL CONTINUE TO BE A COMPLEX FORECAST
WITH WIDE VARIATIONS OF PRECIPITATION TYPE AND ASSOCIATED IMPACTS
ACROSS THE FORECAST AREA.

&&

.PREV DISCUSSION... /ISSUED 514 AM CST WED JAN 27 2010/

AVIATION...
12Z TAFS... THERE ARE SOME UNCERTAINTIES AS TO WHEN RAIN WILL
TRANSITION TO FROZEN PRECIPITATION FOR EARLY THU MORNING FROM KOKC
AND KCSM TO KPNC AND KGAG. THUNDERSTORMS WILL ALSO BE POSSIBLE
ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS TONIGHT BUT
CHANCES ARE TOO LOW FOR MENTION IN TAFS.

PREV DISCUSSION... /ISSUED 332 AM CST WED JAN 27 2010/

DISCUSSION...
MAIN FOCUS IS ON THE APPROACHING WINTER STORM. HIGH TEMPERATURES
EXPECTED TO BE WELL ABOVE NORMAL TODAY IN MANY LOCATIONS DESPITE
SOME LOW CLOUDS ACROSS PORTIONS OF THE FA. COLD FRONT WILL MOVE INTO
NW PORTIONS OF FA LATER THIS AFTERNOON. THE FRONT WILL CONT TO MOVE
SOUTH ACROSS THE FA TONIGHT EVENTUALLY BRINGING COLD AIR TO THE
REGION. UPR SYSTEM WILL ALSO APPROACH AND MOVE ACROSS THE SOUTHERN
PLAINS TONIGHT THROUGH FRIDAY. AHEAD OF THIS SYSTEM...WARM MOIST
AIR ABOVE THE SFC WILL MOVE NORTHWARD INTO PORTIONS OF THE FA
WHICH WILL LEAD TO MORE OF A WINTRY MIX OF PRECIP THAN A QUICK
CHANGE OVER TO SNOW. SOME LIGHT RAIN WILL BE POSSIBLE TODAY IN SE
AND CENTRAL PORTIONS OF THE FA DUE TO WAA. MORE WIDESPREAD RAIN
AND POSSIBLY THUNDER WILL DEVELOP TONIGHT AS THE UPPER SYSTEM
APPROACHES. SOME OF THE RAIN MAY CHANGE OVER TO ZR/IP/SN LATE
TONIGHT/EARLY THU MORNING ACROSS NORTHWESTERN PORTIONS OF THE FA
AS COLDER AIR BEGINS TO MAKE ITS WAY INTO THE REGION. HOWEVER...
THE BULK OF THE WINTER PRECIP IS EXPECTED TO OCCUR THU INTO FRI.
RAIN WILL CONT TO CHANGE OVER TO FREEZING RAIN... SLEET... AND/OR
SNOW FROM NORTHWEST TO SOUTHEAST ACROSS THE FA AS THE DAY
PROGRESSES... WITH MOST OF THE CWA RECEIVING SNOW THU NIGHT. THE
PRECIP WILL GRADUALLY END FROM WEST TO EAST FRIDAY AS THE UPPER
SYSTEM BEGINS TO MOVE AWAY FROM THE AREA. SIGNIFICANT SNOW...
SLEET... AND ICE ACCUMULATIONS WILL BE POSSIBLE ACROSS MUCH OF THE
FA. HOWEVER... THERE CONTINUES TO BE SOME UNCERTAINTIES AS TO WHEN
THE CHANGES OF PRECIP TYPE WILL OCCUR WHICH WILL AFFECT
ACCUMULATIONS OF EACH... BUT WITH SIGNIFICANT ACCUMULATIONS OF
SOME SORT OF WINTER PRECIP LIKELY ACROSS PORTIONS OF THE FA WILL
UPGRADE PARTS OF THE WINTER STORM WATCH TO A WINTER STORM WARNING.
THE REST OF THE AREA WILL REMAIN UNDER A WINTER STORM WATCH AS
STILL SOME QUESTIONS HOW MUCH AND OF WHAT KIND OF PRECIP THESE
AREAS WILL RECEIVE.

IN ADDITION TO THE WINTER PRECIP... WINDS WILL BE BREEZY/STRONG THU
INTO THU EVENING WHICH MAY CAUSE BLOWING AND DRIFTING OF THE SNOW.
TEMPERATURES ARE ALSO EXPECTED TO FALL THU AFTN. TEMPS WILL REMAIN
COLD INTO AT LEAST THE FIRST PART OF THE WEEKEND... WITH A GRADUAL
WARM UP BACK TO AROUND AVERAGE EARLY NEXT WEEK. ANOTHER ROUND OF
PRECIPITATION WILL BE POSSIBLE EARLY NEXT WEEK WITH THE NEXT STORM
SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 58 33 34 20 / 10 60 100 80
HOBART OK 61 33 33 18 / 0 60 100 80
WICHITA FALLS TX 59 43 43 24 / 10 70 100 80
GAGE OK 50 24 25 10 / 0 30 100 70
PONCA CITY OK 55 26 27 12 / 10 40 100 70
DURANT OK 53 46 47 29 / 20 60 100 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$
January 27, 2010 - 1151 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1151 AM CST WED JAN 27 2010

.AVIATION...
A COLD FRONT WILL SHIFT WINDS TO NORTHEAST THIS AFTERNOON INTO
THIS EVENING AS IT MOVES SOUTHEAST ACROSS OKLAHOMA AND NORTH
TEXAS. COLD AIR BEHIND THE FRONT... COMBINED WITH VERY MOIST WARM
AIR ABOVE THE FRONT... WILL RESULT IN MIXED WINTRY PRECIPITATION.
THE EXACT TIMING OF THE BEGINNING OF RAIN... AND THE CHANGEOVER TO
FZRA... ARE STILL SOMEWHAT UNCLEAR... BUT SHOULD BE WITHIN A FEW
HOURS OF WHAT IS FORECAST. THE FZRA IS EXPECTED TO CHANGE TO PL
AND SN FROM NORTHEAST TO SOUTHEAST AFTER 18Z TOMORROW.

&&

.PREV DISCUSSION... /ISSUED 1022 AM CST WED JAN 27 2010/

UPDATE...
HAVE ADJUSTED SKY CONDITIONS AND MAX TEMPERATURES FOR TODAY WITH
THIS UPDATE. WIDESPREAD CLOUDINESS ACROSS SOUTHERN/EASTERN
SECTIONS WILL KEEP MAX TEMPERATURES SOMEWHAT LOWER... WHILE COOLER
AIR BEGINNING TO FILTER INTO NORTHWEST OKLAHOMA AND HAVE LOWERED
PROJECTED HIGHS THERE. IN BETWEEN... TEMPERATURES HAVE BEEN RAISED
IN AREAS WHERE THE CLOUDS HAVE MOVED OUT.

FOCUS THEN SHIFTS ON THE WINTER STORM TOMORROW/TOMORROW NIGHT. WE
HAVE NOT MADE ANY ADJUSTMENTS TO THE PACKAGE WITH THIS UPDATE AS
WE ARE STILL ANALYZING THE 12Z MODEL DATA. SMALL VARIATIONS IN
NEAR-SURFACE AND WARM-NOSE /850 MB OR SO/ TEMPERATURES WILL MAKE
SIGNIFICANT VARIATIONS IN PRECIPITATION TYPE /RAIN VS. FZRA VS.
SLEET VS. SNOW/ SO THIS WILL CONTINUE TO BE A COMPLEX FORECAST
WITH WIDE VARIATIONS OF PRECIPITATION TYPE AND ASSOCIATED IMPACTS
ACROSS THE FORECAST AREA.

PREV DISCUSSION... /ISSUED 514 AM CST WED JAN 27 2010/

AVIATION...
12Z TAFS... THERE ARE SOME UNCERTAINTIES AS TO WHEN RAIN WILL
TRANSITION TO FROZEN PRECIPITATION FOR EARLY THU MORNING FROM KOKC
AND KCSM TO KPNC AND KGAG. THUNDERSTORMS WILL ALSO BE POSSIBLE
ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS TONIGHT BUT
CHANCES ARE TOO LOW FOR MENTION IN TAFS.

PREV DISCUSSION... /ISSUED 332 AM CST WED JAN 27 2010/

DISCUSSION...
MAIN FOCUS IS ON THE APPROACHING WINTER STORM. HIGH TEMPERATURES
EXPECTED TO BE WELL ABOVE NORMAL TODAY IN MANY LOCATIONS DESPITE
SOME LOW CLOUDS ACROSS PORTIONS OF THE FA. COLD FRONT WILL MOVE INTO
NW PORTIONS OF FA LATER THIS AFTERNOON. THE FRONT WILL CONT TO MOVE
SOUTH ACROSS THE FA TONIGHT EVENTUALLY BRINGING COLD AIR TO THE
REGION. UPR SYSTEM WILL ALSO APPROACH AND MOVE ACROSS THE SOUTHERN
PLAINS TONIGHT THROUGH FRIDAY. AHEAD OF THIS SYSTEM...WARM MOIST
AIR ABOVE THE SFC WILL MOVE NORTHWARD INTO PORTIONS OF THE FA
WHICH WILL LEAD TO MORE OF A WINTRY MIX OF PRECIP THAN A QUICK
CHANGE OVER TO SNOW. SOME LIGHT RAIN WILL BE POSSIBLE TODAY IN SE
AND CENTRAL PORTIONS OF THE FA DUE TO WAA. MORE WIDESPREAD RAIN
AND POSSIBLY THUNDER WILL DEVELOP TONIGHT AS THE UPPER SYSTEM
APPROACHES. SOME OF THE RAIN MAY CHANGE OVER TO ZR/IP/SN LATE
TONIGHT/EARLY THU MORNING ACROSS NORTHWESTERN PORTIONS OF THE FA
AS COLDER AIR BEGINS TO MAKE ITS WAY INTO THE REGION. HOWEVER...
THE BULK OF THE WINTER PRECIP IS EXPECTED TO OCCUR THU INTO FRI.
RAIN WILL CONT TO CHANGE OVER TO FREEZING RAIN... SLEET... AND/OR
SNOW FROM NORTHWEST TO SOUTHEAST ACROSS THE FA AS THE DAY
PROGRESSES... WITH MOST OF THE CWA RECEIVING SNOW THU NIGHT. THE
PRECIP WILL GRADUALLY END FROM WEST TO EAST FRIDAY AS THE UPPER
SYSTEM BEGINS TO MOVE AWAY FROM THE AREA. SIGNIFICANT SNOW...
SLEET... AND ICE ACCUMULATIONS WILL BE POSSIBLE ACROSS MUCH OF THE
FA. HOWEVER... THERE CONTINUES TO BE SOME UNCERTAINTIES AS TO WHEN
THE CHANGES OF PRECIP TYPE WILL OCCUR WHICH WILL AFFECT
ACCUMULATIONS OF EACH... BUT WITH SIGNIFICANT ACCUMULATIONS OF
SOME SORT OF WINTER PRECIP LIKELY ACROSS PORTIONS OF THE FA WILL
UPGRADE PARTS OF THE WINTER STORM WATCH TO A WINTER STORM WARNING.
THE REST OF THE AREA WILL REMAIN UNDER A WINTER STORM WATCH AS
STILL SOME QUESTIONS HOW MUCH AND OF WHAT KIND OF PRECIP THESE
AREAS WILL RECEIVE.

IN ADDITION TO THE WINTER PRECIP... WINDS WILL BE BREEZY/STRONG THU
INTO THU EVENING WHICH MAY CAUSE BLOWING AND DRIFTING OF THE SNOW.
TEMPERATURES ARE ALSO EXPECTED TO FALL THU AFTN. TEMPS WILL REMAIN
COLD INTO AT LEAST THE FIRST PART OF THE WEEKEND... WITH A GRADUAL
WARM UP BACK TO AROUND AVERAGE EARLY NEXT WEEK. ANOTHER ROUND OF
PRECIPITATION WILL BE POSSIBLE EARLY NEXT WEEK WITH THE NEXT STORM
SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 58 33 34 20 / 10 60 100 80
HOBART OK 61 33 33 18 / 0 60 100 80
WICHITA FALLS TX 59 43 43 24 / 10 70 100 80
GAGE OK 50 24 25 10 / 0 30 100 70
PONCA CITY OK 55 26 27 12 / 10 40 100 70
DURANT OK 53 46 47 29 / 20 60 100 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

26/09/23
January 27, 2010 - 1225 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1225 PM CST WED JAN 27 2010

OKZ004>048-050>052-TXZ083>090-281200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1225 PM CST WED JAN 27 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS ARE POSSIBLE IN WESTERN NORTH TEXAS LATE
TONIGHT. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
MOISTURE WILL BEGIN TO RETURN NORTHWARD THROUGH THE SOUTHERN PLAINS
AS SOUTHERLY WINDS INCREASE IN RESPONSE TO STRENGTHENING LOW
PRESSURE IN SOUTHEAST COLORADO. SHOWERS AND A FEW THUNDERSTORMS MAY
DEVELOP OVER PARTS OF WESTERN NORTH TEXAS LATE TONIGHT AS AN UPPER
LEVEL STORM SYSTEM APPROACHES FROM THE SOUTHWEST. HOWEVER...
INSTABILITY WILL BE LIMITED AND NO SEVERE STORMS ARE EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY JAN 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...20 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE IN SOUTHERN OKLAHOMA AND
WESTERN NORTH TEXAS ON THURSDAY AS THE STRONG STORM SYSTEM MOVES
OVER THE SOUTHERN PLAINS. SEVERE THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
UP TO 10 INCHES OF SNOW IS EXPECTED IN WEST CENTRAL AND NORTH
CENTRAL OKLAHOMA BETWEEN SUNRISE THURSDAY AND FRIDAY MORNING. ICE
ACCUMULATION OF 1/4 TO 1/2 INCH OF ICE WILL BE POSSIBLE ACROSS
PORTIONS OF SOUTHWEST AND CENTRAL OKLAHOMA ALONG WITH SNOW AND SLEET
ACCUMULATION OF 2 TO 4 INCHES. ICE ACCUMULATIONS IN WESTERN NORTH
TEXAS AND MUCH OF OKLAHOMA SOUTH OF I-44 IS EXPECTED TO CAUSE
SIGNIFICANT GLAZING ON EXPOSED SURFACES. GUSTY NORTH WIND WILL CAUSE
BLOWING SNOW IN WEST CENTRAL AND NORTH CENTRAL OKLAHOMA.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 6 AM
THURSDAY JANUARY 28.

$$
January 27, 2010 - 129 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
129 PM CST WED JAN 27 2010

.UPDATE...
TEMPERATURES CONTINUE TO WARM AREAWIDE... EVEN IN AREAS UNDERNEATH
THE CLOUD COVER SOUTHEAST. SO HAVE ADJUSTED MAX TEMPERATURES AGAIN
TO RAISE AREAWIDE.

ON THE WINTER STORM... MORE DETAILS WILL FOLLOW WITH THE
DISCUSSION SENT WITH THE AFTERNOON PACKAGE...BUT CURRENTLY DO NOT
EXPECT ANY ADJUSTMENTS TO THE HEADLINES THIS AFTERNOON. ICE/SNOW
ACCUMULATIONS WILL BE SHIFTED SLIGHTLY NORTHWEST AFTER EVALUATING
12Z MODEL DATA. LATEST ICE/SNOW ACCUMULATION FORECAST HAS BEEN
PUSHED TO THE WEB AS A GRAPHICAST. A LATER CHANGEOVER TO SNOW IS
EXPECTED IN MANY AREAS THAT BEGIN WITH RAIN OR ICE... SO SNOW
ACCUMULATION FORECAST HAVE BEEN REDUCED IN THESE AREAS.

&&

.PREV DISCUSSION... /ISSUED 1151 AM CST WED JAN 27 2010/

AVIATION...
A COLD FRONT WILL SHIFT WINDS TO NORTHEAST THIS AFTERNOON INTO
THIS EVENING AS IT MOVES SOUTHEAST ACROSS OKLAHOMA AND NORTH
TEXAS. COLD AIR BEHIND THE FRONT... COMBINED WITH VERY MOIST WARM
AIR ABOVE THE FRONT... WILL RESULT IN MIXED WINTRY PRECIPITATION.
THE EXACT TIMING OF THE BEGINNING OF RAIN... AND THE CHANGEOVER TO
FZRA... ARE STILL SOMEWHAT UNCLEAR... BUT SHOULD BE WITHIN A FEW
HOURS OF WHAT IS FORECAST. THE FZRA IS EXPECTED TO CHANGE TO PL
AND SN FROM NORTHEAST TO SOUTHEAST AFTER 18Z TOMORROW.

PREV DISCUSSION... /ISSUED 1022 AM CST WED JAN 27 2010/

UPDATE...
HAVE ADJUSTED SKY CONDITIONS AND MAX TEMPERATURES FOR TODAY WITH
THIS UPDATE. WIDESPREAD CLOUDINESS ACROSS SOUTHERN/EASTERN
SECTIONS WILL KEEP MAX TEMPERATURES SOMEWHAT LOWER... WHILE COOLER
AIR BEGINNING TO FILTER INTO NORTHWEST OKLAHOMA AND HAVE LOWERED
PROJECTED HIGHS THERE. IN BETWEEN... TEMPERATURES HAVE BEEN RAISED
IN AREAS WHERE THE CLOUDS HAVE MOVED OUT.

FOCUS THEN SHIFTS ON THE WINTER STORM TOMORROW/TOMORROW NIGHT. WE
HAVE NOT MADE ANY ADJUSTMENTS TO THE PACKAGE WITH THIS UPDATE AS
WE ARE STILL ANALYZING THE 12Z MODEL DATA. SMALL VARIATIONS IN
NEAR-SURFACE AND WARM-NOSE /850 MB OR SO/ TEMPERATURES WILL MAKE
SIGNIFICANT VARIATIONS IN PRECIPITATION TYPE /RAIN VS. FZRA VS.
SLEET VS. SNOW/ SO THIS WILL CONTINUE TO BE A COMPLEX FORECAST
WITH WIDE VARIATIONS OF PRECIPITATION TYPE AND ASSOCIATED IMPACTS
ACROSS THE FORECAST AREA.

PREV DISCUSSION... /ISSUED 514 AM CST WED JAN 27 2010/

AVIATION...
12Z TAFS... THERE ARE SOME UNCERTAINTIES AS TO WHEN RAIN WILL
TRANSITION TO FROZEN PRECIPITATION FOR EARLY THU MORNING FROM KOKC
AND KCSM TO KPNC AND KGAG. THUNDERSTORMS WILL ALSO BE POSSIBLE
ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS TONIGHT BUT
CHANCES ARE TOO LOW FOR MENTION IN TAFS.

PREV DISCUSSION... /ISSUED 332 AM CST WED JAN 27 2010/

DISCUSSION...
MAIN FOCUS IS ON THE APPROACHING WINTER STORM. HIGH TEMPERATURES
EXPECTED TO BE WELL ABOVE NORMAL TODAY IN MANY LOCATIONS DESPITE
SOME LOW CLOUDS ACROSS PORTIONS OF THE FA. COLD FRONT WILL MOVE INTO
NW PORTIONS OF FA LATER THIS AFTERNOON. THE FRONT WILL CONT TO MOVE
SOUTH ACROSS THE FA TONIGHT EVENTUALLY BRINGING COLD AIR TO THE
REGION. UPR SYSTEM WILL ALSO APPROACH AND MOVE ACROSS THE SOUTHERN
PLAINS TONIGHT THROUGH FRIDAY. AHEAD OF THIS SYSTEM...WARM MOIST
AIR ABOVE THE SFC WILL MOVE NORTHWARD INTO PORTIONS OF THE FA
WHICH WILL LEAD TO MORE OF A WINTRY MIX OF PRECIP THAN A QUICK
CHANGE OVER TO SNOW. SOME LIGHT RAIN WILL BE POSSIBLE TODAY IN SE
AND CENTRAL PORTIONS OF THE FA DUE TO WAA. MORE WIDESPREAD RAIN
AND POSSIBLY THUNDER WILL DEVELOP TONIGHT AS THE UPPER SYSTEM
APPROACHES. SOME OF THE RAIN MAY CHANGE OVER TO ZR/IP/SN LATE
TONIGHT/EARLY THU MORNING ACROSS NORTHWESTERN PORTIONS OF THE FA
AS COLDER AIR BEGINS TO MAKE ITS WAY INTO THE REGION. HOWEVER...
THE BULK OF THE WINTER PRECIP IS EXPECTED TO OCCUR THU INTO FRI.
RAIN WILL CONT TO CHANGE OVER TO FREEZING RAIN... SLEET... AND/OR
SNOW FROM NORTHWEST TO SOUTHEAST ACROSS THE FA AS THE DAY
PROGRESSES... WITH MOST OF THE CWA RECEIVING SNOW THU NIGHT. THE
PRECIP WILL GRADUALLY END FROM WEST TO EAST FRIDAY AS THE UPPER
SYSTEM BEGINS TO MOVE AWAY FROM THE AREA. SIGNIFICANT SNOW...
SLEET... AND ICE ACCUMULATIONS WILL BE POSSIBLE ACROSS MUCH OF THE
FA. HOWEVER... THERE CONTINUES TO BE SOME UNCERTAINTIES AS TO WHEN
THE CHANGES OF PRECIP TYPE WILL OCCUR WHICH WILL AFFECT
ACCUMULATIONS OF EACH... BUT WITH SIGNIFICANT ACCUMULATIONS OF
SOME SORT OF WINTER PRECIP LIKELY ACROSS PORTIONS OF THE FA WILL
UPGRADE PARTS OF THE WINTER STORM WATCH TO A WINTER STORM WARNING.
THE REST OF THE AREA WILL REMAIN UNDER A WINTER STORM WATCH AS
STILL SOME QUESTIONS HOW MUCH AND OF WHAT KIND OF PRECIP THESE
AREAS WILL RECEIVE.

IN ADDITION TO THE WINTER PRECIP... WINDS WILL BE BREEZY/STRONG THU
INTO THU EVENING WHICH MAY CAUSE BLOWING AND DRIFTING OF THE SNOW.
TEMPERATURES ARE ALSO EXPECTED TO FALL THU AFTN. TEMPS WILL REMAIN
COLD INTO AT LEAST THE FIRST PART OF THE WEEKEND... WITH A GRADUAL
WARM UP BACK TO AROUND AVERAGE EARLY NEXT WEEK. ANOTHER ROUND OF
PRECIPITATION WILL BE POSSIBLE EARLY NEXT WEEK WITH THE NEXT STORM
SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 63 33 34 20 / 10 60 100 80
HOBART OK 64 33 33 18 / 0 60 100 80
WICHITA FALLS TX 67 43 43 24 / 10 70 100 80
GAGE OK 53 24 25 10 / 0 30 100 70
PONCA CITY OK 61 26 27 12 / 10 40 100 70
DURANT OK 60 46 47 29 / 20 60 100 80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$
January 27, 2010 - 240 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
240 PM CST WED JAN 27 2010

OKZ004>031-033>038-TXZ083>085-280445-
/O.CON.KOUN.WS.W.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
240 PM CST WED JAN 27 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THURSDAY TO
6 AM CST FRIDAY...

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OF
STILLWATER... EL RENO...ALTUS...AND QUANAH WHERE 1/4 TO 1/2 INCH
OF ICE ACCUMULATION IS LIKELY. SLEET AND SNOW WILL ALSO OCCUR.
FARTHER NORTH... GREATER SLEET AND SNOW ACCUMULATION ARE LIKELY
FROM WEST CENTRAL TO NORTH CENTRAL OKLAHOMA WHERE 6 TO 10INCHES
OF SNOW IS EXPECTED.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE.
THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ032-039>048-050>052-TXZ086>090-280445-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-WICHITA-KNOX-BAYLOR-
ARCHER-CLAY-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WALTERS...WAURIKA...ARDMORE...
TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
240 PM CST WED JAN 27 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM LATE THURSDAY AFTERNOON THROUGH FRIDAY MORNING.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN AND WILL BEGIN
TO ACCUMULATE ON POWER LINES AND ELEVATED SURFACES...ESPECIALLY
BY THURSDAY EVENING. ICE ACCUMULATIONS MAY LOCALLY REACH 1/4
INCH. SOME SLEET MAY ALSO OCCUR THURSDAY NIGHT.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 27, 2010 - 250 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
250 PM CST WED JAN 27 2010

.DISCUSSION...
MAIN ADJUSTMENTS TO FORECAST WERE TO DECREASE ICE POTENTIAL
ACROSS PARTS OF SOUTHERN OKLAHOMA AND NARROW THE POTENTIAL FOR
HEAVY SNOW TO WEST CENTRAL/NORTHWEST OKLAHOMA. THIS ALSO PLACES
AREAS ALONG AND NEAR I-44 IN HIGHER CHANCE FOR 1/4 TO 1/2 INCH
OF ICE ACCUMULATIONS. WILL LEAVE CURRENT WARNINGS AND WATCHES THE
SAME. STILL SOME POTENTIAL FOR FREEZING RAIN/ICE WITHIN THE WATCH
AREA.

RATHER WARM CONDITIONS HAVE DEVELOP AHEAD OF FRONTAL BOUNDARY THIS
AFTERNOON. QUICK COMPARISON OF SURFACE TEMPERATURES AND MODEL OUTPUT
INDICATES TEMPERATURES ARE NOT COLD ENOUGH NORTH OF THE FRONT AND
TOO WARM NEAR/WITHIN FRONTAL ZONE. THEREFORE...FREEZING RAIN MAY
ADVANCE QUICKER TO THE SOUTH DURING THE DAY THURSDAY. TRANSITION
BETWEEN SNOW/SLEET AND SLEET/FREEZING RAIN STILL UNCERTAIN BUT
EXPECT FREEZING RAIN ZONE TO BE FAIRLY NARROW THAT ADVANCES SLOWLY SOUTH
DURING THE DAY. WARM CONDITIONS OVER THE PAST TWO WEEKS AND PRECIP RATES
WILL LIMIT THE AMOUNT OF ICE ACCUMULATIONS ON EXPOSED SURFACES.

ACCUMULATING PRECIP WILL SHIFT EAST BY LATE FRIDAY MORNING AS 7-5H
TROUGH MOVES EAST OF THE FA. COLD SURFACE HIGH AND CLEAR SKIES
WILL PRODUCE OVERNIGHT LOWS IN THE TEENS AND SINGLE DIGITS BY
EARLY SATURDAY MORNING.

(DAYS 4 TO 7) MODEL GUIDANCE FOR DAYS 4 THROUGH 7 HAS CHANGED
VERY LITTLE WITH THE LATEST RUN... AND SEEMS QUITE REASONABLE.
THERE WILL BE SOME COMPLICATIONS WITH TEMPERATURES EARLY IN THE
EXTENDED PERIOD... WHICH WILL PARTLY DEPEND ON EXACTLY WHAT
HAPPENS WITH THE WINTER STORM TOMORROW AND FRIDAY. FOR NOW... THE
GS MOS LOOKS LIKE IT IS ON THE RIGHT TRACK.

ANOTHER STORM SYSTEM WILL ARRIVE MONDAY... BRINGING A CHANCE OF RAIN
DURING THE DAY ON MONDAY. ALTHOUGH THERE IS A SLIGHT POSSIBILITY OF
FREEZING RAIN IN THE NORTH WITH THIS NEXT STORM SYSTEM... THE MAIN
CHANCE FOR RAIN SHOULD OCCUR AFTER TEMPERATURES RISE ABOVE
FREEZING. A BRIEF CHANGEOVER TO SNOW MAY OCCUR IN THE EVENING
BEFORE THE PRECIPITATION ENDS.

A THIRD WEATHER SYSTEM WILL BRING ANOTHER CHANCE FOR RAIN ON
WEDNESDAY.

GENERALLY ZONAL FLOW NEXT WEEK WILL BRING TEMPERATURES BACK CLOSER
TO SEASONAL AVERAGES.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 33 34 24 28 / 60 100 80 40
HOBART OK 33 33 21 26 / 60 100 80 20
WICHITA FALLS TX 43 43 29 32 / 70 100 80 20
GAGE OK 24 25 17 27 / 30 100 70 30
PONCA CITY OK 26 27 22 27 / 40 100 70 50
DURANT OK 46 47 31 34 / 60 100 80 50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM THURSDAY MORNING THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

6/23
January 27, 2010 - 411 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
411 PM CST WED JAN 27 2010

OKZ004>031-033>038-TXZ083>085-280630-
/O.COR.KOUN.WS.W.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
411 PM CST WED JAN 27 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THURSDAY TO
6 AM CST FRIDAY...

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM THURSDAY MORNING THROUGH EARLY FRIDAY MORNING.

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OF
STILLWATER... EL RENO...ALTUS...AND QUANAH WHERE 1/4 TO 1/2 INCH
OF ICE ACCUMULATION IS LIKELY. SLEET AND SNOW WILL ALSO OCCUR.
FARTHER NORTH... GREATER SLEET AND SNOW ACCUMULATION ARE LIKELY
FROM WEST CENTRAL TO NORTH CENTRAL OKLAHOMA WHERE 6 TO 10 INCHES
OF SNOW IS EXPECTED.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE.
THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ032-039>048-050>052-TXZ086>090-280630-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-WICHITA-KNOX-BAYLOR-
ARCHER-CLAY-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WALTERS...WAURIKA...ARDMORE...
TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
411 PM CST WED JAN 27 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

* TIMING: THE MOST LIKELY TIME FOR HAZARDOUS WINTER WEATHER WILL
BE FROM LATE THURSDAY AFTERNOON THROUGH FRIDAY MORNING.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN AND WILL BEGIN
TO ACCUMULATE ON POWER LINES AND ELEVATED SURFACES...ESPECIALLY
BY THURSDAY EVENING. ICE ACCUMULATIONS MAY LOCALLY REACH 1/4
INCH. SOME SLEET MAY ALSO OCCUR THURSDAY NIGHT.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 27, 2010 - 622 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
622 PM CST WED JAN 27 2010

.AVIATION...WE TRENDED TOWARD A SOMEWHAT LATER ONSET OF LOW
CEILINGS AND LIGHT PRECIPITATION THAT WILL OCCUR TONIGHT.
GENERALLY FOLLOWED THE TIMING OF THE NAM HUMIDITY AND
PRECIPITATION FIELDS. THE MOST SIGNIFICANT CHANGE IS AT KPNC AND
KGAG...WHERE AN INITIAL INTRUSION OF DRY ARCTIC AIR WILL PROVIDE
SEVERAL HOURS OF VFR CEILINGS. THE ANTICIPATED STORM SYSTEM LOOKS
TO UNDERGO ITS MOST SIGNIFICANT CYCLOGENESIS IN THE SOUTHERN TEXAS
PANHANDLE. THIS WILL KEEP MID LEVELS WARM ACROSS CENTRAL AND
SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS...RESULTING IN FZRA
AND PL ONCE THE ARCTIC AIR DRIVES SURFACE TEMPS BELOW FREEZING. WE
INTRODUCED SOME THUNDER FOR THURSDAY MORNING...GIVEN THE MAGNITUDE
OF THE DEVELOPING WARM NOSE ALOFT PER THE NAM SOUNDINGS. A
CHANGEOVER TOWARD MODERATE SNOW SHOULD OCCUR LATE IN THE PERIOD
OVER FAR WESTERN OKLAHOMA.

&&

.PREV DISCUSSION... /ISSUED 250 PM CST WED JAN 27 2010/

DISCUSSION...
MAIN ADJUSTMENTS TO FORECAST WERE TO DECREASE ICE POTENTIAL
ACROSS PARTS OF SOUTHERN OKLAHOMA AND NARROW THE POTENTIAL FOR
HEAVY SNOW TO WEST CENTRAL/NORTHWEST OKLAHOMA. THIS ALSO PLACES
AREAS ALONG AND NEAR I-44 IN HIGHER CHANCE FOR 1/4 TO 1/2 INCH
OF ICE ACCUMULATIONS. WILL LEAVE CURRENT WARNINGS AND WATCHES THE
SAME. STILL SOME POTENTIAL FOR FREEZING RAIN/ICE WITHIN THE WATCH
AREA.

RATHER WARM CONDITIONS HAVE DEVELOP AHEAD OF FRONTAL BOUNDARY THIS
AFTERNOON. QUICK COMPARISON OF SURFACE TEMPERATURES AND MODEL OUTPUT
INDICATES TEMPERATURES ARE NOT COLD ENOUGH NORTH OF THE FRONT AND
TOO WARM NEAR/WITHIN FRONTAL ZONE. THEREFORE...FREEZING RAIN MAY
ADVANCE QUICKER TO THE SOUTH DURING THE DAY THURSDAY. TRANSITION
BETWEEN SNOW/SLEET AND SLEET/FREEZING RAIN STILL UNCERTAIN BUT
EXPECT FREEZING RAIN ZONE TO BE FAIRLY NARROW THAT ADVANCES SLOWLY SOUTH
DURING THE DAY. WARM CONDITIONS OVER THE PAST TWO WEEKS AND PRECIP RATES
WILL LIMIT THE AMOUNT OF ICE ACCUMULATIONS ON EXPOSED SURFACES.

ACCUMULATING PRECIP WILL SHIFT EAST BY LATE FRIDAY MORNING AS 7-5H
TROUGH MOVES EAST OF THE FA. COLD SURFACE HIGH AND CLEAR SKIES
WILL PRODUCE OVERNIGHT LOWS IN THE TEENS AND SINGLE DIGITS BY
EARLY SATURDAY MORNING.

(DAYS 4 TO 7) MODEL GUIDANCE FOR DAYS 4 THROUGH 7 HAS CHANGED
VERY LITTLE WITH THE LATEST RUN... AND SEEMS QUITE REASONABLE.
THERE WILL BE SOME COMPLICATIONS WITH TEMPERATURES EARLY IN THE
EXTENDED PERIOD... WHICH WILL PARTLY DEPEND ON EXACTLY WHAT
HAPPENS WITH THE WINTER STORM TOMORROW AND FRIDAY. FOR NOW... THE
GS MOS LOOKS LIKE IT IS ON THE RIGHT TRACK.

ANOTHER STORM SYSTEM WILL ARRIVE MONDAY... BRINGING A CHANCE OF RAIN
DURING THE DAY ON MONDAY. ALTHOUGH THERE IS A SLIGHT POSSIBILITY OF
FREEZING RAIN IN THE NORTH WITH THIS NEXT STORM SYSTEM... THE MAIN
CHANCE FOR RAIN SHOULD OCCUR AFTER TEMPERATURES RISE ABOVE
FREEZING. A BRIEF CHANGEOVER TO SNOW MAY OCCUR IN THE EVENING
BEFORE THE PRECIPITATION ENDS.

A THIRD WEATHER SYSTEM WILL BRING ANOTHER CHANCE FOR RAIN ON
WEDNESDAY.

GENERALLY ZONAL FLOW NEXT WEEK WILL BRING TEMPERATURES BACK CLOSER
TO SEASONAL AVERAGES.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 33 34 24 28 / 60 100 80 40
HOBART OK 33 33 21 26 / 60 100 80 20
WICHITA FALLS TX 43 43 29 32 / 70 100 80 20
GAGE OK 24 25 17 27 / 30 100 70 30
PONCA CITY OK 26 27 22 27 / 40 100 70 50
DURANT OK 46 47 31 34 / 60 100 80 50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

32/22/22
January 27, 2010 - 824 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
824 PM CST WED JAN 27 2010

.UPDATE...
UPDATED THE FORECAST TO DELAY THE ONSET OF PRECIPITATION UNTIL
LATE TONIGHT WHILE ALSO REDUCING POPS ACROSS THE NORTHERN HALF OF
THE AREA. CURRENTLY RADAR INDICATES NO PRECIP OVER THE AREA AS A
SHORT WAVE RIDGE IS MOVING INTO THE SOUTHERN PLAINS. LOW LEVEL
MOISTURE IS ALSO LIKELY STILL TOO SHALLOW FOR DRIZZLE AT THIS
TIME. LATEST NAM CONFINES RAIN DEVELOPMENT TO SOUTHERN OK AND
WESTERN NORTH TEXAS THROUGH THE NIGHT. ALSO MADE SOME MINOR
ADJUSTMENTS TO PRECIPITATION TYPES TO SLOW THE ONSET OF FREEZING
PCPN ACROSS CENTRAL OK TONIGHT. THE MESONET INDICATES THAT THE
LEAD WIND SHIFT WAS MOVING THROUGH CENTRAL AND SOUTHWEST OK THIS
EVENING. TEMPERATURES DROP OFF STEADILY... BUT NOT DRAMATICALLY...
BEHIND THE FRONT... WITH NO FREEZING WEATHER CURRENTLY IN THE
STATE.

&&

.PREV DISCUSSION... /ISSUED 622 PM CST WED JAN 27 2010/

AVIATION...WE TRENDED TOWARD A SOMEWHAT LATER ONSET OF LOW
CEILINGS AND LIGHT PRECIPITATION THAT WILL OCCUR TONIGHT.
GENERALLY FOLLOWED THE TIMING OF THE NAM HUMIDITY AND
PRECIPITATION FIELDS. THE MOST SIGNIFICANT CHANGE IS AT KPNC AND
KGAG...WHERE AN INITIAL INTRUSION OF DRY ARCTIC AIR WILL PROVIDE
SEVERAL HOURS OF VFR CEILINGS. THE ANTICIPATED STORM SYSTEM LOOKS
TO UNDERGO ITS MOST SIGNIFICANT CYCLOGENESIS IN THE SOUTHERN TEXAS
PANHANDLE. THIS WILL KEEP MID LEVELS WARM ACROSS CENTRAL AND
SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS...RESULTING IN FZRA
AND PL ONCE THE ARCTIC AIR DRIVES SURFACE TEMPS BELOW FREEZING. WE
INTRODUCED SOME THUNDER FOR THURSDAY MORNING...GIVEN THE MAGNITUDE
OF THE DEVELOPING WARM NOSE ALOFT PER THE NAM SOUNDINGS. A
CHANGEOVER TOWARD MODERATE SNOW SHOULD OCCUR LATE IN THE PERIOD
OVER FAR WESTERN OKLAHOMA.

PREV DISCUSSION... /ISSUED 250 PM CST WED JAN 27 2010/

DISCUSSION...
MAIN ADJUSTMENTS TO FORECAST WERE TO DECREASE ICE POTENTIAL
ACROSS PARTS OF SOUTHERN OKLAHOMA AND NARROW THE POTENTIAL FOR
HEAVY SNOW TO WEST CENTRAL/NORTHWEST OKLAHOMA. THIS ALSO PLACES
AREAS ALONG AND NEAR I-44 IN HIGHER CHANCE FOR 1/4 TO 1/2 INCH
OF ICE ACCUMULATIONS. WILL LEAVE CURRENT WARNINGS AND WATCHES THE
SAME. STILL SOME POTENTIAL FOR FREEZING RAIN/ICE WITHIN THE WATCH
AREA.

RATHER WARM CONDITIONS HAVE DEVELOP AHEAD OF FRONTAL BOUNDARY THIS
AFTERNOON. QUICK COMPARISON OF SURFACE TEMPERATURES AND MODEL OUTPUT
INDICATES TEMPERATURES ARE NOT COLD ENOUGH NORTH OF THE FRONT AND
TOO WARM NEAR/WITHIN FRONTAL ZONE. THEREFORE...FREEZING RAIN MAY
ADVANCE QUICKER TO THE SOUTH DURING THE DAY THURSDAY. TRANSITION
BETWEEN SNOW/SLEET AND SLEET/FREEZING RAIN STILL UNCERTAIN BUT
EXPECT FREEZING RAIN ZONE TO BE FAIRLY NARROW THAT ADVANCES SLOWLY SOUTH
DURING THE DAY. WARM CONDITIONS OVER THE PAST TWO WEEKS AND PRECIP RATES
WILL LIMIT THE AMOUNT OF ICE ACCUMULATIONS ON EXPOSED SURFACES.

ACCUMULATING PRECIP WILL SHIFT EAST BY LATE FRIDAY MORNING AS 7-5H
TROUGH MOVES EAST OF THE FA. COLD SURFACE HIGH AND CLEAR SKIES
WILL PRODUCE OVERNIGHT LOWS IN THE TEENS AND SINGLE DIGITS BY
EARLY SATURDAY MORNING.

(DAYS 4 TO 7) MODEL GUIDANCE FOR DAYS 4 THROUGH 7 HAS CHANGED
VERY LITTLE WITH THE LATEST RUN... AND SEEMS QUITE REASONABLE.
THERE WILL BE SOME COMPLICATIONS WITH TEMPERATURES EARLY IN THE
EXTENDED PERIOD... WHICH WILL PARTLY DEPEND ON EXACTLY WHAT
HAPPENS WITH THE WINTER STORM TOMORROW AND FRIDAY. FOR NOW... THE
GS MOS LOOKS LIKE IT IS ON THE RIGHT TRACK.

ANOTHER STORM SYSTEM WILL ARRIVE MONDAY... BRINGING A CHANCE OF RAIN
DURING THE DAY ON MONDAY. ALTHOUGH THERE IS A SLIGHT POSSIBILITY OF
FREEZING RAIN IN THE NORTH WITH THIS NEXT STORM SYSTEM... THE MAIN
CHANCE FOR RAIN SHOULD OCCUR AFTER TEMPERATURES RISE ABOVE
FREEZING. A BRIEF CHANGEOVER TO SNOW MAY OCCUR IN THE EVENING
BEFORE THE PRECIPITATION ENDS.

A THIRD WEATHER SYSTEM WILL BRING ANOTHER CHANCE FOR RAIN ON
WEDNESDAY.

GENERALLY ZONAL FLOW NEXT WEEK WILL BRING TEMPERATURES BACK CLOSER
TO SEASONAL AVERAGES.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 33 34 24 28 / 50 100 80 40
HOBART OK 33 33 21 26 / 60 100 80 20
WICHITA FALLS TX 43 43 29 32 / 70 100 80 20
GAGE OK 24 25 17 27 / 30 100 70 30
PONCA CITY OK 26 27 22 27 / 30 100 70 50
DURANT OK 46 47 31 34 / 60 100 80 50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

32/06
January 27, 2010 - 959 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
959 PM CST WED JAN 27 2010

.UPDATE...
AS WE CONTINUE TO EVALUATE THE 00Z NAM RUN... IT APPEARS MORE LIKELY THAT
THE PRECIPITATION PHASE FOR CENTRAL AND SOUTHWEST OKLAHOMA WILL BE
MOSTLY ICE WITH THE SNOW OCCURRING MAINLY NEAR THE LAST PART OF THE
EVENT. WE WILL INCREASE THE RANGE OF POSSIBLE ICE ACCUMULATIONS TO
NEAR 3/4 OF AN INCH... WITH LOCALLY HEAVIER AMOUNTS POSSIBLE UNDER
SOME OF THE STRONGER CONVECTIVE ELEMENTS. HOWEVER... THERE
CONTINUES TO BE UNCERTAINTY REGARDING HOW QUICKLY TEMPS DROP BELOW
FREEZING TOMORROW AND THE LENGTH OF THE FREEZING RAIN VERSUS SLEET
PHASES. MOST ROADWAYS WILL LIKELY BE SLOWER TO ICE UP... EXCEPT
FOR BRIDGES/OVERPASSES... HOWEVER THERE CONTINUES TO BE A GREATER
CONCERN FOR POWER LINES AND TREE LIMBS.

&&

.PREV DISCUSSION... /ISSUED 824 PM CST WED JAN 27 2010/

UPDATE...
UPDATED THE FORECAST TO DELAY THE ONSET OF PRECIPITATION UNTIL
LATE TONIGHT WHILE ALSO REDUCING POPS ACROSS THE NORTHERN HALF OF
THE AREA. CURRENTLY RADAR INDICATES NO PRECIP OVER THE AREA AS A
SHORT WAVE RIDGE IS MOVING INTO THE SOUTHERN PLAINS. LOW LEVEL
MOISTURE IS ALSO LIKELY STILL TOO SHALLOW FOR DRIZZLE AT THIS
TIME. LATEST NAM CONFINES RAIN DEVELOPMENT TO SOUTHERN OK AND
WESTERN NORTH TEXAS THROUGH THE NIGHT. ALSO MADE SOME MINOR
ADJUSTMENTS TO PRECIPITATION TYPES TO SLOW THE ONSET OF FREEZING
PCPN ACROSS CENTRAL OK TONIGHT. THE MESONET INDICATES THAT THE
LEAD WIND SHIFT WAS MOVING THROUGH CENTRAL AND SOUTHWEST OK THIS
EVENING. TEMPERATURES DROP OFF STEADILY... BUT NOT DRAMATICALLY...
BEHIND THE FRONT... WITH NO FREEZING WEATHER CURRENTLY IN THE
STATE.

PREV DISCUSSION... /ISSUED 622 PM CST WED JAN 27 2010/

AVIATION...WE TRENDED TOWARD A SOMEWHAT LATER ONSET OF LOW
CEILINGS AND LIGHT PRECIPITATION THAT WILL OCCUR TONIGHT.
GENERALLY FOLLOWED THE TIMING OF THE NAM HUMIDITY AND
PRECIPITATION FIELDS. THE MOST SIGNIFICANT CHANGE IS AT KPNC AND
KGAG...WHERE AN INITIAL INTRUSION OF DRY ARCTIC AIR WILL PROVIDE
SEVERAL HOURS OF VFR CEILINGS. THE ANTICIPATED STORM SYSTEM LOOKS
TO UNDERGO ITS MOST SIGNIFICANT CYCLOGENESIS IN THE SOUTHERN TEXAS
PANHANDLE. THIS WILL KEEP MID LEVELS WARM ACROSS CENTRAL AND
SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS...RESULTING IN FZRA
AND PL ONCE THE ARCTIC AIR DRIVES SURFACE TEMPS BELOW FREEZING. WE
INTRODUCED SOME THUNDER FOR THURSDAY MORNING...GIVEN THE MAGNITUDE
OF THE DEVELOPING WARM NOSE ALOFT PER THE NAM SOUNDINGS. A
CHANGEOVER TOWARD MODERATE SNOW SHOULD OCCUR LATE IN THE PERIOD
OVER FAR WESTERN OKLAHOMA.

PREV DISCUSSION... /ISSUED 250 PM CST WED JAN 27 2010/

DISCUSSION...
MAIN ADJUSTMENTS TO FORECAST WERE TO DECREASE ICE POTENTIAL
ACROSS PARTS OF SOUTHERN OKLAHOMA AND NARROW THE POTENTIAL FOR
HEAVY SNOW TO WEST CENTRAL/NORTHWEST OKLAHOMA. THIS ALSO PLACES
AREAS ALONG AND NEAR I-44 IN HIGHER CHANCE FOR 1/4 TO 1/2 INCH
OF ICE ACCUMULATIONS. WILL LEAVE CURRENT WARNINGS AND WATCHES THE
SAME. STILL SOME POTENTIAL FOR FREEZING RAIN/ICE WITHIN THE WATCH
AREA.

RATHER WARM CONDITIONS HAVE DEVELOP AHEAD OF FRONTAL BOUNDARY THIS
AFTERNOON. QUICK COMPARISON OF SURFACE TEMPERATURES AND MODEL OUTPUT
INDICATES TEMPERATURES ARE NOT COLD ENOUGH NORTH OF THE FRONT AND
TOO WARM NEAR/WITHIN FRONTAL ZONE. THEREFORE...FREEZING RAIN MAY
ADVANCE QUICKER TO THE SOUTH DURING THE DAY THURSDAY. TRANSITION
BETWEEN SNOW/SLEET AND SLEET/FREEZING RAIN STILL UNCERTAIN BUT
EXPECT FREEZING RAIN ZONE TO BE FAIRLY NARROW THAT ADVANCES SLOWLY SOUTH
DURING THE DAY. WARM CONDITIONS OVER THE PAST TWO WEEKS AND PRECIP RATES
WILL LIMIT THE AMOUNT OF ICE ACCUMULATIONS ON EXPOSED SURFACES.

ACCUMULATING PRECIP WILL SHIFT EAST BY LATE FRIDAY MORNING AS 7-5H
TROUGH MOVES EAST OF THE FA. COLD SURFACE HIGH AND CLEAR SKIES
WILL PRODUCE OVERNIGHT LOWS IN THE TEENS AND SINGLE DIGITS BY
EARLY SATURDAY MORNING.

(DAYS 4 TO 7) MODEL GUIDANCE FOR DAYS 4 THROUGH 7 HAS CHANGED
VERY LITTLE WITH THE LATEST RUN... AND SEEMS QUITE REASONABLE.
THERE WILL BE SOME COMPLICATIONS WITH TEMPERATURES EARLY IN THE
EXTENDED PERIOD... WHICH WILL PARTLY DEPEND ON EXACTLY WHAT
HAPPENS WITH THE WINTER STORM TOMORROW AND FRIDAY. FOR NOW... THE
GS MOS LOOKS LIKE IT IS ON THE RIGHT TRACK.

ANOTHER STORM SYSTEM WILL ARRIVE MONDAY... BRINGING A CHANCE OF RAIN
DURING THE DAY ON MONDAY. ALTHOUGH THERE IS A SLIGHT POSSIBILITY OF
FREEZING RAIN IN THE NORTH WITH THIS NEXT STORM SYSTEM... THE MAIN
CHANCE FOR RAIN SHOULD OCCUR AFTER TEMPERATURES RISE ABOVE
FREEZING. A BRIEF CHANGEOVER TO SNOW MAY OCCUR IN THE EVENING
BEFORE THE PRECIPITATION ENDS.

A THIRD WEATHER SYSTEM WILL BRING ANOTHER CHANCE FOR RAIN ON
WEDNESDAY.

GENERALLY ZONAL FLOW NEXT WEEK WILL BRING TEMPERATURES BACK CLOSER
TO SEASONAL AVERAGES.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 33 34 24 28 / 50 100 80 40
HOBART OK 33 33 21 26 / 60 100 80 20
WICHITA FALLS TX 43 43 29 32 / 70 100 80 20
GAGE OK 24 25 17 27 / 30 100 70 30
PONCA CITY OK 26 27 22 27 / 30 100 70 50
DURANT OK 46 47 31 34 / 60 100 80 50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
OKZ004>031-033>038.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THURSDAY TO 6 AM CST FRIDAY FOR
TXZ083>085.

WINTER STORM WATCH FROM 6 AM CST THURSDAY THROUGH LATE THURSDAY
NIGHT FOR TXZ086>090.

&&

$$

32/06
January 27, 2010 - 1017 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1017 PM CST WED JAN 27 2010

OKZ004>031-033>038-TXZ083>085-281230-
/O.CON.KOUN.WS.W.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
1017 PM CST WED JAN 27 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THURSDAY TO
6 AM CST FRIDAY...

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OF
STILLWATER... EL RENO...ALTUS...AND QUANAH WHERE 1/4 TO 1/2 INCH
OF ICE ACCUMULATION IS LIKELY. HIGHER ICE ACCUMULATIONS TO NEAR
3/4 INCH WILL BE POSSIBLE ACROSS PARTS OF SOUTHWEST AND CENTRAL
OKLAHOMA. SLEET AND SNOW WILL ALSO OCCUR OVER THE AREA
ESPECIALLY TOWARDS EVENING. FARTHER NORTH... GREATER SLEET AND SNOW
ACCUMULATIONS ARE LIKELY FROM WEST CENTRAL TO NORTH CENTRAL
OKLAHOMA WHERE 6 TO 10 INCHES OF SNOW IS EXPECTED.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT WILL HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE.
THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ032-039>048-050>052-TXZ086>090-281230-
/O.CON.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-WICHITA-KNOX-BAYLOR-
ARCHER-CLAY-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WALTERS...WAURIKA...ARDMORE...
TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
1017 PM CST WED JAN 27 2010

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM CST THURSDAY
THROUGH LATE THURSDAY NIGHT...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM CST THURSDAY
THROUGH LATE THURSDAY NIGHT.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN AND WILL BEGIN
TO ACCUMULATE ON POWER LINES AND ELEVATED SURFACES...
ESPECIALLY BY THURSDAY EVENING. ICE ACCUMULATIONS MAY LOCALLY
REACH 1/4 INCH. SOME SLEET MAY ALSO OCCUR THURSDAY NIGHT.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
January 27, 2010 - 1050 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1050 PM CST WED JAN 27 2010

OKZ004>048-050>052-TXZ083>090-281100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1050 PM CST WED JAN 27 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...OVERNIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS ARE POSSIBLE IN WESTERN NORTH TEXAS TOWARDS
MORNING. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
MOISTURE WILL CONTINUE TO RETURN NORTHWARD THROUGH THE SOUTHERN
PLAINS OVERNIGHT AS SOUTHERLY WINDS INCREASE IN RESPONSE TO
STRENGTHENING UPPER LEVEL STORM SYSTEM OVER NORTHERN MEXICO. SHOWERS
AND A FEW THUNDERSTORMS MAY DEVELOP OVER PARTS OF WESTERN NORTH
TEXAS TOWARDS MORNING AS THE STORM SYSTEM APPROACHES FROM THE
SOUTHWEST. HOWEVER... INSTABILITY WILL BE LIMITED AND NO SEVERE
STORMS ARE EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY JAN 27.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...20 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE IN SOUTHERN OKLAHOMA AND
WESTERN NORTH TEXAS ON THURSDAY AS THE STRONG STORM SYSTEM MOVES
OVER THE SOUTHERN PLAINS. SEVERE THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
THE THURSDAY STORM IS EXPECTED TO CREATE HAZARDOUS WINTER WEATHER.
UP TO 10 INCHES OF SNOW IS EXPECTED IN WEST CENTRAL AND NORTHERN
OKLAHOMA FROM THURSDAY THROUGH FRIDAY MORNING. ICE ACCUMULATION OF
1/4 TO 3/4 INCH OF ICE WILL BE POSSIBLE ACROSS PORTIONS OF SOUTHWEST
AND CENTRAL OKLAHOMA WITH AROUND 1/4 INCH POSSIBLE IN WESTERN NORTH
TEXAS. ADDITIONAL SLEET AND SNOW ACCUMULATIONS OF 1 TO 2 INCHES WILL
ALSO BE POSSIBLE. PLEASE REFER TO THE LATEST WINTER WEATHER WARNING
AND WATCH PRODUCTS FOR ADDITIONAL DETAILS.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
THURSDAY.

$$
January 28, 2010 - 1210 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1210 AM CST THU JAN 28 2010

.AVIATION...TAFS CONTINUE TO FOLLOW THE TIMING OF THE NAM AND ITS
THERMAL PROFILE FOR DETERMINING PRECIPITATION TYPE. A FEW SHOWERS
HAD BEGUN TO SHOW UP NEAR THE INITIAL FRONTAL ZONE OVER SOUTHERN
OKLAHOMA. AS A STRONGER FRONT CATCHES UP LATER TONIGHT...
FRONTOGENESIS WILL WORK WITH WEAKLY UNSTABLE AIR TO PRODUCE
CONVECTIVE SHOWERS AND POSSIBLY THUNDER FROM NORTH TEXAS UP TO
NEAR CENTRAL OKLAHOMA. A DEEPENING LOW LEVEL CYCLONE WILL INCREASE
THE WINDS SIGNIFICANTLY...AS HAD ALREADY BEGUN TO OCCUR AT 06Z.
MORE SUBSTANTIAL REDUCTION OF VISIBILITY FROM ICE AND SNOW WILL
OCCUR LATER IN THE DAY AND EARLY EVENING. ALTHOUGH NOT YET
REFLECTED IN THE TAFS...SOME BLOWING SNOW IS LIKELY AT WESTERN
OKLAHOMA SITES ONCE ACCUMULATION BECOMES SUFFICIENT.

&&

.PREV DISCUSSION... /ISSUED 959 PM CST WED JAN 27 2010/

UPDATE...
AS WE CONTINUE TO EVALUATE THE 00Z NAM RUN... IT APPEARS MORE LIKELY THAT
THE PRECIPITATION PHASE FOR CENTRAL AND SOUTHWEST OKLAHOMA WILL BE
MOSTLY ICE WITH THE SNOW OCCURRING MAINLY NEAR THE LAST PART OF THE
EVENT. WE WILL INCREASE THE RANGE OF POSSIBLE ICE ACCUMULATIONS TO
NEAR 3/4 OF AN INCH... WITH LOCALLY HEAVIER AMOUNTS POSSIBLE UNDER
SOME OF THE STRONGER CONVECTIVE ELEMENTS. HOWEVER... THERE
CONTINUES TO BE UNCERTAINTY REGARDING HOW QUICKLY TEMPS DROP BELOW
FREEZING TOMORROW AND THE LENGTH OF THE FREEZING RAIN VERSUS SLEET
PHASES. MOST ROADWAYS WILL LIKELY BE SLOWER TO ICE UP... EXCEPT
FOR BRIDGES/OVERPASSES... HOWEVER THERE CONTINUES TO BE A GREATER
CONCERN FOR POWER LINES AND TREE LIMBS.

PREV DISCUSSION... /ISSUED 824 PM CST WED JAN 27 2010/

UPDATE...
UPDATED THE FORECAST TO DELAY THE ONSET OF PRECIPITATION UNTIL
LATE TONIGHT WHILE ALSO REDUCING POPS ACROSS THE NORTHERN HALF OF
THE AREA. CURRENTLY RADAR INDICATES NO PRECIP OVER THE AREA AS A
SHORT WAVE RIDGE IS MOVING INTO THE SOUTHERN PLAINS. LOW LEVEL
MOISTURE IS ALSO LIKELY STILL TOO SHALLOW FOR DRIZZLE AT THIS
TIME. LATEST NAM CONFINES RAIN DEVELOPMENT TO SOUTHERN OK AND
WESTERN NORTH TEXAS THROUGH THE NIGHT. ALSO MADE SOME MINOR
ADJUSTMENTS TO PRECIPITATION TYPES TO SLOW THE ONSET OF FREEZING
PCPN ACROSS CENTRAL OK TONIGHT. THE MESONET INDICATES THAT THE
LEAD WIND SHIFT WAS MOVING THROUGH CENTRAL AND SOUTHWEST OK THIS
EVENING. TEMPERATURES DROP OFF STEADILY... BUT NOT DRAMATICALLY...
BEHIND THE FRONT... WITH NO FREEZING WEATHER CURRENTLY IN THE
STATE.

PREV DISCUSSION... /ISSUED 622 PM CST WED JAN 27 2010/

AVIATION...WE TRENDED TOWARD A SOMEWHAT LATER ONSET OF LOW
CEILINGS AND LIGHT PRECIPITATION THAT WILL OCCUR TONIGHT.
GENERALLY FOLLOWED THE TIMING OF THE NAM HUMIDITY AND
PRECIPITATION FIELDS. THE MOST SIGNIFICANT CHANGE IS AT KPNC AND
KGAG...WHERE AN INITIAL INTRUSION OF DRY ARCTIC AIR WILL PROVIDE
SEVERAL HOURS OF VFR CEILINGS. THE ANTICIPATED STORM SYSTEM LOOKS
TO UNDERGO ITS MOST SIGNIFICANT CYCLOGENESIS IN THE SOUTHERN TEXAS
PANHANDLE. THIS WILL KEEP MID LEVELS WARM ACROSS CENTRAL AND
SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS...RESULTING IN FZRA
AND PL ONCE THE ARCTIC AIR DRIVES SURFACE TEMPS BELOW FREEZING. WE
INTRODUCED SOME THUNDER FOR THURSDAY MORNING...GIVEN THE MAGNITUDE
OF THE DEVELOPING WARM NOSE ALOFT PER THE NAM SOUNDINGS. A
CHANGEOVER TOWARD MODERATE SNOW SHOULD OCCUR LATE IN THE PERIOD
OVER FAR WESTERN OKLAHOMA.

PREV DISCUSSION... /ISSUED 250 PM CST WED JAN 27 2010/

DISCUSSION...
MAIN ADJUSTMENTS TO FORECAST WERE TO DECREASE ICE POTENTIAL
ACROSS PARTS OF SOUTHERN OKLAHOMA AND NARROW THE POTENTIAL FOR
HEAVY SNOW TO WEST CENTRAL/NORTHWEST OKLAHOMA. THIS ALSO PLACES
AREAS ALONG AND NEAR I-44 IN HIGHER CHANCE FOR 1/4 TO 1/2 INCH
OF ICE ACCUMULATIONS. WILL LEAVE CURRENT WARNINGS AND WATCHES THE
SAME. STILL SOME POTENTIAL FOR FREEZING RAIN/ICE WITHIN THE WATCH
AREA.

RATHER WARM CONDITIONS HAVE DEVELOP AHEAD OF FRONTAL BOUNDARY THIS
AFTERNOON. QUICK COMPARISON OF SURFACE TEMPERATURES AND MODEL OUTPUT
INDICATES TEMPERATURES ARE NOT COLD ENOUGH NORTH OF THE FRONT AND
TOO WARM NEAR/WITHIN FRONTAL ZONE. THEREFORE...FREEZING RAIN MAY
ADVANCE QUICKER TO THE SOUTH DURING THE DAY THURSDAY. TRANSITION
BETWEEN SNOW/SLEET AND SLEET/FREEZING RAIN STILL UNCERTAIN BUT
EXPECT FREEZING RAIN ZONE TO BE FAIRLY NARROW THAT ADVANCES SLOWLY SOUTH
DURING THE DAY. WARM CONDITIONS OVER THE PAST TWO WEEKS AND PRECIP RATES
WILL LIMIT THE AMOUNT OF ICE ACCUMULATIONS ON EXPOSED SURFACES.

ACCUMULATING PRECIP WILL SHIFT EAST BY LATE FRIDAY MORNING AS 7-5H
TROUGH MOVES EAST OF THE FA. COLD SURFACE HIGH AND CLEAR SKIES
WILL PRODUCE OVERNIGHT LOWS IN THE TEENS AND SINGLE DIGITS BY
EARLY SATURDAY MORNING.

(DAYS 4 TO 7) MODEL GUIDANCE FOR DAYS 4 THROUGH 7 HAS CHANGED
VERY LITTLE WITH THE LATEST RUN... AND SEEMS QUITE REASONABLE.
THERE WILL BE SOME COMPLICATIONS WITH TEMPERATURES EARLY IN THE
EXTENDED PERIOD... WHICH WILL PARTLY DEPEND ON EXACTLY WHAT
HAPPENS WITH THE WINTER STORM TOMORROW AND FRIDAY. FOR NOW... THE
GS MOS LOOKS LIKE IT IS ON THE RIGHT TRACK.

ANOTHER STORM SYSTEM WILL ARRIVE MONDAY... BRINGING A CHANCE OF RAIN
DURING THE DAY ON MONDAY. ALTHOUGH THERE IS A SLIGHT POSSIBILITY OF
FREEZING RAIN IN THE NORTH WITH THIS NEXT STORM SYSTEM... THE MAIN
CHANCE FOR RAIN SHOULD OCCUR AFTER TEMPERATURES RISE ABOVE
FREEZING. A BRIEF CHANGEOVER TO SNOW MAY OCCUR IN THE EVENING
BEFORE THE PRECIPITATION ENDS.

A THIRD WEATHER SYSTEM WILL BRING ANOTHER CHANCE FOR RAIN ON
WEDNESDAY.

GENERALLY ZONAL FLOW NEXT WEEK WILL BRING TEMPERATURES BACK CLOSER
TO SEASONAL AVERAGES.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 34 24 28 13 / 100 80 40 10
HOBART OK 33 21 26 14 / 100 80 20 0
WICHITA FALLS TX 43 29 32 22 / 100 80 20 0
GAGE OK 25 17 27 6 / 100 70 30 0
PONCA CITY OK 27 22 27 6 / 100 70 50 10
DURANT OK 47 31 34 25 / 100 80 50 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM 6 AM THIS MORNING TO 6 AM CST FRIDAY
FOR OKZ004>031-033>038.

WINTER STORM WATCH FROM 6 AM CST THIS MORNING THROUGH LATE
TONIGHT FOR OKZ032-039>048-050>052.

TX...WINTER STORM WARNING FROM 6 AM THIS MORNING TO 6 AM CST FRIDAY
FOR TXZ083>085.

WINTER STORM WATCH FROM 6 AM CST THIS MORNING THROUGH LATE
TONIGHT FOR TXZ086>090.

&&

$$

32/22/22
January 28, 2010 - 130 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
130 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-280900-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
130 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT EXTENDING FROM NEAR COALGATE...TO ARDMORE...TO NEAR
HENRIETTA TEXAS IS MOVING SOUTH THROUGH THE AREA. NORTH OF THE
FRONT WINDS WERE FROM THE NORTH TO NORTHEAST AT 15 TO 25 MPH.
TEMPERATURES HAD DROPPED INTO THE LOWER 30S AND UPPER 20S IN
NORTHERN OKLAHOMA...WITH MID TO UPPER 30S IN CENTRAL OKLAHOMA... AND
IN WESTERN NORTH TEXAS AND SOUTHERN OKLAHOMA. AHEAD OF THE FRONT
TEMPERATURES REMAINED IN THE 50S. SCATTERED SHOWERS HAD ALSO BEGUN
TO DEVELOP OVER PARTS OF SOUTHWEST OKLAHOMA AND WESTERN NORTH
TEXAS.

THE COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD AND SHOULD MOVE
THROUGH THE REMAINDER OF SOUTHEAST OKLAHOMA BY 3 AM. COLDER AIR WILL
CONTINUE TO SURGE INTO THE SOUTHERN PLAINS IN THE WAKE OF THE FRONT
OVERNIGHT. SCATTERED SHOWERS WILL ALSO CONTINUE...MAINLY OVER
WESTERN NORTH TEXAS AND SOUTHERN OKLAHOMA THROUGH THE EARLY MORNING
HOURS AS LIFT INCREASES IN ADVANCE OF AN APPROACHING UPPER LEVEL
STORM SYSTEM.

$$

II
January 28, 2010 - 303 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
303 AM CST THU JAN 28 2010

OKZ043-047-048-050>052-281015-
/O.CAN.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
COAL-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...COALGATE...TISHOMINGO...ATOKA...
MARIETTA...MADILL...DURANT
303 AM CST THU JAN 28 2010

...WINTER STORM WATCH IS CANCELLED...

RAIN AND A FEW THUNDERSTORMS WILL MOVE ACROSS SOUTHERN OKLAHOMA
TODAY. TEMPERATURES SOUTH AND EAST OF COALGATE...TISHOMINGO AND
MARIETTA ARE EXPECTED TO REMAIN ABOVE FREEZING THROUGH AT LEAST
THE MID EVENING HOUR. BY LATE TONIGHT OR EARLY FRIDAY MORNING SOME
OF THE PRECIPITATION MAY CHANGED TO LIGHT FREEZING RAIN AND SLEET.
ACCUMULATIONS OF ICE OR SLEET ARE EXPECTED TO BE LIGHT.

$$

OKZ004>031-033>038-TXZ083>085-281715-
/O.CON.KOUN.WS.W.0001.100128T1200Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
303 AM CST THU JAN 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING
TO 6 AM CST FRIDAY...

* MAIN IMPACTS: FREEZING RAIN WILL BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES DURING THE DAY THURSDAY. THE MOST
LIKELY AREA FOR SIGNIFICANT ICE ACCUMULATION IS SOUTH OF
STILLWATER... EL RENO...ALTUS...AND QUANAH WHERE 1/4 TO 1/2 INCH
OF ICE ACCUMULATION IS LIKELY. HIGHER ICE ACCUMULATIONS TO NEAR
3/4 INCH WILL BE POSSIBLE ACROSS PARTS OF SOUTHWEST AND CENTRAL
OKLAHOMA. SLEET AND SNOW WILL ALSO OCCUR OVER THE AREA
ESPECIALLY TOWARDS EVENING. FARTHER NORTH... GREATER SLEET AND SNOW
ACCUMULATIONS ARE LIKELY FROM WEST CENTRAL TO NORTH CENTRAL
OKLAHOMA WHERE 6 TO 10 INCHES OF SNOW IS EXPECTED.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT WILL HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE.
THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE IN SOME
AREAS.

&&

$$

OKZ032-039>042-044>046-TXZ086>090-281715-
/O.UPG.KOUN.WS.A.0001.100128T1200Z-100129T1200Z/
/O.NEW.KOUN.WW.Y.0003.100128T2200Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COTTON-JEFFERSON-CARTER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...WALTERS...WAURIKA...ARDMORE...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
303 AM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
6 AM CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SLEET AND FREEZING RAIN WHICH IS IN EFFECT
FROM 4 PM THIS AFTERNOON TO 6 AM CST FRIDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN LATE THIS
AFTERNOON AND TONIGHT...ESPECIALLY ACROSS WESTERN NORTH TEXAS
AND PARTS OF SOUTHWEST OKLAHOMA. ICE MAY BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES. ICE ACCUMULATIONS MAY LOCALLY REACH
1/4 INCH. SOME SLEET MAY ALSO OCCUR THURSDAY NIGHT.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL AND
COMMERCE. CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
January 28, 2010 - 320 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
320 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281100-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
320 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT EXTENDING FROM NEAR MCALESTER TO NEAR MADILL...THEN
SOUTHWESTWARD INTO NORTH TEXAS CONTINUED TO MOVE SOUTH EARLY THIS
MORNING. COLDER AIR CONTINUES TO FILTER INTO THE AREA BEHIND THE
FRONT. AT 3 AM THE FREEZING LINE HAD PUSHED SOUTHWARD TO NEAR A
CHEYENNE TO STILLWATER LINE. SCATTERED SHOWERS HAD ALSO DEVELOPED
ACROSS PARTS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS.

THE COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD AND SHOULD MOVE
THROUGH THE REMAINDER OF SOUTHEAST OKLAHOMA BY 5 AM. COLDER AIR WILL
CONTINUE TO SURGE INTO THE SOUTHERN PLAINS IN THE WAKE OF THE FRONT
OVERNIGHT. BY 5 AM THE FREEZING LINE WILL BE NEAR AN ELK CITY TO
CUSHING LINE. SHOWERS WILL CONTINUE BECOME MORE WIDESPREAD THIS
MORNING...MAINLY ACROSS WESTERN NORTH TEXAS AND SOUTHERN OKLAHOMA AS
A STRONG UPPER LEVEL STORM SYSTEM APPROACHES FROM THE SOUTHWEST.
MOST OF THE PRECIPITATION WILL FALL IN AREAS THAT ARE EXPECTED TO
REMAIN ABOVE FREEZING EARLY THIS MORNING.

$$

II
January 28, 2010 - 445 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
445 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281200-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
445 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT EXTENDED FROM NORTHWEST ARKANSAS THROUGH THE SOUTHEAST
CORNER OF OKLAHOMA THEN SOUTHWESTWARD INTO NORTH TEXAS THIS MORNING
AND WAS MOVING SOUTH. COLD AIR CONTINUED TO FILTER INTO OKLAHOMA AND
WESTERN NORTH TEXAS. TEMPERATURES AT 4 AM RANGED FROM THE UPPER 20S
IN NORTHERN OKLAHOMA TO NEAR 50 IN FAR SOUTHEAST OKLAHOMA. SCATTERED
SHOWERS ALSO CONTINUED TO DEVELOP AND MOVE NORTHWARD...MAINLY SOUTH
OF A MANGUM TO DUNCAN TO ATOKA LINE.

THE COLD FRONT WILL CONTINUE TO PUSH SOUTHWARD AND SHOULD MOVE
THROUGH THE REMAINDER OF SOUTHEAST OKLAHOMA BY ABOUT SUNRISE.
COLDER AIR WILL CONTINUE TO SURGE INTO THE SOUTHERN PLAINS IN THE
WAKE OF THE FRONT. BY 6 AM THE FREEZING LINE WILL BE NEAR AN ERICK
...TO EL RENO...TO CUSHING LINE. SHOWERS WILL CONTINUE BECOME MORE
WIDESPREAD THIS MORNING...MAINLY ACROSS WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA AS A STRONG UPPER LEVEL STORM SYSTEM APPROACHES
FROM THE SOUTHWEST. SOME AREAS OF WEST CENTRAL OKLAHOMA...INCLUDING
AREAS AROUND ELK CITY...MANGUM AND CLINTON MAY BEGIN TO SEE SOME
ICING IN THE NEXT COUPLE OF HOURS AS THE LIGHT RAIN MOVES INTO AREAS
WITH TEMPERATURES AT OR BELOW FREEZING.

$$

II
January 28, 2010 - 450 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
450 AM CST THU JAN 28 2010

.DISCUSSION...
COLD AIR AT/NEAR THE SURFACE CONTINUES TO SURGE SOUTHWARD THIS
MORNING IN ADVANCE OF UPPER LOW OVER NORTHERN BAJA/SOUTHERN
ARIZONA. RUC SURFACE TEMPERATURES LOOK REASONABLE COMPARED TO
CURRENT OBS. BY 18Z...FREEZING LINE EXTENDS FROM NEAR SEMINOLE TO
LINDSAY TO LAWTON AND QUANAH...TEXAS. STILL SOME UNCERTAINTIES WITH
REGARDS TO FREEZING RAIN AND SLEET CHANCES. SREF PROBABILITIES
FOR SLEET INCREASE SIGNIFICANTLY ACROSS WEST CENTRAL OKLAHOMA EARLY
THIS MORNING THEN EXPAND EAST DURING THE MORNING/AFTERNOON. 70%
OR GREATER LINE EXTENDS FROM CHANDLER TO OKC TO HOBART AND ALTUS
BY 18-21Z. GREATER PROBABILITIES FOR FREEZING RAIN COVERS AN AREA
ROUGHLY 30-40 MILES SOUTH OF THIS LINE.

OVERALL...MODELS HAVE A DECENT HANDLE ON PRECIP SHIELD DEVELOPING
ACROSS WEST TEXAS WITHIN DIFFLUENT FLOW ALOFT. QPF AMOUNTS WILL
BE RATHER IMPRESSIVE WITH THIS SYSTEM. MODELS HAVE BEEN CONSISTENT
WITH NEARLY AN INCH ACROSS FAR NORTHERN OKLAHOMA WITH UP TO 2
INCHES FARTHER SOUTH. RECENT WARM CONDITIONS...PRECIP RATES SHOULD
KEEP ICE ACCUMULATIONS ON TREES...POWER LINES BETWEEN 1/4 TO 1/2
INCH WITH LOCALLY HIGHER AMOUNTS POSSIBLE. RATHER BREEZY
WINDS...ESPECIALLY IN FREEZING RAIN AREAS WILL INCREASE THE
LIKELIHOOD OF POWER FAILURES.

BETTER LIFT ALONG WITH DRIER AIR AT MID LEVELS WILL REDUCE PRECIP
AMOUNTS THIS EVENING AND OVERNIGHT...WHILE WINDS WILL CONTINUE TO
BE RATHER STRONG ESPECIALLY ACROSS SOUTHERN OKLAHOMA AND NORTH
TEXAS.

SOME ACCUMULATING SNOW/SLEET WILL BE POSSIBLE FRIDAY MORNING MAINLY
ACROSS NORTH CENTRAL AND CENTRAL OKLAHOMA.

MAINLY DRY CONDITIONS ARE EXPECTED AFTER FRIDAY WITH EXCEPTION OF
CHANCE POPS EARLY NEXT WEEK. MODELS ARE SIMILAR IN PUSHIHG LONG
WAVE TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS ON MONDAY.


&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 34 22 28 13 / 100 80 70 10
HOBART OK 33 20 26 14 / 100 80 20 0
WICHITA FALLS TX 43 25 32 22 / 100 80 20 0
GAGE OK 25 13 27 6 / 100 70 40 0
PONCA CITY OK 27 19 27 6 / 100 70 70 10
DURANT OK 47 33 34 25 / 100 80 70 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR OKZ004>031-
033>038.

WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 6 AM CST
FRIDAY FOR OKZ032-039>042-044>046.

TX...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR TXZ083>085.

WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 6 AM CST
FRIDAY FOR TXZ086>090.

&&

$$
January 28, 2010 - 500 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CST THU JAN 28 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS ARE POSSIBLE IN WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA TODAY. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
A STRONG COLD FRONT PUSHED THROUGH OKLAHOMA LAST NIGHT AND EARLY
THIS MORNING. MOISTURE WILL CONTINUE TO STREAM NORTHWARD ABOVE THE
SHALLOW LAYER OF COLD AIR AS A STRONG UPPER LEVEL STORM SYSTEM MOVES
NORTHEASTWARD TOWARD THE AREA. WIDESPREAD SHOWERS AND A FEW
THUNDERSTORMS WILL DEVELOP OVER PARTS OF WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA AS THE STORM SYSTEM MOVES TOWARD THE AREA.
HOWEVER... INSTABILITY WILL BE LIMITED AND NO SEVERE STORMS ARE
EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY JAN 29.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
A MIX OF WINTER PRECIPITATION...INCLUDING SNOW...SLEET AND FREEZING
RAIN WILL IMPACT MUCH OF OKLAHOMA AND WESTERN NORTH TEXAS TODAY AND
TONIGHT AS A STRONG UPPER LEVEL STORM SYSTEM APPROACHES FROM THE
SOUTHWEST. WINTER WEATHER ADVISORIES AND WARNINGS ARE IN EFFECT.
PLEASE REFER TO THE LATEST WINTER WEATHER WARNING AND ADVISORY
PRODUCTS FOR ADDITIONAL DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON
TODAY.

$$
January 28, 2010 - 600 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
600 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281400-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
600 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT EXTENDED FROM NORTHWEST ARKANSAS THROUGH THE SOUTHEAST
CORNER OF OKLAHOMA THEN SOUTHWESTWARD INTO NORTH TEXAS THIS MORNING
AND WAS MOVING SOUTH. COLD AIR CONTINUED TO FILTER INTO OKLAHOMA AND
WESTERN NORTH TEXAS. TEMPERATURES AT 6 AM RANGED FROM THE MID 20S IN
NORTHERN OKLAHOMA TO THE 40S IN SOUTHEAST OKLAHOMA. LIGHT RAIN
CONTINUES ACROSS MUCH OF WESTERN NORTH TEXAS AND THE SOUTHERN THIRD
OF OKLAHOMA. FREEZING RAIN HAS DEVELOPED IN SOUTHWEST AND WEST
CENTRAL OKLAHOMA WHERE TEMPERATURES HAVE FALLEN FREEZING OR JUST
BELOW.

COLDER AIR WILL CONTINUE TO SURGE INTO THE SOUTHERN PLAINS IN THE
WAKE OF THE FRONT. BY 7 AM THE FREEZING LINE WILL EXTEND FROM NEAR
HOLLIS TO NORTHERN PARTS OF THE OKLAHOMA CITY AREA...TO NEAR
CHANDLER. THE AREA OF RAIN WILL CONTINUE TO EXPAND NORTHWARD TOWARD
CENTRAL OKLAHOMA. LOCATIONS FROM SOUTHWEST INTO CENTRAL
OKLAHOMA...INCLUDING AREAS AROUND HOLLIS AND MANGUM...NORTHEASTWARD
TOWARD THE OKLAHOMA CITY METRO AREA MAY BEGIN TO SEE SOME ICING IN
THE NEXT COUPLE OF HOURS AS THE LIGHT RAIN MOVES INTO AREAS WITH
TEMPERATURES AT OR BELOW FREEZING.

$$

II
January 28, 2010 - 618 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
618 AM CST THU JAN 28 2010

.AVIATION...
LARGE AREA OF RAIN WITH SOME FREEZING RAIN WILL CONTINUE TO
LIFT NORTHWARD THIS MORNING. 12Z OUN SOUNDING INDICATES RATHER
IMPRESSIVE WARM NOSE WITH +7C AROUND 875H. FREEZING RAIN
WILL IMPACT HBR/LAW/CSM/OKC/OUN/PNC MOST OF THE MORNING INTO
THE AFTERNOON WITH BETTER CHANCE OF SLEET AND SNOW ACROSS
NORTHWEST OK. SPS MAY RECEIVE A COLD RAIN UNTIL LATE THIS
AFTERNOON OR EARLY EVENING. MFVR CEILINGS WILL GRADUALLY
LOWER INTO THE IFR RANGE THIS MORNING AS THE RAIN...FREEZING
RAIN LIFTS NORTHWARD.

&&

.PREV DISCUSSION... /ISSUED 450 AM CST THU JAN 28 2010/

DISCUSSION...
COLD AIR AT/NEAR THE SURFACE CONTINUES TO SURGE SOUTHWARD THIS
MORNING IN ADVANCE OF UPPER LOW OVER NORTHERN BAJA/SOUTHERN
ARIZONA. RUC SURFACE TEMPERATURES LOOK REASONABLE COMPARED TO
CURRENT OBS. BY 18Z...FREEZING LINE EXTENDS FROM NEAR SEMINOLE TO
LINDSAY TO LAWTON AND QUANAH...TEXAS. STILL SOME UNCERTAINTIES WITH
REGARDS TO FREEZING RAIN AND SLEET CHANCES. SREF PROBABILITIES
FOR SLEET INCREASE SIGNIFICANTLY ACROSS WEST CENTRAL OKLAHOMA EARLY
THIS MORNING THEN EXPAND EAST DURING THE MORNING/AFTERNOON. 70%
OR GREATER LINE EXTENDS FROM CHANDLER TO OKC TO HOBART AND ALTUS
BY 18-21Z. GREATER PROBABILITIES FOR FREEZING RAIN COVERS AN AREA
ROUGHLY 30-40 MILES SOUTH OF THIS LINE.

OVERALL...MODELS HAVE A DECENT HANDLE ON PRECIP SHIELD DEVELOPING
ACROSS WEST TEXAS WITHIN DIFFLUENT FLOW ALOFT. QPF AMOUNTS WILL
BE RATHER IMPRESSIVE WITH THIS SYSTEM. MODELS HAVE BEEN CONSISTENT
WITH NEARLY AN INCH ACROSS FAR NORTHERN OKLAHOMA WITH UP TO 2
INCHES FARTHER SOUTH. RECENT WARM CONDITIONS...PRECIP RATES SHOULD
KEEP ICE ACCUMULATIONS ON TREES...POWER LINES BETWEEN 1/4 TO 1/2
INCH WITH LOCALLY HIGHER AMOUNTS POSSIBLE. RATHER BREEZY
WINDS...ESPECIALLY IN FREEZING RAIN AREAS WILL INCREASE THE
LIKELIHOOD OF POWER FAILURES.

BETTER LIFT ALONG WITH DRIER AIR AT MID LEVELS WILL REDUCE PRECIP
AMOUNTS THIS EVENING AND OVERNIGHT...WHILE WINDS WILL CONTINUE TO
BE RATHER STRONG ESPECIALLY ACROSS SOUTHERN OKLAHOMA AND NORTH
TEXAS.

SOME ACCUMULATING SNOW/SLEET WILL BE POSSIBLE FRIDAY MORNING MAINLY
ACROSS NORTH CENTRAL AND CENTRAL OKLAHOMA.

MAINLY DRY CONDITIONS ARE EXPECTED AFTER FRIDAY WITH EXCEPTION OF
CHANCE POPS EARLY NEXT WEEK. MODELS ARE SIMILAR IN PUSHIHG LONG
WAVE TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS ON MONDAY.


&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 34 22 28 13 / 100 80 70 10
HOBART OK 33 20 26 14 / 100 80 20 0
WICHITA FALLS TX 43 25 32 22 / 100 80 20 0
GAGE OK 25 13 27 6 / 100 70 40 0
PONCA CITY OK 27 19 27 6 / 100 70 70 10
DURANT OK 47 33 34 25 / 100 80 70 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR OKZ004>031-
033>038.

WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 6 AM CST
FRIDAY FOR OKZ032-039>042-044>046.

TX...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR TXZ083>085.

WINTER WEATHER ADVISORY FROM 4 PM THIS AFTERNOON TO 6 AM CST
FRIDAY FOR TXZ086>090.

&&

$$
January 28, 2010 - 645 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
645 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281500-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
645 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

COLD AIR CONTINUED TO FILTER INTO OKLAHOMA AND WESTERN NORTH TEXAS
IN THE WAKE OF A COLD FRONT WHICH MOVED THROUGH OVERNIGHT.
TEMPERATURES AT 645 AM RANGED FROM THE MID 20S IN NORTHERN OKLAHOMA
TO THE LOW 40S IN SOUTHEAST OKLAHOMA. LIGHT RAIN CONTINUED ACROSS
MUCH OF WESTERN NORTH TEXAS AND THE SOUTHERN THIRD OF OKLAHOMA AND
WAS MOVING NORTHWARD. FREEZING RAIN HAS DEVELOPED FROM SOUTHWEST
INTO CENTRAL OKLAHOMA WHERE TEMPERATURES HAVE FALLEN TO FREEZING OR
JUST BELOW.

COLDER AIR WILL CONTINUE TO SURGE INTO THE SOUTHERN PLAINS THIS
MORNING. BY 8 AM THE FREEZING LINE WILL EXTEND FROM QUANAH
TEXAS...TO LAWTON...TO NORMAN... TO NEAR SHAWNEE. THE AREA OF RAIN
WILL CONTINUE TO EXPAND NORTHWARD WITH PRECIPITATION EXPECTED OVER
MUCH OF THE AREA SOUTH OF AAN ARNETT TO STILLWATER LINE. LOCATIONS
FROM SOUTHWEST INTO CENTRAL OKLAHOMA...INCLUDING AREAS AROUND QUANAH
TEXAS AND ALTUS...NORTHEASTWARD THROUGH THE OKLAHOMA CITY METRO AREA
..TO AROUND PRAGUE WILL LIKELY SEE ICE ACCUMULATIONS DEVELOPING.
MOTORISTS SHOULD USE CAUTION..ESPECIALLY ON ELEVATED ROADWAYS WHICH
MAY RAPIDLY BECOME SLICK.

$$

II
January 28, 2010 - 930 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
930 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281700-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
930 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A LARGE AREA OF PRECIPITATION CONTINUED TO MOVE NORTH THIS MORNING
OVER A LARGE PART OF OKLAHOMA AND WESTERN NORTH TEXAS. THE NORTH
EDGE OF THE PRECIPITATION WAS LOCATED FROM ARNETT... TO HENNESSEY..
AND TO CHANDLER OKLAHOMA. AT THE SAME TIME... BELOW FREEZING SURFACE
TEMPERATURES WERE FILTERING SOUTH... AND THE LINE WAS NOW LOCATED
FROM NEAR BENJAMIN TEXAS... TO LAWTON... TO PAULS VALLEY... AND
HOLDENVILLE OKLAHOMA. FREEZING RAIN HAD DEVELOPED FROM SOUTHWEST
INTO CENTRAL OKLAHOMA... AND ICE ACCUMULATIONS OF AN EIGHTH TO A
QUARTER INCH OF ICE HAVE BEEN REPORTED. LIGHT TO MODERATE FREEZING
RAIN WILL CONTINUE THROUGH THE AFTERNOON AND EXPAND INTO NORTHERN
OKLAHOMA. SLEET MAY BEGIN TO MIX IN WITH THE FREEZING RAIN BY THE
AFTERNOON... WHICH MAY HELP TO LESSEN ICE BUILD UP ON TREES AND
POWER LINES.

FARTHER SOUTH INTO SOUTH CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS...
ADDITIONAL FREEZING RAIN WILL DEVELOP BY LATE MORNING... AS THE
FREEZING LINE ADVANCES SOUTHWARD. RESIDENTS CAN EXPECT SLICK SPOTS
ON AREA ROADWAYS... AS WELL AS ICE BUILD UP ON TREES AND POWER
LINES.

MOTORISTS OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON
ELEVATED ROADWAYS WHICH MAY RAPIDLY BECOME SLICK. POWER OUTAGES ARE
ALSO LIKELY OVER A LARGE AREA.

$$

TY
January 28, 2010 - 939 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
939 AM CST THU JAN 28 2010

.UPDATE...
WILL BE EXPANDING THE WINTER STORM WARNING FARTHER SOUTH AS COLD
LOW-LEVEL AIR CONTINUES TO SPREAD SOUTH... WHICH WILL LEAD TO
CHANGE TO FREEZING RAIN LATE THIS MORNING OR THIS AFTERNOON ACROSS
AREAS JUST SOUTH OF THE CURRENT WARNING. AS COLD AIR CONTINUES TO
SPREAD SOUTH AND DEEPEN... WE ARE GETTING REPORTS OF MIX OR
CHANGE-OVER TO SLEET IN HOBART AND THE NORTHWEST OKC METRO. DRY
LOW-LEVEL AIR IS FILTERING INTO THE AREA /DEWPOINT DEPRESSIONS
ARE 5 TO 15 DEGREES ACROSS MUCH OF CENTRAL AND NORTHERN OKLAHOMA
IN THE COOL AIRMASS/... WHICH SHOULD CONTINUE TO COOL THE NEAR-
SURFACE COLD LAYER AND MAY ALLOW MORE AREAS TO MIX WITH OR CHANGE
TO SLEET THIS AFTERNOON AS OPPOSED TO FREEZING RAIN.

WE ARE PLANNING TO LAUNCH 3-HOURLY SOUNDINGS TODAY TO ASSESS THE
THERMODYNAMICS OF THE AIRMASS. PARTIAL DATA FROM THE 15Z SOUNDING
HAS ALREADY BEEN SENT. .26.

&&

.PREV DISCUSSION... /ISSUED 618 AM CST THU JAN 28 2010/

AVIATION...
LARGE AREA OF RAIN WITH SOME FREEZING RAIN WILL CONTINUE TO
LIFT NORTHWARD THIS MORNING. 12Z OUN SOUNDING INDICATES RATHER
IMPRESSIVE WARM NOSE WITH +7C AROUND 875H. FREEZING RAIN
WILL IMPACT HBR/LAW/CSM/OKC/OUN/PNC MOST OF THE MORNING INTO
THE AFTERNOON WITH BETTER CHANCE OF SLEET AND SNOW ACROSS
NORTHWEST OK. SPS MAY RECEIVE A COLD RAIN UNTIL LATE THIS
AFTERNOON OR EARLY EVENING. MFVR CEILINGS WILL GRADUALLY
LOWER INTO THE IFR RANGE THIS MORNING AS THE RAIN...FREEZING
RAIN LIFTS NORTHWARD.


PREV DISCUSSION... /ISSUED 450 AM CST THU JAN 28 2010/

DISCUSSION...
COLD AIR AT/NEAR THE SURFACE CONTINUES TO SURGE SOUTHWARD THIS
MORNING IN ADVANCE OF UPPER LOW OVER NORTHERN BAJA/SOUTHERN
ARIZONA. RUC SURFACE TEMPERATURES LOOK REASONABLE COMPARED TO
CURRENT OBS. BY 18Z...FREEZING LINE EXTENDS FROM NEAR SEMINOLE TO
LINDSAY TO LAWTON AND QUANAH...TEXAS. STILL SOME UNCERTAINTIES WITH
REGARDS TO FREEZING RAIN AND SLEET CHANCES. SREF PROBABILITIES
FOR SLEET INCREASE SIGNIFICANTLY ACROSS WEST CENTRAL OKLAHOMA EARLY
THIS MORNING THEN EXPAND EAST DURING THE MORNING/AFTERNOON. 70%
OR GREATER LINE EXTENDS FROM CHANDLER TO OKC TO HOBART AND ALTUS
BY 18-21Z. GREATER PROBABILITIES FOR FREEZING RAIN COVERS AN AREA
ROUGHLY 30-40 MILES SOUTH OF THIS LINE.

OVERALL...MODELS HAVE A DECENT HANDLE ON PRECIP SHIELD DEVELOPING
ACROSS WEST TEXAS WITHIN DIFFLUENT FLOW ALOFT. QPF AMOUNTS WILL
BE RATHER IMPRESSIVE WITH THIS SYSTEM. MODELS HAVE BEEN CONSISTENT
WITH NEARLY AN INCH ACROSS FAR NORTHERN OKLAHOMA WITH UP TO 2
INCHES FARTHER SOUTH. RECENT WARM CONDITIONS...PRECIP RATES SHOULD
KEEP ICE ACCUMULATIONS ON TREES...POWER LINES BETWEEN 1/4 TO 1/2
INCH WITH LOCALLY HIGHER AMOUNTS POSSIBLE. RATHER BREEZY
WINDS...ESPECIALLY IN FREEZING RAIN AREAS WILL INCREASE THE
LIKELIHOOD OF POWER FAILURES.

BETTER LIFT ALONG WITH DRIER AIR AT MID LEVELS WILL REDUCE PRECIP
AMOUNTS THIS EVENING AND OVERNIGHT...WHILE WINDS WILL CONTINUE TO
BE RATHER STRONG ESPECIALLY ACROSS SOUTHERN OKLAHOMA AND NORTH
TEXAS.

SOME ACCUMULATING SNOW/SLEET WILL BE POSSIBLE FRIDAY MORNING MAINLY
ACROSS NORTH CENTRAL AND CENTRAL OKLAHOMA.

MAINLY DRY CONDITIONS ARE EXPECTED AFTER FRIDAY WITH EXCEPTION OF
CHANCE POPS EARLY NEXT WEEK. MODELS ARE SIMILAR IN PUSHIHG LONG
WAVE TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS ON MONDAY.


&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 34 22 28 13 / 100 80 70 10
HOBART OK 33 20 26 14 / 100 80 20 0
WICHITA FALLS TX 43 25 32 22 / 100 80 20 0
GAGE OK 25 13 27 6 / 100 70 40 0
PONCA CITY OK 27 19 27 6 / 100 70 70 10
DURANT OK 47 33 34 25 / 100 80 70 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 AM CST FRIDAY FOR OKZ050-051.

TX...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR TXZ083>088.

WINTER WEATHER ADVISORY UNTIL 6 AM CST FRIDAY FOR TXZ089-090.

&&

$$
January 28, 2010 - 956 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
956 AM CST THU JAN 28 2010

OKZ032-039>042-044>046-TXZ086>088-290000-
/O.UPG.KOUN.WW.Y.0003.100128T2200Z-100129T1200Z/
/O.EXA.KOUN.WS.W.0001.000000T0000Z-100129T1200Z/
HUGHES-STEPHENS-GARVIN-MURRAY-PONTOTOC-COTTON-JEFFERSON-CARTER-
WICHITA-KNOX-BAYLOR-
INCLUDING THE CITIES OF...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...WALTERS...WAURIKA...ARDMORE...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR
956 AM CST THU JAN 28 2010

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR FREEZING RAIN AND SLEET...WHICH IS IN EFFECT UNTIL 6
AM CST FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN THIS AFTERNOON
AND TONIGHT ACROSS PORTIONS OF WESTERN NORTH TEXAS AND SOUTHERN
AND EASTERN OKLAHOMA. ICE MAY BEGIN TO ACCUMULATE ON POWER LINES
AND ELEVATED SURFACES. ICE ACCUMULATIONS MAY 1/4 TO 1/2 INCH.
THE FREEZING RAIN WILL MIX WITH SLEET THIS AFTERNOON AND THIS
EVENING.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF ICE OR SLEET
ARE EXPECTED WHICH WILL MAKE TRAVEL HAZARDOUS. STRONG WINDS WILL
ALSO OCCUR.

&&

$$

OKZ043-047-290000-
/O.EXA.KOUN.WS.W.0001.000000T0000Z-100129T1200Z/
COAL-JOHNSTON-
INCLUDING THE CITIES OF...COALGATE...TISHOMINGO
956 AM CST THU JAN 28 2010

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR FREEZING RAIN AND SLEET...WHICH IS IN EFFECT UNTIL 6
AM CST FRIDAY.

* OTHER IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN THIS AFTERNOON
ACROSS SOUTHERN OKLAHOMA AS COLD AIR MOVES INTO THE AREA AND
TEMPERATURES FALL TO BELOW FREEZING. FREEZING RAIN WILL MIX WITH
SLEET AT TIMES THIS AFTERNOON AND EVENING.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF ICE OR SLEET
ARE EXPECTED WHICH WILL MAKE TRAVEL HAZARDOUS. STRONG WINDS WILL
ALSO OCCUR.

&&

$$

OKZ004>031-033>038-TXZ083>085-290000-
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1200Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-HARDEMAN-FOARD-WILBARGER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...LAWTON...QUANAH...
CHILLICOTHE...CROWELL...VERNON
956 AM CST THU JAN 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY.

* MAIN IMPACTS: WIDESPREAD WINTER PRECIPITATION WILL OCCUR WITH
SNOW... FREEZING RAIN AND SLEET. SNOW WILL BE MOST LIKELY ACROSS
NORTHWESTERN OKLAHOMA WHERE SNOWFALL ACCUMULATIONS OVER 6 INCHES
WILL BE POSSIBLE IN SOME AREAS. ELSEWHERE... FREEZING RAIN WILL
CREATE ICE ACCUMULATIONS OF 1/4 TO 1/2 INCH IS LIKELY WITH SOME
LOCAL ACCUMULATIONS OF 3/4 INCH. FREEZING RAIN WILL MIX WITH
SLEET ACROSS MUCH OF THE AREA THIS AFTERNOON AND EVENING.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT WILL HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...ICE AND
SLEET ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE IN SOME AREAS.

&&

$$

OKZ050-051-290000-
/O.EXB.KOUN.WW.Y.0003.100128T1800Z-100129T1200Z/
LOVE-MARSHALL-
INCLUDING THE CITIES OF...MARIETTA...MADILL
956 AM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN AND SLEET...WHICH IS IN EFFECT
UNTIL 6 AM CST FRIDAY.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN THIS AFTERNOON
AND TONIGHT ACROSS SOUTH CENTRAL OKLAHOMA. ICE MAY BEGIN TO
ACCUMULATE ON POWER LINES AND ELEVATED SURFACES. ICE
ACCUMULATIONS MAY LOCALLY REACH 1/4 INCH. THE FREEZING RAIN MAY
MIX WITH SLEET AT TIMES.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
SLEET WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

TXZ089-090-290000-
/O.EXT.KOUN.WW.Y.0003.100128T1800Z-100129T1200Z/
ARCHER-CLAY-
INCLUDING THE CITIES OF...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
956 AM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM CST FRIDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 6 AM CST
FRIDAY.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN LATE THIS
AFTERNOON AND TONIGHT ACROSS WESTERN NORTH TEXAS. ICE MAY BEGIN
TO ACCUMULATE ON POWER LINES AND ELEVATED SURFACES. ICE
ACCUMULATIONS MAY LOCALLY REACH 1/4 INCH. THE FREEZING RAIN MAY
MIX WITH SLEET AT TIMES.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

.26.
January 28, 2010 - 1035 AM CST - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1035 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-281800-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1035 AM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

WIDESPREAD FREEZING RAIN... WITH EMBEDDED SLEET CONTINUED TO MOVE
NORTH THROUGH WESTERN... CENTRAL... AND NORTHERN OKLAHOMA... AND
WILL SPREAD FURTHER SOUTH INTO WESTERN NORTH TEXAS AND SOUTHERN
OKLAHOMA THIS AFTERNOON.

A STRONG STORM SYSTEM NOW LOCATED OVER SOUTHEAST ARIZONA WAS SLOWLY
MOVING TOWARD THE EAST. A LARGE AREA OF PRECIPITATION COVERED MUCH
OF EASTERN NEW MEXICO... WESTERN AND NORTHERN TEXAS... AND MUCH OF
OKLAHOMA. AT THE SAME TIME... BELOW FREEZING TEMPERATURES WERE
FILTERING SOUTH THROUGH OKLAHOMA... AND THE LINE WAS NOW LOCATED
FROM NEAR BENJAMIN TEXAS... TO DUNCAN... AND TO NORTHERN COAL
COUNTY. NORTH OF THIS LINE.... LIGHT TO MODERATE FREEZING RAIN WAS
OCCURRING. ICE ACCUMULATIONS OF AN EIGHTH TO ALMOST A HALF OF AN
INCH HAVE BEEN REPORTED ON TREES AND POWER LINES. SOME SLEET HAS
ALSO BEEN REPORTED AT TIMES.

TEMPERATURES OVER SOUTH CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS
WERE CURRENTLY IN THE MIDDLE 30S. BY MID AFTERNOON... THE FREEZING
LINE IS EXPECTED TO PUSH THROUGH WICHITA FALLS TEXAS... AND THROUGH
WAURIKA AND COALGATE OKLAHOMA. THE FREEZING RAIN WILL IMMEDIATELY
BEGIN TO ACCUMULATE ON ELEVATED SURFACES.

MOTORISTS OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON
ELEVATED ROADWAYS WHICH MAY RAPIDLY BECOME SLICK. POWER OUTAGES ARE
ALSO LIKELY OVER A LARGE AREA.

$$

TY
January 28, 2010 - 1143 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1143 AM CST THU JAN 28 2010

.AVIATION...
18Z TAFS...THOUGH TIMING OF CIG/VSBY CHANGES AND PRECIP TYPE CHANGES
IS UNCERTAIN... THE GENERAL IDEA OF DEVELOPING WIDESPREAD IFR
VISIBILITY WITH FROZEN PRECIP AFFECTING ALL TERMINALS THIS
AFTERNOON AND EVENING COMES WITH HIGH CONFIDENCE. CONVECTIVE
ELEMENTS MAY BRING SOME LIGHTNING NEAR KSPS/KLAW OR EVEN A BIT
FURTHER NORTH...BUT THIS WILL BE SPOTTY. LIGHT PRECIP MAY CONTINUE
ACROSS NORTHERN AND EVEN CENTRAL OK INTO TOMORROW MORNING.

TAYLOR

&&

.PREV DISCUSSION... /ISSUED 939 AM CST THU JAN 28 2010/

UPDATE...
WILL BE EXPANDING THE WINTER STORM WARNING FARTHER SOUTH AS COLD
LOW-LEVEL AIR CONTINUES TO SPREAD SOUTH... WHICH WILL LEAD TO
CHANGE TO FREEZING RAIN LATE THIS MORNING OR THIS AFTERNOON ACROSS
AREAS JUST SOUTH OF THE CURRENT WARNING. AS COLD AIR CONTINUES TO
SPREAD SOUTH AND DEEPEN... WE ARE GETTING REPORTS OF MIX OR
CHANGE-OVER TO SLEET IN HOBART AND THE NORTHWEST OKC METRO. DRY
LOW-LEVEL AIR IS FILTERING INTO THE AREA /DEWPOINT DEPRESSIONS
ARE 5 TO 15 DEGREES ACROSS MUCH OF CENTRAL AND NORTHERN OKLAHOMA
IN THE COOL AIRMASS/... WHICH SHOULD CONTINUE TO COOL THE NEAR-
SURFACE COLD LAYER AND MAY ALLOW MORE AREAS TO MIX WITH OR CHANGE
TO SLEET THIS AFTERNOON AS OPPOSED TO FREEZING RAIN.

WE ARE PLANNING TO LAUNCH 3-HOURLY SOUNDINGS TODAY TO ASSESS THE
THERMODYNAMICS OF THE AIRMASS. PARTIAL DATA FROM THE 15Z SOUNDING
HAS ALREADY BEEN SENT. .26.

PREV DISCUSSION... /ISSUED 618 AM CST THU JAN 28 2010/

AVIATION...
LARGE AREA OF RAIN WITH SOME FREEZING RAIN WILL CONTINUE TO
LIFT NORTHWARD THIS MORNING. 12Z OUN SOUNDING INDICATES RATHER
IMPRESSIVE WARM NOSE WITH +7C AROUND 875H. FREEZING RAIN
WILL IMPACT HBR/LAW/CSM/OKC/OUN/PNC MOST OF THE MORNING INTO
THE AFTERNOON WITH BETTER CHANCE OF SLEET AND SNOW ACROSS
NORTHWEST OK. SPS MAY RECEIVE A COLD RAIN UNTIL LATE THIS
AFTERNOON OR EARLY EVENING. MFVR CEILINGS WILL GRADUALLY
LOWER INTO THE IFR RANGE THIS MORNING AS THE RAIN...FREEZING
RAIN LIFTS NORTHWARD.


PREV DISCUSSION... /ISSUED 450 AM CST THU JAN 28 2010/

DISCUSSION...
COLD AIR AT/NEAR THE SURFACE CONTINUES TO SURGE SOUTHWARD THIS
MORNING IN ADVANCE OF UPPER LOW OVER NORTHERN BAJA/SOUTHERN
ARIZONA. RUC SURFACE TEMPERATURES LOOK REASONABLE COMPARED TO
CURRENT OBS. BY 18Z...FREEZING LINE EXTENDS FROM NEAR SEMINOLE TO
LINDSAY TO LAWTON AND QUANAH...TEXAS. STILL SOME UNCERTAINTIES WITH
REGARDS TO FREEZING RAIN AND SLEET CHANCES. SREF PROBABILITIES
FOR SLEET INCREASE SIGNIFICANTLY ACROSS WEST CENTRAL OKLAHOMA EARLY
THIS MORNING THEN EXPAND EAST DURING THE MORNING/AFTERNOON. 70%
OR GREATER LINE EXTENDS FROM CHANDLER TO OKC TO HOBART AND ALTUS
BY 18-21Z. GREATER PROBABILITIES FOR FREEZING RAIN COVERS AN AREA
ROUGHLY 30-40 MILES SOUTH OF THIS LINE.

OVERALL...MODELS HAVE A DECENT HANDLE ON PRECIP SHIELD DEVELOPING
ACROSS WEST TEXAS WITHIN DIFFLUENT FLOW ALOFT. QPF AMOUNTS WILL
BE RATHER IMPRESSIVE WITH THIS SYSTEM. MODELS HAVE BEEN CONSISTENT
WITH NEARLY AN INCH ACROSS FAR NORTHERN OKLAHOMA WITH UP TO 2
INCHES FARTHER SOUTH. RECENT WARM CONDITIONS...PRECIP RATES SHOULD
KEEP ICE ACCUMULATIONS ON TREES...POWER LINES BETWEEN 1/4 TO 1/2
INCH WITH LOCALLY HIGHER AMOUNTS POSSIBLE. RATHER BREEZY
WINDS...ESPECIALLY IN FREEZING RAIN AREAS WILL INCREASE THE
LIKELIHOOD OF POWER FAILURES.

BETTER LIFT ALONG WITH DRIER AIR AT MID LEVELS WILL REDUCE PRECIP
AMOUNTS THIS EVENING AND OVERNIGHT...WHILE WINDS WILL CONTINUE TO
BE RATHER STRONG ESPECIALLY ACROSS SOUTHERN OKLAHOMA AND NORTH
TEXAS.

SOME ACCUMULATING SNOW/SLEET WILL BE POSSIBLE FRIDAY MORNING MAINLY
ACROSS NORTH CENTRAL AND CENTRAL OKLAHOMA.

MAINLY DRY CONDITIONS ARE EXPECTED AFTER FRIDAY WITH EXCEPTION OF
CHANCE POPS EARLY NEXT WEEK. MODELS ARE SIMILAR IN PUSHIHG LONG
WAVE TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS ON MONDAY.


&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 31 22 28 13 / 100 80 70 10
HOBART OK 31 20 26 14 / 100 80 20 0
WICHITA FALLS TX 39 25 32 22 / 100 80 20 0
GAGE OK 26 13 27 6 / 100 70 40 0
PONCA CITY OK 30 19 27 6 / 100 70 70 10
DURANT OK 43 33 34 25 / 100 80 70 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 AM CST FRIDAY FOR OKZ050-051.

TX...WINTER STORM WARNING UNTIL 6 AM CST FRIDAY FOR TXZ083>088.

WINTER WEATHER ADVISORY UNTIL 6 AM CST FRIDAY FOR TXZ089-090.

&&

$$

26/03/03
January 28, 2010 - 1148 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1148 AM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-291200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1148 AM CST THU JAN 28 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS ARE LIKELY ACROSS WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA TODAY. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
A SIGNIFICANT WINTER STORM WILL AFFECT THE AREA TODAY AND TONIGHT.
ALTHOUGH ISOLATED THUNDERSTORMS ARE EXPECTED ACROSS SOUTHERN
OKLAHOMA AND NORTH TEXAS... NO SEVERE THUNDERSTORMS ARE EXPECTED.
THE MOST SIGNIFICANT HAZARDS WILL BE FROM THE WINTER PRECIPITATION
ACROSS THE AREA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY JAN 29.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
A MIX OF WINTER PRECIPITATION...INCLUDING SNOW...SLEET AND FREEZING
RAIN WILL IMPACT MUCH OF OKLAHOMA AND WESTERN NORTH TEXAS TODAY AND
TONIGHT AS A STRONG UPPER LEVEL STORM SYSTEM APPROACHES FROM THE
SOUTHWEST. THESE CONDITIONS WILL MAKE TRAVEL HAZARDOUS ACROSS THE
AREA. PLEASE REFER TO THE LATEST WINTER WEATHER WARNING AND ADVISORY
PRODUCTS FOR ADDITIONAL DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.

OTHER HAZARDOUS WEATHER...
SNOW FROM THIS WINTER STORM WILL LINGER INTO FRIDAY MORNING ACROSS
EASTERN SECTIONS OF THE AREA.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
FRIDAY JANUARY 29.

$$
January 28, 2010 - 1248 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1248 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-282000-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1248 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

WIDESPREAD LIGHT TO MODERATE FREEZING RAIN WILL PERSIST ACROSS
WESTERN AND CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS THROUGH THE
AFTERNOON. AT THE CURRENT TIME... THE SOUTHWARD MOVING FREEZING
LINE EXTENDED JUST SOUTH OF THE RED RIVER FROM GOODLETT... TO
BURKBURNETT... TO WAURIKA... AND TO HOLDENVILLE IN SOUTHEASTERN
OKLAHOMA. NORTH OF THE FREEZING LINE... WARM AIR ALOFT WILL
CONTINUE TO PRODUCE LIQUID PRECIPITATION ACROSS THE AREA. THE
FRIGID AIR AT THE SURFACE WILL CONTINUE TO FREEZE THE LIQUID
PRECIPITATION ON GROUND SURFACES. A FEW AREAS MAY ALSO SEE SOME
EMBEDDED SLEET... ESPECIALLY ACROSS THE NORTHERN HALF OF OKLAHOMA.
THE AIR ALOFT ACROSS FAR NORTHWESTERN HAD ALREADY COOLED BELOW
FREEZING... AS LIGHT SNOW HAD BEEN REPORTED AT BUFFALO.

MOTORISTS OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON
ELEVATED ROADWAYS WHICH MAY RAPIDLY BECOME SLICK. POWER OUTAGES ARE
ALSO LIKELY OVER A LARGE AREA.

$$

TY
January 28, 2010 - 1252 PM CST - Significant Weather Advisory Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1252 PM CST THU JAN 28 2010

OKZ021-022-033>038-TXZ083-085-282000-
BECKHAM OK-WASHITA OK-JACKSON OK-KIOWA OK-GREER OK-TILLMAN OK-
COMANCHE OK-HARMON OK-HARDEMAN TX-WILBARGER TX-
1252 PM CST THU JAN 28 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR BECKHAM...COMANCHE...
GREER...HARDEMAN...HARMON...JACKSON...KIOWA...TILLMAN...WASHITA AND
WILBARGER COUNTIES.

AT 1250 PM CST...A LARGE AREA OF MODERATE TO HEAVY PRECIPITATION HAS
DEVELOPED ACROSS PORTIONS OF SOUTHWEST OKLAHOMA AND WESTERN NORTH
TEXAS. AS THIS PRECIPITATION SPREADS NORTH OVER AREAS WHERE
TEMPERATURES HAVE FALLEN BELOW FREEZING... MODERATE TO HEAVY
FREEZING RAIN WILL OCCUR CREATING THE POTENTIAL FOR SIGNIFICANT
ICING TO OCCUR EARLY THIS AFTERNOON ACROSS PORTIONS OF SOUTHWEST
OKLAHOMA AND WESTERN NORTH TEXAS.

$$

LAT...LON 3540 10000 3542 9957 3549 9955 3548 9936
3547 9935 3545 9872 3428 9865 3422 9998



.26.
January 28, 2010 - 206 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
206 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-282200-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
206 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A DEEP LOW PRESSURE CENTER ACROSS FAR WESTERN OKLAHOMA... COUPLED
WITH AN UPPER LOW DIGGING ACROSS THE SOUTHWESTERN UNITED STATES...
WITH CONTINUE TO BRING A WINTER STORM THROUGH TONIGHT ACROSS WESTERN
AND CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS. FAR NORTHWESTERN
OKLAHOMA HAD ALREADY CHANGED OVER TO SNOW. HOWEVER... WARM AIR
ALOFT ACROSS THE REST OF OUR REGION WILL MAINTAIN THE PRECIPITATION
AS A LIQUID... PRODUCING FREEZING RAIN WITH SOME EMBEDDED SLEET AT
THE SURFACE. THE FREEZING LINE... CURRENTLY EXTENDING ACROSS
WESTERN NORTH TEXAS THROUGH SOUTHEASTERN OKLAHOMA... WILL CONTINUE
TO MOVE SOUTHWARD. ICE SHOULD CONTINUE TO FORM ON SURFACES.
MOTORISTS OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON
ELEVATED ROADWAYS WHICH ARE RAPIDLY BECOMING SLICK. POWER OUTAGES
ARE ALSO LIKELY OVER A LARGE AREA.

NORTHWESTERN OKLAHOMA WILL GRADUALLY CHANGE OVER TO SNOW THROUGH
MIDNIGHT. THE REST OF THE REGION WILL MAINTAIN A WINTERY MIXTURE OF
FREEZING RAIN AND SLEET.

$$
January 28, 2010 - 219 PM CST - Significant Weather Advisory Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
219 PM CST THU JAN 28 2010

TXZ089-090-282045-
CLAY TX-ARCHER TX-
219 PM CST THU JAN 28 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR ARCHER AND CLAY COUNTIES.

AT 218 PM CST...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 13
MILES WEST OF ARCHER CITY TO 14 MILES SOUTH OF ARCHER CITY...MOVING
NORTHEAST AT 50 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH MAY OCCUR WITH THIS LINE OF STORMS.

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

$$

LAT...LON 3358 9885 3384 9846 3384 9842 3387 9842
3389 9839 3346 9798 3347 9840 3341 9841
3339 9855 3339 9863


CMS
January 28, 2010 - 220 PM CST - Warning Decision Update Jump To Top 
AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
220 PM CST THU JAN 28 2010

...WARNING DECISION UPDATE...

THIS WARNING DECISION UPDATE CONCERNS CENTRAL AND SOUTHWEST OKLAHOMA.

FAST ANIMATIONS OF KFDR REFLECTIVITY DATA AND STORM RELATIVE
VELOCITY SUGGEST A MESOSCALE CONVECTIVE VORTICITY MAXIMA WAS
FORMING ABOUT 50 MILES SOUTH OF WICHITA FALLS. THIS CIRCULATION WAS
ASSOCIATED WITH THE NORTHERN EXTENT OF THE CONVECTIVE LINE THAT
EXTENDS INTO CENTRAL TEXAS.

IF THIS EVOLUTION CONTINUES IT WILL HELP TO ENHANCE VERTICAL MOTION
AND PRECIPITATION RATES FROM SOUTHWEST OKLAHOMA INTO THEN INTO
CENTRAL OKLAHOMA OVER THE NEXT FEW HOURS. THE RESULT WOULD BE AN
INCREASE IN GLAZING RATES.

$$
-
January 28, 2010 - 251 PM CST - Warning decision UpdateJump To Top 
AREA WEATHER UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
251 PM CST THU JAN 28 2010

...WARNING DECISION UPDATE...

THIS WARNING DECISION UPDATE CONCERNS CENTRAL AND SOUTHWEST OKLAHOMA.

SPECIAL SOUNDING BALLOON WAS RELEASED A FEW MINUTES AGO.
PRELIMINARY DATA SHOW WARM NOSE HAS COOLED A FEW DEGREES SINCE 18Z.
THIS MAY BE IN PART FROM THE ENHANCED VERTICAL MOTION OCCURRING IN
THE NORTHEAST QUADRANT OF THE PREVIOUSLY DESCRIBED MESOCALE
CONVECTIVE VORTICITY CENTER NEAR WICHITA FALLS.

WHILE PRECIPITATION RATES WILL BE INCREASING...THE OBSERVED COOLING
MAY BE ENOUGH TO CHANGE MANY AREAS OVER TO SLEET OR AT LEAST
PARTIALLY TO SLEET. EITHER WAY...THAT WOULD TEND TO ADVERSELY
IMPACT ROADS BUT ALSO HELP MITIGATE GLAZING IN SOME AREAS.

$$
January 28, 2010 - 315 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
315 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290000-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
315 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A DEEP LOW PRESSURE CENTER ACROSS FAR WESTERN OKLAHOMA... COUPLED
WITH AN UPPER LOW DIGGING ACROSS THE SOUTHWESTERN UNITED STATES...
WITH CONTINUE TO BRING A WINTER STORM THROUGH TONIGHT ACROSS WESTERN
AND CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS. FAR NORTHWESTERN
OKLAHOMA HAD ALREADY CHANGED OVER TO SNOW. HOWEVER... WARM AIR
ALOFT ACROSS THE REST OF OUR REGION WILL MAINTAIN THE PRECIPITATION
AS A LIQUID... PRODUCING FREEZING RAIN WITH SOME EMBEDDED SLEET AT
THE SURFACE. THE FREEZING LINE... CURRENTLY EXTENDING ACROSS
WESTERN NORTH TEXAS THROUGH SOUTHEASTERN OKLAHOMA... WILL CONTINUE
TO MOVE SOUTHWARD. ICE SHOULD CONTINUE TO FORM ON SURFACES.
MOTORISTS OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON
ELEVATED ROADWAYS WHICH ARE RAPIDLY BECOMING SLICK. POWER OUTAGES
ARE ALSO LIKELY OVER A LARGE AREA.

NORTHWESTERN OKLAHOMA WILL GRADUALLY CHANGE OVER TO SNOW THROUGH
MIDNIGHT. THE REST OF THE REGION WILL MAINTAIN A WINTERY MIXTURE OF
FREEZING RAIN AND SLEET.

$$
January 28, 2010 - 314 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
314 PM CST THU JAN 28 2010

.DISCUSSION...
WIDESPREAD PRECIPITATION CONTINUES ACROSS THE CWA IN ASSOCIATION
WITH A ROBUST LOW PRESSURE CIRCULATION CENTERED OVER SRN NEW
MEXICO. THE REGIONAL RADAR MOSAIC SHOWS A DRY SLOT MOVING TOWARD
WESTERN NORTH TEXAS...WHICH BY LINEAR EXTRAPOLATION WOULD REACH
THE OKC METRO AREA BY LATE THIS EVENING. WHILE WE ARE NOT
EXPECTING THE PRECIP TO COMPLETELY SHUT OFF BY THEN...SHORT RANGE
MODELS DO INDICATE A DECREASE IN INTENSITY OVER MOST OF THE CWA BY
MIDNIGHT. UNTIL THEN...PER THE EARLIER WARNING DECISION UPDATE AND
21Z SPECIAL OUN SOUNDING THE WARM NOSE ABOVE THE LOWER LEVEL COLD
AIR HAS COOLED A FEW DEGREES IN THE PAST THREE HOURS.
PRECIPITATION RATES OVER SOUTH CENTRAL AND CENTRAL OK SHOULD
INCREASE WITH TIME LATE THIS AFTERNOON...BUT THE COOLING ALOFT MAY
ALLOW SOME AREAS TO CHANGE FROM FREEZING RAIN TO SLEET...OR AT
LEAST A MIX.

THE SNOW OVER NORTHERN PORTIONS OF OKLAHOMA MUST NOT
BE FORGOTTEN...WITH TOTAL ACCUMULATIONS OF 6 TO 10 INCHES
EXPECTED. NO MATTER WHAT...TRAVEL CONDITIONS SHOULD CONTINUE TO
DETERIORATE WITH AT LEAST LIGHT ICE ACCUMULATION ON EXPOSED
SURFACES. THE WINTER STORM WARNING HAS BEEN EXPANDED SOUTHWARD BY
A ROW OF COUNTIES ACCORDING TO THE CURRENT POSITION OF THE
FREEZING LINE...WITH A WINTER WEATHER ADVISORY ADDED TO ALL
COUNTIES SOUTHEAST OF THE WARNING. THE WARNING MAY BE DOWNGRADED
TO AN ADVISORY BEFORE SUNRISE TOMORROW DEPENDING ON THE DECREASE
IN PRECIPITIATION.

MANY LOCATIONS WILL NOT SEE TEMPERATURES GET MUCH ABOVE FREEZING
EVEN DURING THE AFTERNOON THROUGH SATURDAY. TEMPERATURES WILL WARM
BACK INTO THE 40S AND 50S AREA WIDE EARLY NEXT WEEK. A CHANCE OF
RAIN OR SOME OVERNIGHT LIGHT SNOW FROM MONDAY INTO TUESDAY HAS
BEEN RETAINED...WITH NO CHANGES MADE TO THE EXTENDED FORECAST.


&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 24 27 15 31 / 100 60 20 0
HOBART OK 21 24 14 29 / 80 30 0 0
WICHITA FALLS TX 27 31 18 32 / 80 50 10 0
GAGE OK 15 25 6 36 / 90 30 0 0
PONCA CITY OK 21 26 10 29 / 100 70 20 0
DURANT OK 34 35 21 34 / 100 80 10 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL NOON CST FRIDAY FOR OKZ048-050>052.

TX...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR TXZ083>090.

&&

$$

26/03
TAYLOR
January 28, 2010 - 327 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
327 PM CST THU JAN 28 2010

TXZ089-090-290530-
/O.UPG.KOUN.WW.Y.0003.000000T0000Z-100129T1200Z/
/O.EXB.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
ARCHER-CLAY-
INCLUDING THE CITIES OF...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
327 PM CST THU JAN 28 2010

...WINTER STORM WARNING IN EFFECT UNTIL NOON CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR FREEZING RAIN AND SLEET...WHICH IS IN EFFECT UNTIL NOON
CST FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN LATE THIS
AFTERNOON AND TONIGHT ACROSS WESTERN NORTH TEXAS. ICE MAY
BEGIN TO ACCUMULATE ON POWER LINES AND ELEVATED SURFACES. ICE
ACCUMULATIONS MAY LOCALLY REACH 1/4 INCH. THE FREEZING RAIN
MAY MIX WITH SLEET AT TIMES.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 20 TO 25 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER STORM WARNING MEANS THAT SIGNIFICANT AMOUNTS OF ICE
AND SLEET ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE IN SOME AREAS.

&&

$$

OKZ004>047-TXZ083>088-290530-
/O.EXT.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...QUANAH...CHILLICOTHE...
CROWELL...VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR
327 PM CST THU JAN 28 2010

...WINTER STORM WARNING NOW IN EFFECT UNTIL NOON CST FRIDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL NOON CST FRIDAY.

* MAIN IMPACTS: WIDESPREAD WINTER PRECIPITATION WILL OCCUR WITH
SNOW... FREEZING RAIN AND SLEET. SNOW WILL BE MOST LIKELY ACROSS
NORTHWESTERN OKLAHOMA WHERE SNOWFALL ACCUMULATIONS OVER 6 INCHES
WILL BE POSSIBLE IN SOME AREAS. ELSEWHERE... FREEZING RAIN WILL
CREATE ICE ACCUMULATIONS OF 1/4 TO 1/2 INCH WITH SOME LOCAL
ACCUMULATIONS OF 3/4 INCH. FREEZING RAIN WILL MIX WITH SLEET
ACROSS MUCH OF THE AREA THIS AFTERNOON AND EVENING.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT WILL HAVE ICE
ACCUMULATIONS. BLOWING AND DRIFTING OF SNOW WILL ALSO BE
POSSIBLE...ESPECIALLY IN NORTHWEST OKLAHOMA.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...ICE
AND SLEET ARE EXPECTED. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE IN SOME AREAS.

&&

$$

OKZ048-052-290530-
/O.EXB.KOUN.WW.Y.0003.000000T0000Z-100129T1800Z/
ATOKA-BRYAN-
INCLUDING THE CITIES OF...ATOKA...DURANT
327 PM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN AND SLEET...WHICH IS IN EFFECT
UNTIL NOON CST FRIDAY.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN TONIGHT ACROSS
SOUTH CENTRAL OKLAHOMA. ICE MAY BEGIN TO ACCUMULATE ON POWER
LINES AND ELEVATED SURFACES. ICE ACCUMULATIONS MAY LOCALLY REACH
1/4 INCH. THE FREEZING RAIN MAY MIX WITH SLEET AT TIMES.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
SLEET WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

OKZ050-051-290530-
/O.EXT.KOUN.WW.Y.0003.000000T0000Z-100129T1800Z/
LOVE-MARSHALL-
INCLUDING THE CITIES OF...MARIETTA...MADILL
327 PM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON CST FRIDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL NOON CST
FRIDAY.

* MAIN IMPACTS: RAIN WILL CHANGE TO FREEZING RAIN THIS EVENING AND
TONIGHT ACROSS SOUTH CENTRAL OKLAHOMA. ICE MAY BEGIN TO ACCUMULATE ON
POWER LINES AND ELEVATED SURFACES. ICE ACCUMULATIONS MAY LOCALLY
REACH 1/4 INCH. THE FREEZING RAIN MAY MIX WITH SLEET AT TIMES.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 25 TO 30 MPH
WILL ADD ADDITIONAL STRESS TO POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
SLEET WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$
January 28, 2010 - 548 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
548 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290130-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
548 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A DEEP UPPER LEVEL LOW PRESSURE CENTER NEARING THE WESTERN EDGE OF
THE TEXAS PANHANDLE WILL CONTINUE TO BRING A WINTER STORM THROUGH
TONIGHT ACROSS EASTERN AND NORTHERN OKLAHOMA...AS WELL AS PARTS OF
CENTRAL OKLAHOMA. AT 5:45 PM...THE WESTERN HALF OF NORTHERN
OKLAHOMA SAW SNOW...WHILE CENTRAL AND EASTERN OKLAHOMA HAD MOSTLY
FREEZING RAIN AND SLEET. ACCUMULATIONS OF SLEET HAVE BEEN BETWEEN A
HALF INCH UP TO 2 AND A HALF INCHES. THE FREEZING LINE... CURRENTLY
EXTENDING ACROSS WESTERN NORTH TEXAS THROUGH SOUTHEASTERN
OKLAHOMA... WILL CONTINUE TO MOVE SOUTHWARD. ICE SHOULD CONTINUE TO
FORM ON SURFACES. MOTORISTS OVER THE ENTIRE AREA SHOULD USE
CAUTION... ESPECIALLY ON ELEVATED ROADWAYS WHICH ARE RAPIDLY
BECOMING SLICK. POWER OUTAGES ARE ALSO LIKELY OVER A LARGE AREA.

A DRY SLOT LOCATED JUST SOUTH OF CHEYENNE AND SOUTHWEST OF
NORMAN...WILL PUSH NORTHEAST...DRYING OUT MUCH OF CENTRAL OKLAHOMA
WITHIN THE NEXT FEW HOURS. SLEET...FREEZING RAIN...AND SNOW WILL
CONTINUE THROUGH EASTERN AND NORTHERN OKLAHOMA THROUGH THE EARLY
EVENING HOURS.

$$

RILEY
January 28, 2010 - 607 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
607 PM CST THU JAN 28 2010

.AVIATION...
A DRY SLOT HAS WRAPPED NORTHEAST INTO SOUTHWEST AND CENTRAL OK AND
WESTERN N-TX EARLY THIS EVENING WHICH HAS RESULTED IN A DECREASE
OF THE MIXED WINTER PRECIPITATION. THESE AREAS MIGHT SEE
OCCASIONAL FREEZING DRIZZLE OVERNIGHT. SCATTERED SNOW MAY MOVE
BACK INTO THIS AREA ON FRIDAY AS THE LAST OF THE UPPER SYSTEM
TRACKS THROUGH. MEANWHILE... NORTHERN OK WILL CONTINUE TO SEE
MOSTLY SNOW AND SLEET OVERNIGHT AND FRIDAY... WITH PERIODS OF
FREEZING DRIZZLE POSSIBLE IN NORTH CENTRAL OK OVERNIGHT.

&&

.PREV DISCUSSION... /ISSUED 314 PM CST THU JAN 28 2010/

DISCUSSION...
WIDESPREAD PRECIPITATION CONTINUES ACROSS THE CWA IN ASSOCIATION
WITH A ROBUST LOW PRESSURE CIRCULATION CENTERED OVER SRN NEW
MEXICO. THE REGIONAL RADAR MOSAIC SHOWS A DRY SLOT MOVING TOWARD
WESTERN NORTH TEXAS...WHICH BY LINEAR EXTRAPOLATION WOULD REACH
THE OKC METRO AREA BY LATE THIS EVENING. WHILE WE ARE NOT
EXPECTING THE PRECIP TO COMPLETELY SHUT OFF BY THEN...SHORT RANGE
MODELS DO INDICATE A DECREASE IN INTENSITY OVER MOST OF THE CWA BY
MIDNIGHT. UNTIL THEN...PER THE EARLIER WARNING DECISION UPDATE AND
21Z SPECIAL OUN SOUNDING THE WARM NOSE ABOVE THE LOWER LEVEL COLD
AIR HAS COOLED A FEW DEGREES IN THE PAST THREE HOURS.
PRECIPITATION RATES OVER SOUTH CENTRAL AND CENTRAL OK SHOULD
INCREASE WITH TIME LATE THIS AFTERNOON...BUT THE COOLING ALOFT MAY
ALLOW SOME AREAS TO CHANGE FROM FREEZING RAIN TO SLEET...OR AT
LEAST A MIX.

THE SNOW OVER NORTHERN PORTIONS OF OKLAHOMA MUST NOT
BE FORGOTTEN...WITH TOTAL ACCUMULATIONS OF 6 TO 10 INCHES
EXPECTED. NO MATTER WHAT...TRAVEL CONDITIONS SHOULD CONTINUE TO
DETERIORATE WITH AT LEAST LIGHT ICE ACCUMULATION ON EXPOSED
SURFACES. THE WINTER STORM WARNING HAS BEEN EXPANDED SOUTHWARD BY
A ROW OF COUNTIES ACCORDING TO THE CURRENT POSITION OF THE
FREEZING LINE...WITH A WINTER WEATHER ADVISORY ADDED TO ALL
COUNTIES SOUTHEAST OF THE WARNING. THE WARNING MAY BE DOWNGRADED
TO AN ADVISORY BEFORE SUNRISE TOMORROW DEPENDING ON THE DECREASE
IN PRECIPITIATION.

MANY LOCATIONS WILL NOT SEE TEMPERATURES GET MUCH ABOVE FREEZING
EVEN DURING THE AFTERNOON THROUGH SATURDAY. TEMPERATURES WILL WARM
BACK INTO THE 40S AND 50S AREA WIDE EARLY NEXT WEEK. A CHANCE OF
RAIN OR SOME OVERNIGHT LIGHT SNOW FROM MONDAY INTO TUESDAY HAS
BEEN RETAINED...WITH NO CHANGES MADE TO THE EXTENDED FORECAST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 24 27 15 31 / 100 60 20 0
HOBART OK 21 24 14 29 / 80 30 0 0
WICHITA FALLS TX 27 31 18 32 / 80 50 10 0
GAGE OK 15 25 6 36 / 90 30 0 0
PONCA CITY OK 21 26 10 29 / 100 70 20 0
DURANT OK 34 35 21 34 / 100 80 10 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL NOON CST FRIDAY FOR OKZ048-050>052.

TX...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR TXZ083>090.

&&

$$

22/03/32
January 28, 2010 - 732 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
732 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290300-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
732 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A DEEP UPPER LEVEL LOW PRESSURE CENTER NEARING THE WESTERN EDGE OF
THE TEXAS PANHANDLE WILL CONTINUE TO BRING A WINTER STORM THROUGH
TONIGHT ACROSS EASTERN AND NORTHERN OKLAHOMA...AS WELL AS PARTS OF
CENTRAL OKLAHOMA. AT 6:30 PM...NORTHERN OKLAHOMA SAW SNOW...WHILE
PARTS OF EASTERN OKLAHOMA HAD MOSTLY FREEZING RAIN AND SLEET.
ACCUMULATIONS OF SLEET HAVE BEEN BETWEEN A HALF INCH UP TO 2 AND A
HALF INCHES. ICE SHOULD CONTINUE TO FORM ON SURFACES. MOTORISTS
OVER THE ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON ELEVATED
ROADWAYS WHICH ARE RAPIDLY BECOMING SLICK. POWER OUTAGES ARE ALSO
LIKELY OVER A LARGE AREA.

A DRY SLOT LOCATED FROM GUTHRIE...EAST TO ADA...SOUTH TO ARDMORE
WILL PUSH NORTHEAST...DRYING OUT MUCH OF CENTRAL OKLAHOMA WITHIN THE
NEXT FEW HOURS. HOWEVER...AN AREA A PRECIPITATION HAS FORMED NEAR
CHEYENNE IN SOUTHWEST OKLAHOMA...SOUTH TOWARD CROWELL IN WESTERN
NORTH TEXAS. THIS AREA OF PRECIPITATION WILL MOVE NORTHEAST TOWARD
CENTRAL OKLAHOMA OVER THE NEXT FEW HOURS. SLEET...FREEZING
RAIN...AND SNOW WILL CONTINUE THROUGH PARTS OF EASTERN AND NORTHERN
OKLAHOMA BEFORE MIDNIGHT.

$$

RILEY
January 28, 2010 - 634 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
634 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290200-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
634 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A DEEP UPPER LEVEL LOW PRESSURE CENTER NEARING THE WESTERN EDGE OF
THE TEXAS PANHANDLE WILL CONTINUE TO BRING A WINTER STORM THROUGH
TONIGHT ACROSS EASTERN AND NORTHERN OKLAHOMA...AS WELL AS PARTS OF
CENTRAL OKLAHOMA. AT 6:30 PM...THE WESTERN HALF OF NORTHERN
OKLAHOMA SAW SNOW...WHILE PARTS OF CENTRAL AND EASTERN OKLAHOMA HAD
MOSTLY FREEZING RAIN AND SLEET. ACCUMULATIONS OF SLEET HAVE BEEN
BETWEEN A HALF INCH UP TO 2 AND A HALF INCHES. ICE SHOULD CONTINUE
TO FORM ON SURFACES. MOTORISTS OVER THE ENTIRE AREA SHOULD USE
CAUTION... ESPECIALLY ON ELEVATED ROADWAYS WHICH ARE RAPIDLY
BECOMING SLICK. POWER OUTAGES ARE ALSO LIKELY OVER A LARGE AREA.

A DRY SLOT LOCATED FROM GUTHRIE...EAST TO ADA...SOUTH TO ARDMORE
WILL PUSH NORTHEAST...DRYING OUT MUCH OF CENTRAL OKLAHOMA WITHIN THE
NEXT FEW HOURS. SLEET...FREEZING RAIN...AND SNOW WILL CONTINUE
THROUGH PARTS OF EASTERN AND NORTHERN OKLAHOMA THROUGH THE EARLY
EVENING HOURS.

$$

RILEY
January 28, 2010 - 826 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
826 PM CST THU JAN 28 2010

OKZ004>047-TXZ083>090-291100-
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...QUANAH...CHILLICOTHE...
CROWELL...VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...
ARCHER CITY...HOLLIDAY...LAKESIDE CITY...HENRIETTA
826 PM CST THU JAN 28 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY.

* MAIN IMPACTS: IN NORTHERN OKLAHOMA...TOTAL SNOW ACCUMULATION OF
3 TO 8 INCHES...ALONG WITH BLOWING AND DRIFTING SNOW.
ELSEWHERE...IN CENTRAL AND SOUTHERN OKLAHOMA AND WESTERN NORTH
TEXAS...FREEZING DRIZZLE FOLLOWED BY 1 TO 3 INCHES OF SNOW.

* OTHER IMPACTS: EXISTING ICE AND SNOW PACK WILL COMBINE WITH GUSTY
WINDS TO CREATE DANGEROUS OUTDOOR CONDITIONS. ROADS AND
SIDEWALKS WILL REMAIN SLICK AND HAZARDOUS...AND ICE COATED TREE
LIMBS WILL CONTINUE TO BREAK FROM SWAYING IN THE WIND. IN
ADDITION...MANY PEOPLE ARE WITHOUT POWER...AND TEMPERATURES WILL
REMAIN BELOW FREEZING WELL AFTER THE STORM ENDS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT STRONG WINDS AND SIGNIFICANT
AMOUNTS OF ICE AND SNOW ARE EXPECTED.

&&

$$

OKZ048-050>052-291100-
/O.EXT.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...ATOKA...MARIETTA...MADILL...DURANT
826 PM CST THU JAN 28 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM CST FRIDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 6 PM CST
FRIDAY.

* MAIN IMPACTS: LIGHT FREEZING RAIN...SLEET...AND SNOW WILL
DEVELOP IN SOUTHEAST OKLAHOMA ON FRIDAY...AS TEMPERATURES FALL
BELOW FREEZING.

* TIMING: THE MOST LIKELY TIME FOR WINTRY PRECIPITATION IS FROM 11
AM TO 6 PM FRIDAY.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 25 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE ICE
ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...AND SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

BURKE
January 28, 2010 - 841 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
841 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290430-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
841 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

THE POWERFUL WINTER STORM THAT HAS INFLUENCED THE AREA TODAY...IS
NOW ONLY LINGERING IN NORTHERN AND PARTS OF WESTERN OKLAHOMA. AT
8:30 PM...PARTS OF WESTERN AND NORTHERN OKLAHOMA SAW SLEET AND
SNOW...WHILE SOUTHEASTERN OKLAHOMA SAW ONLY RAIN. WINDS WERE FROM
THE NORTHEAST...SUSTAINED BETWEEN 15 AND 20 MPH...WITH HIGHER
GUSTS. TEMPERATURES WERE IN THE TEENS IN PARTS OF WESTERN
OKLAHOMA...THE 20S THROUGH MUCH OF WESTERN AND CENTRAL
OKLAHOMA...AND THE 30S THROUGH THE REST OF OKLAHOMA AND WESTERN
NORTH TEXAS.

AREAS OF SLEET AND SNOW FLURRIES WILL CONTINUE TO AFFECT NORTHERN
AND PARTS OF WESTERN OKLAHOMA THROUGH THE NEXT FEW HOURS.
ACCUMULATIONS ARE EXPECTED TO BE MINIMAL IN THESE LOCATIONS.
TEMPERATURES OVERNIGHT WILL REMAIN BELOW FREEZING THROUGH OKLAHOMA
AND WESTERN NORTH TEXAS...EXCEPT IN SOUTHEASTERN OKLAHOMA. WINDS
WILL BE STRONG THROUGH THE NIGHT....SUSTAINED BETWEEN 15 AND 20 MPH
WITH HIGHER GUSTS. THESE CONDITIONS WILL CONTINUE TO MAKE ROADS
SLICK AND HAZARDOUS. MOTORISTS OVER THE ENTIRE AREA SHOULD USE
CAUTION... ESPECIALLY ON ELEVATED ROADWAYS.

$$

RILEY
January 28, 2010 - 917 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
917 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290500-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
917 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

THE POWERFUL WINTER STORM THAT HAS INFLUENCED THE AREA TODAY...IS
NOW ONLY LINGERING IN NORTHERN AND PARTS OF WESTERN OKLAHOMA. AT
8:30 PM...PARTS OF WESTERN AND NORTHERN OKLAHOMA SAW SLEET AND
SNOW...WHILE SOUTHEASTERN OKLAHOMA SAW ONLY RAIN. WINDS WERE FROM
THE NORTHEAST...SUSTAINED BETWEEN 15 AND 20 MPH...WITH HIGHER
GUSTS. TEMPERATURES WERE IN THE TEENS IN PARTS OF WESTERN
OKLAHOMA...THE 20S THROUGH MUCH OF WESTERN AND CENTRAL
OKLAHOMA...AND THE 30S THROUGH THE REST OF OKLAHOMA AND WESTERN
NORTH TEXAS. SOUTHEASTERN OKLAHOMA HAD READINGS IN THE LOW 40S.

AREAS OF SLEET AND SNOW FLURRIES WILL CONTINUE TO AFFECT NORTHERN
AND PARTS OF WESTERN AND CENTRAL OKLAHOMA THROUGH THE NEXT FEW
HOURS. ACCUMULATIONS ARE EXPECTED TO BE MINIMAL IN THESE
LOCATIONS. TEMPERATURES OVERNIGHT WILL REMAIN BELOW FREEZING
THROUGH OKLAHOMA AND WESTERN NORTH TEXAS...EXCEPT IN SOUTHEASTERN
OKLAHOMA. WINDS WILL BE STRONG THROUGH THE NIGHT....SUSTAINED
BETWEEN 15 AND 20 MPH WITH HIGHER GUSTS. THESE CONDITIONS WILL
CONTINUE TO MAKE ROADS SLICK AND HAZARDOUS. MOTORISTS OVER THE
ENTIRE AREA SHOULD USE CAUTION... ESPECIALLY ON ELEVATED ROADWAYS.

$$

RILEY
January 28, 2010 - 919 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
919 PM CST THU JAN 28 2010

.UPDATE...WE AMENDED THE FORECAST SOMEWHAT FOR BOTH TONIGHT AND
FRIDAY TO EMPHASIZE THE TRENDS IN OBSERVATIONAL DATA AND THE 18
AND 00Z NAM. SATELLITE AND UPPER AIR DATA SHOWED THAT A SMALL BUT
STRONG MID LEVEL CYCLONE HAD STALLED IN THE PANHNADLES. A MID
LEVEL DRY SLOT WRAPPED AROUND TO THE EAST OF THE LOW...
OVERSRPREADING WESTERN NORTH TEXAS AND PENETRATING TO THE NORTH OF
INTERSTATE 40 IN OKLAHOMA. LIGHT TO MODERATE SNOW WILL
CONTINUE...HOWEVER...LOCATED IN A WEST TO EAST BAND ACROSS
NORTHERN OKLAHOMA...COINCIDENT WITH THE EASTERNMOST EXTENSION OF
THE PANHANDLE CYCLONE. ELSEWHERE...PRECIPITATION WILL BE MUCH
LIGHTER BENEATH THE DRY SLOT...AND GIVEN THE LACK OF DEEP
LIFTING...WE EXPECT A PERIOD OF WIDESPREAD FREEZING DRIZZLE AND
SNOW FLURRIES.

LATE TONIGHT...THE DRY SLOT SHOULD BEGIN TO FILL WITH ADDITIONAL
LIFT AND PRECIPITATION...AS ANOTHER COMPACT MID LEVEL CIRCULATION
EJECTS FROM THE BASE OF THE TROUGH TO OUR WEST. THE SIGNS OF
INITIAL DEVELOPMENT WERE ALREADY UNDERWAY THIS EVENING IN
SOUTHWEST TEXAS. ALL THE FORECAST MODELS TRACK THE CIRCULATION ACROSS
NORTH TEXAS AND SOUTHERN OKLAHOMA ON FRIDAY...BUT THEY DIFFER
SOMEWHAT ON STRENGTH. WHAT WE DO KNOW...IS THAT MID LEVEL COOLING
AND ASCENT SHOULD RESULT IN PRIMARILY SLEET AND SNOW. A BRIEF
PERIOD OF FREEZING RAIN IS POSSIBLE DURING THE ONSET OF
PRECIPITATION...ESPECIALLY EAST OF INTERSTATE 44. THE MAIN
QUESTION IS HOW MUCH SNOW WILL ACCUMULATE DURING MIDDAY AND
AFTERNOON. LOW LEVEL MOISTURE WILL NOT BE READILY AVAILABLE...BUT
THE SYSTEM MAY COMPENSATE BY PRODUCING SUBSTANTIAL MID LEVEL
LIFT...INCLUDING IN THE DENDRITIC CRYSTAL ZONE. WE INCREASED
SNOWFALL TOTALS TO RANGE FROM 1 TO 3 INCHES ANYWHERE FROM WICHITA
FALLS UP THROUGH SOUTHERN AND CENTRAL OKLAHOMA ON FRIDAY. SOME OF
THE MODELS SUGGEST THAT SNOW COULD BE HEAVIER THAN THIS...IF THE
MID LEVEL CIRCULATION REMAINS CLOSED FOR A LONGER PERIOD OF TIME.

THE NIGHT SHIFT WILL EVALUATE WHAT PART OF THE WINTER STORM
WARNING MAY NEED TO BE EXTENDED IN TIME OR CONVERTED TO AN
ADVISORY FOR SNOW...OR BOTH. IN THE MEANTIME...WE EXTENDED THE
ADVISORY COUNTIES IN THE SOUTHEAST TO 6 PM FRIDAY...AS WINTRY
PRECIPITATION WILL BE MORE LIKELY THERE DURING THE AFTERNOON.

&&

BURKE

&&

.PREV DISCUSSION... /ISSUED 607 PM CST THU JAN 28 2010/

AVIATION...
A DRY SLOT HAS WRAPPED NORTHEAST INTO SOUTHWEST AND CENTRAL OK AND
WESTERN N-TX EARLY THIS EVENING WHICH HAS RESULTED IN A DECREASE
OF THE MIXED WINTER PRECIPITATION. THESE AREAS MIGHT SEE
OCCASIONAL FREEZING DRIZZLE OVERNIGHT. SCATTERED SNOW MAY MOVE
BACK INTO THIS AREA ON FRIDAY AS THE LAST OF THE UPPER SYSTEM
TRACKS THROUGH. MEANWHILE... NORTHERN OK WILL CONTINUE TO SEE
MOSTLY SNOW AND SLEET OVERNIGHT AND FRIDAY... WITH PERIODS OF
FREEZING DRIZZLE POSSIBLE IN NORTH CENTRAL OK OVERNIGHT.

PREV DISCUSSION... /ISSUED 314 PM CST THU JAN 28 2010/

DISCUSSION...
MANY LOCATIONS WILL NOT SEE TEMPERATURES GET MUCH ABOVE FREEZING
EVEN DURING THE AFTERNOON THROUGH SATURDAY. TEMPERATURES WILL WARM
BACK INTO THE 40S AND 50S AREA WIDE EARLY NEXT WEEK. A CHANCE OF
RAIN OR SOME OVERNIGHT LIGHT SNOW FROM MONDAY INTO TUESDAY HAS
BEEN RETAINED...WITH NO CHANGES MADE TO THE EXTENDED FORECAST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 24 27 15 31 / 90 70 20 0
HOBART OK 21 24 14 29 / 60 50 0 0
WICHITA FALLS TX 27 31 18 32 / 70 60 10 0
GAGE OK 15 25 6 36 / 100 30 0 0
PONCA CITY OK 21 26 10 29 / 100 60 20 0
DURANT OK 34 35 21 34 / 100 90 10 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 PM CST FRIDAY FOR OKZ048-050>052.

TX...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR TXZ083>090.

&&

$$

22/32
January 28, 2010 - 950 PM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
950 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-291100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
950 PM CST THU JAN 28 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...REST OF TONIGHT.

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
AN EARLIER ROUND OF PRECIPITATION AND THUNDERSTORMS HAD REMOVED
INSTABILITY. A POTENT UPPER LEVEL TROUGH WILL APPROACH FROM
SOUTHWEST TEXAS LATE TONIGHT...RESULTING IN AN INCREASE TO RAIN AND
SNOW OVER MUCH OF THE REGION...BUT INSTABILITY IS EXPECTED TO BE
INSUFFICIENT TO SUPPORT THUNDER.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY JAN 29.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...15 PERCENT.

OTHER HAZARDOUS WEATHER...
ACCUMULATING SNOWFALL WILL AFFECT NORTHERN AND WESTERN OKLAHOMA
TONIGHT. ELSEWHERE...LIGHT FREEZING DRIZZLE AND SNOW FLURRIES ARE
LIKELY OVER ALL BUT SOUTHEAST OKLAHOMA. PLEASE REFER TO THE LATEST
WINTER WEATHER WARNING AND ADVISORY PRODUCTS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
ON FRIDAY AN UPPER TROUGH WILL TRACK ALONG THE RED RIVER. MIXED
PRECIPITATION WILL CHANGE TO SNOW FROM WICHITA FALLS UP THROUGH
OKLAHOMA CITY...AND OVER EASTERN OKLAHOMA. ACCUMULATION OF 1 TO 3
INCHES OF SNOW IS FORECAST. MEANWHILE...ICE COATED TREES AND POWER
LINES MAY CONTINUE TO FALL TO THE GROUND AS THEY SWAY IN GUSTY NORTH
WINDS. THE PRECIPITATION AND WINDS WILL DECREASE FRIDAY NIGHT.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
FRIDAY JANUARY 29.

$$

BURKE
January 28, 2010 - 1030 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1030 PM CST THU JAN 28 2010

OKZ004>048-050>052-TXZ083>090-290630-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1030 PM CST THU JAN 28 2010

.REGIONAL WEATHER DISCUSSION...

A SCATTERED MIX OF WINTER PRECIPITATION TYPES CONTINUED OVER THE
REGION LATE THIS EVENING. LIGHT SNOW WAS OCCURRING OVER NORTHERN AND
WEST CENTRAL OKLAHOMA... GENERALLY ALONG AND NORTHWEST OF A PERRY...
TO WATONGA... TO CORDELL LINE. MEANWHILE... A MIX OF LIGHT FREEZING
RAIN AND SLEET WAS OCCURRING OVER CENTRAL AND SOUTHWEST OKLAHOMA.
FARTHER SOUTH... ACROSS SOUTH CENTRAL AND SOUTHEAST OKLAHOMA... INTO
THE WICHITA FALLS AREA... RAIN WAS FALLING AS TEMPERATURES WERE
ABOVE FREEZING. WINDS WERE FROM THE NORTHEAST... BETWEEN 15 AND 20
MPH...WITH OCCASIONAL HIGHER GUSTS. TEMPERATURES RANGED FROM THE
LOWER 20S IN NORTHWEST OKLAHOMA... TO MID AND UPPER 30S IN SOUTHEAST
OKLAHOMA AND PARTS OF NORTH TEXAS.

THE LIGHT WINTER PRECIPITATION WILL CONTINUE OVER MUCH OF CENTRAL...
WESTERN AND NORTHERN OKLAHOMA OVERNIGHT... WITH LIGHT RAIN AND
OCCASIONAL SLEET ELSEWHERE. TEMPERATURES THROUGH THE NIGHT WILL
REMAIN BELOW FREEZING ACROSS MOST OF CENTRAL... WESTERN AND NORTHERN
OKLAHOMA AND INTO PARTS OF WESTERN NORTH TEXAS. ROADS IN THESE AREAS
WILL REMAIN SLICK AND HAZARDOUS. MOTORISTS TRAVELING OVERNIGHT
SHOULD USE EXTREME CAUTION.

$$

CJS
January 28, 2010 - 1055 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1055 PM CST THU JAN 28 2010

.AVIATION...
/06Z TAFS/
SCATTERED LIGHT FREEZING DRIZZLE... SLEET AND SNOW WILL CONTINUE
OVER MOST OF THE TERMINALS OVERNIGHT... EXCEPT FOR A MIX OF RAIN AND
SLEET AT SPS... AS AN UPPER LEVEL STORM SYSTEM CONTINUES TO
APPROACH FROM THE WEST. THE SNOW IS EXPECTED TO INCREASE OVER
CENTRAL AND SOUTHERN OK AND WESTERN N-TX ON FRIDAY AS THE STORM
SYSTEM MOVES OVER THE SOUTHERN PLAINS. PRECIPITATION SHOULD BE
ENDING AT ALL TERMINAL LOCATIONS BY FRIDAY EVENING. IFR CEILINGS
AND MVFR VSBYS WILL CONTINUE THROUGH THE FORECAST PERIOD WITH
LOCAL IFR VSBYS IN SNOW AND FOG.


&&

.PREV DISCUSSION... /ISSUED 919 PM CST THU JAN 28 2010/

UPDATE...WE AMENDED THE FORECAST SOMEWHAT FOR BOTH TONIGHT AND
FRIDAY TO EMPHASIZE THE TRENDS IN OBSERVATIONAL DATA AND THE 18
AND 00Z NAM. SATELLITE AND UPPER AIR DATA SHOWED THAT A SMALL BUT
STRONG MID LEVEL CYCLONE HAD STALLED IN THE PANHNADLES. A MID
LEVEL DRY SLOT WRAPPED AROUND TO THE EAST OF THE LOW...
OVERSRPREADING WESTERN NORTH TEXAS AND PENETRATING TO THE NORTH OF
INTERSTATE 40 IN OKLAHOMA. LIGHT TO MODERATE SNOW WILL
CONTINUE...HOWEVER...LOCATED IN A WEST TO EAST BAND ACROSS
NORTHERN OKLAHOMA...COINCIDENT WITH THE EASTERNMOST EXTENSION OF
THE PANHANDLE CYCLONE. ELSEWHERE...PRECIPITATION WILL BE MUCH
LIGHTER BENEATH THE DRY SLOT...AND GIVEN THE LACK OF DEEP
LIFTING...WE EXPECT A PERIOD OF WIDESPREAD FREEZING DRIZZLE AND
SNOW FLURRIES.

LATE TONIGHT...THE DRY SLOT SHOULD BEGIN TO FILL WITH ADDITIONAL
LIFT AND PRECIPITATION...AS ANOTHER COMPACT MID LEVEL CIRCULATION
EJECTS FROM THE BASE OF THE TROUGH TO OUR WEST. THE SIGNS OF
INITIAL DEVELOPMENT WERE ALREADY UNDERWAY THIS EVENING IN
SOUTHWEST TEXAS. ALL THE FORECAST MODELS TRACK THE CIRCULATION ACROSS
NORTH TEXAS AND SOUTHERN OKLAHOMA ON FRIDAY...BUT THEY DIFFER
SOMEWHAT ON STRENGTH. WHAT WE DO KNOW...IS THAT MID LEVEL COOLING
AND ASCENT SHOULD RESULT IN PRIMARILY SLEET AND SNOW. A BRIEF
PERIOD OF FREEZING RAIN IS POSSIBLE DURING THE ONSET OF
PRECIPITATION...ESPECIALLY EAST OF INTERSTATE 44. THE MAIN
QUESTION IS HOW MUCH SNOW WILL ACCUMULATE DURING MIDDAY AND
AFTERNOON. LOW LEVEL MOISTURE WILL NOT BE READILY AVAILABLE...BUT
THE SYSTEM MAY COMPENSATE BY PRODUCING SUBSTANTIAL MID LEVEL
LIFT...INCLUDING IN THE DENDRITIC CRYSTAL ZONE. WE INCREASED
SNOWFALL TOTALS TO RANGE FROM 1 TO 3 INCHES ANYWHERE FROM WICHITA
FALLS UP THROUGH SOUTHERN AND CENTRAL OKLAHOMA ON FRIDAY. SOME OF
THE MODELS SUGGEST THAT SNOW COULD BE HEAVIER THAN THIS...IF THE
MID LEVEL CIRCULATION REMAINS CLOSED FOR A LONGER PERIOD OF TIME.

THE NIGHT SHIFT WILL EVALUATE WHAT PART OF THE WINTER STORM
WARNING MAY NEED TO BE EXTENDED IN TIME OR CONVERTED TO AN
ADVISORY FOR SNOW...OR BOTH. IN THE MEANTIME...WE EXTENDED THE
ADVISORY COUNTIES IN THE SOUTHEAST TO 6 PM FRIDAY...AS WINTRY
PRECIPITATION WILL BE MORE LIKELY THERE DURING THE AFTERNOON.

BURKE

PREV DISCUSSION... /ISSUED 607 PM CST THU JAN 28 2010/

AVIATION...
A DRY SLOT HAS WRAPPED NORTHEAST INTO SOUTHWEST AND CENTRAL OK AND
WESTERN N-TX EARLY THIS EVENING WHICH HAS RESULTED IN A DECREASE
OF THE MIXED WINTER PRECIPITATION. THESE AREAS MIGHT SEE
OCCASIONAL FREEZING DRIZZLE OVERNIGHT. SCATTERED SNOW MAY MOVE
BACK INTO THIS AREA ON FRIDAY AS THE LAST OF THE UPPER SYSTEM
TRACKS THROUGH. MEANWHILE... NORTHERN OK WILL CONTINUE TO SEE
MOSTLY SNOW AND SLEET OVERNIGHT AND FRIDAY... WITH PERIODS OF
FREEZING DRIZZLE POSSIBLE IN NORTH CENTRAL OK OVERNIGHT.

PREV DISCUSSION... /ISSUED 314 PM CST THU JAN 28 2010/

DISCUSSION...
MANY LOCATIONS WILL NOT SEE TEMPERATURES GET MUCH ABOVE FREEZING
EVEN DURING THE AFTERNOON THROUGH SATURDAY. TEMPERATURES WILL WARM
BACK INTO THE 40S AND 50S AREA WIDE EARLY NEXT WEEK. A CHANCE OF
RAIN OR SOME OVERNIGHT LIGHT SNOW FROM MONDAY INTO TUESDAY HAS
BEEN RETAINED...WITH NO CHANGES MADE TO THE EXTENDED FORECAST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 24 27 15 31 / 90 70 20 0
HOBART OK 21 24 14 29 / 60 50 0 0
WICHITA FALLS TX 27 31 18 32 / 70 60 10 0
GAGE OK 15 25 6 36 / 100 30 0 0
PONCA CITY OK 21 26 10 29 / 100 60 20 0
DURANT OK 34 35 21 34 / 100 90 10 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 PM CST FRIDAY FOR OKZ048-050>052.

TX...WINTER STORM WARNING UNTIL NOON CST FRIDAY FOR TXZ083>090.

&&

$$

22/03/32
January 29, 2010 - 1220 AM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1220 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-290900-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1220 AM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

A SCATTERED MIX OF WINTER PRECIPITATION TYPES CONTINUED OVER THE
REGION EARLY THIS MORNING. LIGHT SNOW WAS OCCURRING OVER
NORTHERN AND WEST CENTRAL OKLAHOMA... GENERALLY ALONG AND NORTHWEST
OF A PERRY... TO WATONGA... TO CORDELL LINE. MEANWHILE... A MIX OF
LIGHT FREEZING RAIN AND SLEET WAS OCCURRING OVER CENTRAL AND
SOUTHWEST OKLAHOMA. FARTHER SOUTH... ACROSS SOUTH CENTRAL AND
SOUTHEAST OKLAHOMA... INTO THE WICHITA FALLS AREA... RAIN WAS
FALLING AS TEMPERATURES WERE ABOVE FREEZING. WINDS WERE FROM THE
NORTHEAST... BETWEEN 10 AND 15 MPH...WITH OCCASIONAL HIGHER GUSTS.
TEMPERATURES RANGED FROM THE UPPER TEENS IN NORTHWEST OKLAHOMA...
TO MID AND UPPER 30S IN SOUTHEAST OKLAHOMA AND PARTS OF NORTH TEXAS.

THE LIGHT WINTER PRECIPITATION WILL CONTINUE OVER MUCH OF CENTRAL...
WESTERN AND NORTHERN OKLAHOMA OVERNIGHT... WITH LIGHT RAIN AND
OCCASIONAL SLEET ELSEWHERE. TEMPERATURES THROUGH THE NIGHT WILL
REMAIN BELOW FREEZING ACROSS MOST OF CENTRAL... WESTERN AND NORTHERN
OKLAHOMA AND INTO PARTS OF WESTERN NORTH TEXAS. ROADS IN THESE AREAS
WILL REMAIN SLICK AND HAZARDOUS. MOTORISTS TRAVELING OVERNIGHT
SHOULD USE EXTREME CAUTION.

$$

30
January 29, 2010 - 320 AM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
320 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-291300-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
320 AM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

A SCATTERED MIX OF WINTER PRECIPITATION TYPES CONTINUED OVER THE
REGION EARLY THIS MORNING. LIGHT SNOW WAS OCCURRING OVER PORTIONS OF
NORTHERN AND WEST CENTRAL OKLAHOMA... GENERALLY ALONG AND NORTHWEST
OF A BLACKWELL... TO WATONGA... TO CORDELL LINE. MEANWHILE... LIGHT
FREEZING RAIN WAS OCCURRING OVER CENTRAL AND SOUTHWEST OKLAHOMA AND
WESTERN NORTH TEXAS. FARTHER SOUTH... ACROSS SOUTH CENTRAL AND
SOUTHEAST OKLAHOMA... RAIN WAS FALLING AS TEMPERATURES WERE ABOVE
FREEZING. WINDS WERE FROM THE NORTHEAST... BETWEEN 10 AND 20
MPH...WITH OCCASIONAL HIGHER GUSTS. TEMPERATURES RANGED FROM THE
UPPER TEENS IN NORTHWEST OKLAHOMA... TO MID 30S IN SOUTHEAST
OKLAHOMA.

THE LIGHT WINTER PRECIPITATION WILL CONTINUE OVER MUCH OF CENTRAL...
WESTERN AND NORTHERN OKLAHOMA THIS MORNING... WITH LIGHT TO
OCCASIONALLY MODERATE RAIN OCCURRING ACROSS SOUTHEAST OKLAHOMA.
TEMPERATURES WILL REMAIN BELOW FREEZING ACROSS MOST OF CENTRAL...
WESTERN AND NORTHERN OKLAHOMA AND INTO PARTS OF WESTERN NORTH TEXAS.
ROADS IN THESE AREAS WILL REMAIN SLICK AND HAZARDOUS. MOTORISTS
TRAVELING OVERNIGHT SHOULD USE EXTREME CAUTION.

$$

30
January 29, 2010 - 339 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
339 AM CST FRI JAN 29 2010

.DISCUSSION...
PRECIPITATION ACROSS WEST CENTRAL AND NORTH CENTRAL OKLAHOMA HAS
WAVERED BETWEEN FREEZING AND FROZEN SINCE MIDNIGHT. MODELS ARE IN
GOOD AGREEMENT THAT THE THERMAL STRUCTURE WILL TRANSITION AROUND
SUNRISE IN CENTRAL AND SOUTHWEST OKLAHOMA TO SUPPORT SNOW. THIS
TRANSITION WILL OCCUR MID-DAY IN SOUTHEAST OKLAHOMA. AS THE UPPER
LOW MOVES FROM SOUTHEAST NEW MEXICO TOWARD SOUTHWEST OKLAHOMA AT
MID-DAY, THE LAST SIGNIFICANT SHORT WAVE TROUGH IS EXPECTED TO
PRODUCE SNOWFALL FROM THE VICINITY OF WICHITA FALLS TOWARD PAUL'S
VALLEY AND TOWARDS ADA AND SHAWNEE THIS AFTERNOON. ADDITIONALLY,
THE PATH OF THE STORM WILL REDUCE TEMPERATURES LOCALLY TO HELP
BRING THE SNOW LINE TOWARD COALGATE OR ARDMORE. THE RUC'S 16Z
FORECAST STARTS WITH UP TO 2 INCHES AROUND WICHITA FALLS AND THE
NAM AND GFS ARE QUITE SIMILAR IN PRODUCING AROUND 2 INCHES IN THE
ABOVE-MENTIONED PATH. THIS HAS PROMPTED A WINTER WEATHER ADVISORY
FOR THESE AREAS AFTER THE WARNING EXPIRES AT NOON. SNOWFALL IS NOT
EXPECTED TO EXCEED ADVISORY CRITERIA AND BY THE AFTERNOON THESE
AREAS ARE NOT EXPECTED TO HAVE MIXED PRECIPITATION. SOUTHEAST
OKLAHOMA'S FORECAST OF SNOW AND SLEET WILL IS STILL VALID.

THE COLD AIRMASS WILL REMAIN IN PLACE INTO SUNDAY. THERE IS A
SMALL CHANCE FOR RAIN IN THE CENTRAL THIRD OF OKLAHOMA MONDAY WITH
THE PASSAGE OF A WEAK WAVE IN FLOW TO THE NORTH OF OKLAHOMA. THE
BETTER CHANCE FOR RAIN IS WEDNESDAY OR THURSDAY WHEN A STRONGER
TROUGH APPROACHES FROM THE SOUTHWEST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 15 31 13 / 70 20 0 0
HOBART OK 24 14 29 17 / 50 0 0 0
WICHITA FALLS TX 31 18 32 21 / 60 10 0 0
GAGE OK 25 6 36 12 / 30 0 0 0
PONCA CITY OK 26 10 29 9 / 60 20 0 0
DURANT OK 35 21 34 23 / 90 10 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY FROM NOON TODAY TO 6 PM CST THIS EVENING
FOR OKZ019-020-025-026-028>032-040>043-046-047.

WINTER STORM WARNING UNTIL NOON CST TODAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ048-
050>052.

TX...WINTER STORM WARNING UNTIL NOON CST TODAY FOR TXZ083>090.

&&

$$

30/09
January 29, 2010 - 347 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
347 AM CST FRI JAN 29 2010

OKZ019-020-025-026-028>032-040>043-046-047-291800-
/O.EXB.KOUN.WW.Y.0003.100129T1800Z-100130T0000Z/
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
LOGAN-PAYNE-OKLAHOMA-LINCOLN-MCCLAIN-CLEVELAND-POTTAWATOMIE-
SEMINOLE-HUGHES-GARVIN-MURRAY-PONTOTOC-COAL-CARTER-JOHNSTON-
INCLUDING THE CITIES OF...GUTHRIE...STILLWATER...OKLAHOMA CITY...
CHANDLER...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...PAULS VALLEY...SULPHUR...ADA...COALGATE...ARDMORE...
TISHOMINGO
347 AM CST FRI JAN 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 PM CST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM NOON TODAY TO 6
PM CST THIS EVENING. A WINTER STORM WARNING REMAINS IN EFFECT
UNTIL NOON CST TODAY.

* MAIN IMPACTS: SNOWFALL OF 1 TO 3 INCHES.

* TIMING: CONTINUING FROM THE MORNING...SNOW IS EXPECTED TO
PERSIST THROUGH THE AFTERNOON.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...AND SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ004>018-021>024-027-033>039-044-045-TXZ083>090-291800-
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-BECKHAM-WASHITA-
CADDO-CANADIAN-GRADY-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-
STEPHENS-COTTON-JEFFERSON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...ELK CITY...SAYRE...CORDELL...ANADARKO...YUKON...
EL RENO...MUSTANG...CHICKASHA...HOLLIS...MANGUM...HOBART...
ALTUS...FREDERICK...LAWTON...DUNCAN...WALTERS...WAURIKA...
QUANAH...CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...
MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...
LAKESIDE CITY...HENRIETTA
347 AM CST FRI JAN 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* MAIN IMPACTS: IN NORTHERN OKLAHOMA...TOTAL SNOW ACCUMULATION
OF 3 TO 8 INCHES...ALONG WITH BLOWING AND DRIFTING SNOW.
ELSEWHERE...IN CENTRAL AND SOUTHERN OKLAHOMA AND WESTERN NORTH
TEXAS...FREEZING DRIZZLE FOLLOWED BY 1 TO 2 INCHES OF SNOW.

* OTHER IMPACTS: ICE COATED TREE LIMBS WILL CONTINUE TO BREAK FROM
ADDITIONAL ICE AND SWAYING IN THE WIND. IN ADDITION...MANY
PEOPLE ARE WITHOUT POWER...AND TEMPERATURES WILL REMAIN BELOW
FREEZING AFTER THE STORM ENDS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT GUSTY WINDS AND SIGNIFICANT
AMOUNTS OF ICE AND SNOW ARE EXPECTED.

&&

$$

OKZ048-050>052-291800-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...ATOKA...MARIETTA...MADILL...DURANT
347 AM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING.

* MAIN IMPACTS: LIGHT FREEZING RAIN...SLEET...AND SNOW WILL
DEVELOP IN SOUTHEAST OKLAHOMA.

* TIMING: THE MOST LIKELY TIME FOR WINTRY PRECIPITATION IS UNTIL 6 PM
FRIDAY.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...AND SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
January 29, 2010 - 500 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-291800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CST FRI JAN 29 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
A POTENT UPPER LEVEL STORM WILL MOVE ACROSS OKLAHOMA AND NORTH TEXAS
TODAY...RESULTING IN AREAS OF FREEZING RAIN... SLEET AND SNOW OVER
MUCH OF THE REGION...BUT INSTABILITY IS EXPECTED TO BE INSUFFICIENT
TO SUPPORT THUNDER.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST SATURDAY JAN 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...5 PERCENT.

OTHER HAZARDOUS WEATHER...
AN UPPER TROUGH WILL TRACK ALONG THE RED RIVER TODAY. MIXED
PRECIPITATION WILL CHANGE TO SNOW FROM WICHITA FALLS UP THROUGH
OKLAHOMA CITY...AND OVER EASTERN OKLAHOMA. ACCUMULATION OF 1 TO 3
INCHES OF SNOW IS FORECAST. MEANWHILE...ICE COATED TREES AND POWER
LINES MAY CONTINUE TO FALL TO THE GROUND AS THEY SWAY IN GUSTY NORTH
WINDS. THE PRECIPITATION AND WINDS WILL DECREASE FRIDAY NIGHT.
PLEASE REFER TO THE LATEST WINTER WEATHER WARNING AND ADVISORY
PRODUCTS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO PARTS OF THE
AREA ON WEDNESDAY. THE CHANCE OF SEVERE WEATHER REMAINS LOW.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON
TODAY.

$$

30
January 29, 2010 - 543 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
543 AM CST FRI JAN 29 2010

.AVIATION...
IFR CONDITIONS IN LOW CEILINGS ARE EXPECTED THROUGH 301200.
FREEZING DRIZZLE IS WIDESPREAD THIS MORNING. SNOW WILL MOVE FROM
SOUTHWEST TO CENTRAL OKLAHOMA LATER TODAY. FLURRIES WILL EXIST
BEYOND 300000.

&&

.PREV DISCUSSION... /ISSUED 339 AM CST FRI JAN 29 2010/

DISCUSSION...
PRECIPITATION ACROSS WEST CENTRAL AND NORTH CENTRAL OKLAHOMA HAS
WAVERED BETWEEN FREEZING AND FROZEN SINCE MIDNIGHT. MODELS ARE IN
GOOD AGREEMENT THAT THE THERMAL STRUCTURE WILL TRANSITION AROUND
SUNRISE IN CENTRAL AND SOUTHWEST OKLAHOMA TO SUPPORT SNOW. THIS
TRANSITION WILL OCCUR MID-DAY IN SOUTHEAST OKLAHOMA. AS THE UPPER
LOW MOVES FROM SOUTHEAST NEW MEXICO TOWARD SOUTHWEST OKLAHOMA AT
MID-DAY, THE LAST SIGNIFICANT SHORT WAVE TROUGH IS EXPECTED TO
PRODUCE SNOWFALL FROM THE VICINITY OF WICHITA FALLS TOWARD PAUL'S
VALLEY AND TOWARDS ADA AND SHAWNEE THIS AFTERNOON. ADDITIONALLY,
THE PATH OF THE STORM WILL REDUCE TEMPERATURES LOCALLY TO HELP
BRING THE SNOW LINE TOWARD COALGATE OR ARDMORE. THE RUC'S 16Z
FORECAST STARTS WITH UP TO 2 INCHES AROUND WICHITA FALLS AND THE
NAM AND GFS ARE QUITE SIMILAR IN PRODUCING AROUND 2 INCHES IN THE
ABOVE-MENTIONED PATH. THIS HAS PROMPTED A WINTER WEATHER ADVISORY
FOR THESE AREAS AFTER THE WARNING EXPIRES AT NOON. SNOWFALL IS NOT
EXPECTED TO EXCEED ADVISORY CRITERIA AND BY THE AFTERNOON THESE
AREAS ARE NOT EXPECTED TO HAVE MIXED PRECIPITATION. SOUTHEAST
OKLAHOMA'S FORECAST OF SNOW AND SLEET WILL IS STILL VALID.

THE COLD AIRMASS WILL REMAIN IN PLACE INTO SUNDAY. THERE IS A
SMALL CHANCE FOR RAIN IN THE CENTRAL THIRD OF OKLAHOMA MONDAY WITH
THE PASSAGE OF A WEAK WAVE IN FLOW TO THE NORTH OF OKLAHOMA. THE
BETTER CHANCE FOR RAIN IS WEDNESDAY OR THURSDAY WHEN A STRONGER
TROUGH APPROACHES FROM THE SOUTHWEST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 15 31 13 / 70 20 0 0
HOBART OK 24 14 29 17 / 50 0 0 0
WICHITA FALLS TX 31 18 32 21 / 60 10 0 0
GAGE OK 25 6 36 12 / 30 0 0 0
PONCA CITY OK 26 10 29 9 / 60 20 0 0
DURANT OK 35 21 34 23 / 90 10 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY FROM NOON TODAY TO 6 PM CST THIS EVENING
FOR OKZ019-020-025-026-028>032-040>043-046-047.

WINTER STORM WARNING UNTIL NOON CST TODAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ048-
050>052.

TX...WINTER STORM WARNING UNTIL NOON CST TODAY FOR TXZ083>090.

&&

$$

30/09/09
January 29, 2010 - 700 AM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
700 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-291500-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
700 AM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

A SCATTERED MIX OF WINTER PRECIPITATION TYPES CONTINUED OVER THE
REGION EARLY THIS MORNING. LIGHT SNOW WAS OCCURRING OVER PORTIONS OF
NORTHERN AND WEST CENTRAL OKLAHOMA... GENERALLY ALONG AND NORTHWEST
OF A BLACKWELL... TO WATONGA... TO CORDELL LINE. MEANWHILE... LIGHT
FREEZING RAIN WAS OCCURRING OVER CENTRAL AND SOUTHWEST OKLAHOMA AND
WESTERN NORTH TEXAS. FARTHER SOUTH... ACROSS SOUTH CENTRAL AND
SOUTHEAST OKLAHOMA... RAIN WAS FALLING AS TEMPERATURES WERE ABOVE
FREEZING. WINDS WERE FROM THE NORTHEAST... BETWEEN 10 AND 20
MPH...WITH OCCASIONAL HIGHER GUSTS. TEMPERATURES RANGED FROM THE
MIDDLE TEENS IN NORTHWEST OKLAHOMA... TO MID 30S IN SOUTHEAST
OKLAHOMA.

THE LIGHT WINTER PRECIPITATION WILL CONTINUE OVER MUCH OF CENTRAL...
WESTERN AND NORTHERN OKLAHOMA THIS MORNING... WITH LIGHT RAIN
OCCURRING ACROSS SOUTHEAST OKLAHOMA. TEMPERATURES WILL REMAIN BELOW
FREEZING ACROSS MOST OF CENTRAL... WESTERN AND NORTHERN OKLAHOMA AND
INTO PARTS OF WESTERN NORTH TEXAS. ROADS IN THESE AREAS WILL REMAIN
SLICK AND HAZARDOUS. MOTORISTS TRAVELING THIS MORNING SHOULD USE
EXTREME CAUTION.

$$

30
January 29, 2010 - 913 AM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
913 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-291600-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
913 AM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

AT 9 AM...A BAND OF LIGHT TO MODERATE SNOW...WITH SOME FREEZING RAIN
AND SLEET NEAR THE SOUTHERN END OF THE BAND...HAD FORMED FROM NEAR
ARCHER CITY AND WICHITA FALLS TEXAS... TO LAWTON AND CHICKASHA
OKLAHOMA... ACROSS THE OKLAHOMA CITY METRO AREA... TO CHANDLER. THIS
BAND WAS PRODUCING SNOWFALL AT RATES UP TO AROUND ONE HALF INCH PER
HOUR. MEANWHILE... LIGHT FREEZING DRIZZLE AND SLEET WAS FALLING IN
SOUTH CENTRAL OKLAHOMA NEAR THE FREEZING LINE WHICH STRETCHED FROM
NEAR HOLDENVILLE TO NEAR ARDMORE. LIGHT RAIN WAS OCCURRING IN
SOUTHEAST OKLAHOMA...WITH LIGHT SNOW ACROSS NORTHERN OKLAHOMA.

THROUGH 11 AM... THE FREEZING PRECIPITATION BAND WILL PROGRESS
SLOWLY NORTHWARD. FURTHER DEVELOPMENT OF SNOW WILL BE POSSIBLE INTO
THIS AFTERNOON AS AN UPPER LOW MIGRATES FROM WEST TEXAS ALONG THE
RED RIVER. ONE TO THREE INCHES OF ADDITIONAL SNOW MAY ACCUMULATE
ACROSS PORTIONS OF SOUTH CENTRAL AND CENTRAL OKLAHOMA.

$$
January 29, 2010 - 1044 AM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1044 AM CST FRI JAN 29 2010

.UPDATE...
RADAR AND SURFACE OBSERVATIONS...AS WELL AS SHORT TERM MODEL
DATA...INDICATE THAT CONDITIONS ARE FAVORABLE FOR ACCUMULATING
SNOW ACROSS MAINLY THE EASTERN TWO THIRDS OF THE CWA THIS
AFTERNOON. TOTALS FROM THIS MORNING THROUGH THIS AFTERNOON ARE
EXPECTED TO RANGE FROM ONE TO THREE INCHES...WITH LOCALLY HIGHER
AMOUNTS. THE WINTER WX ADVISORY FOR THIS AFTERNOON HAS BEEN
EXTENDED TO THE WEST BY A COUPLE ROWS OF COUNTIES. A MIX OF
FREEZING DRIZZLE AND SLEET IS EXPECTED IN SOUTHEAST OK PRIOR TO A
CHANGEOVER TO ALL SNOW BY LATE AFTERNOON OR SO.

HOURLY TEMPERATURE AND WIND GRIDS HAVE BEEN UPDATED...AS WELL AS
PRECIP CHANCES.

&&

.PREV DISCUSSION... /ISSUED 543 AM CST FRI JAN 29 2010/

AVIATION...
IFR CONDITIONS IN LOW CEILINGS ARE EXPECTED THROUGH 301200.
FREEZING DRIZZLE IS WIDESPREAD THIS MORNING. SNOW WILL MOVE FROM
SOUTHWEST TO CENTRAL OKLAHOMA LATER TODAY. FLURRIES WILL EXIST
BEYOND 300000.

PREV DISCUSSION... /ISSUED 339 AM CST FRI JAN 29 2010/

DISCUSSION...
PRECIPITATION ACROSS WEST CENTRAL AND NORTH CENTRAL OKLAHOMA HAS
WAVERED BETWEEN FREEZING AND FROZEN SINCE MIDNIGHT. MODELS ARE IN
GOOD AGREEMENT THAT THE THERMAL STRUCTURE WILL TRANSITION AROUND
SUNRISE IN CENTRAL AND SOUTHWEST OKLAHOMA TO SUPPORT SNOW. THIS
TRANSITION WILL OCCUR MID-DAY IN SOUTHEAST OKLAHOMA. AS THE UPPER
LOW MOVES FROM SOUTHEAST NEW MEXICO TOWARD SOUTHWEST OKLAHOMA AT
MID-DAY, THE LAST SIGNIFICANT SHORT WAVE TROUGH IS EXPECTED TO
PRODUCE SNOWFALL FROM THE VICINITY OF WICHITA FALLS TOWARD PAUL'S
VALLEY AND TOWARDS ADA AND SHAWNEE THIS AFTERNOON. ADDITIONALLY,
THE PATH OF THE STORM WILL REDUCE TEMPERATURES LOCALLY TO HELP
BRING THE SNOW LINE TOWARD COALGATE OR ARDMORE. THE RUC'S 16Z
FORECAST STARTS WITH UP TO 2 INCHES AROUND WICHITA FALLS AND THE
NAM AND GFS ARE QUITE SIMILAR IN PRODUCING AROUND 2 INCHES IN THE
ABOVE-MENTIONED PATH. THIS HAS PROMPTED A WINTER WEATHER ADVISORY
FOR THESE AREAS AFTER THE WARNING EXPIRES AT NOON. SNOWFALL IS NOT
EXPECTED TO EXCEED ADVISORY CRITERIA AND BY THE AFTERNOON THESE
AREAS ARE NOT EXPECTED TO HAVE MIXED PRECIPITATION. SOUTHEAST
OKLAHOMA'S FORECAST OF SNOW AND SLEET WILL IS STILL VALID.

THE COLD AIRMASS WILL REMAIN IN PLACE INTO SUNDAY. THERE IS A
SMALL CHANCE FOR RAIN IN THE CENTRAL THIRD OF OKLAHOMA MONDAY WITH
THE PASSAGE OF A WEAK WAVE IN FLOW TO THE NORTH OF OKLAHOMA. THE
BETTER CHANCE FOR RAIN IS WEDNESDAY OR THURSDAY WHEN A STRONGER
TROUGH APPROACHES FROM THE SOUTHWEST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 15 31 13 / 90 20 0 0
HOBART OK 24 14 29 17 / 60 0 0 0
WICHITA FALLS TX 31 18 32 21 / 60 10 0 0
GAGE OK 25 6 36 12 / 80 0 0 0
PONCA CITY OK 26 10 29 9 / 100 20 0 0
DURANT OK 35 21 34 23 / 100 10 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR
OKZ006>008-011>013-017>020-023>032-038>047.

WINTER STORM WARNING UNTIL NOON CST TODAY FOR OKZ004>047.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ048-
050>052.

TX...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TXZ090.

WINTER STORM WARNING UNTIL NOON CST TODAY FOR TXZ083>090.

&&

$$

03/26
TAYLOR
January 29, 2010 - 1048 AM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1048 AM CST FRI JAN 29 2010

OKZ019-020-025-026-028>032-040>043-046-047-300000-
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
/O.CON.KOUN.WW.Y.0003.100129T1800Z-100130T0000Z/
LOGAN-PAYNE-OKLAHOMA-LINCOLN-MCCLAIN-CLEVELAND-POTTAWATOMIE-
SEMINOLE-HUGHES-GARVIN-MURRAY-PONTOTOC-COAL-CARTER-JOHNSTON-
INCLUDING THE CITIES OF...GUTHRIE...STILLWATER...OKLAHOMA CITY...
CHANDLER...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...PAULS VALLEY...SULPHUR...ADA...COALGATE...ARDMORE...
TISHOMINGO
1048 AM CST FRI JAN 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. A
WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING.

* MAIN IMPACTS: SNOWFALL OF 1 TO 3 INCHES...WITH LOCALLY HIGHER
AMOUNTS UP TO 4 OR 5 INCHES POSSIBLE.

* TIMING: CONTINUING FROM THE MORNING...SNOW IS EXPECTED TO
PERSIST THROUGH THE AFTERNOON.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...AND SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ006>008-011>013-017-018-023-024-027-038-039-044-045-TXZ090-
300000-
/O.EXA.KOUN.WW.Y.0003.100129T1800Z-100130T0000Z/
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
ALFALFA-GRANT-KAY-MAJOR-GARFIELD-NOBLE-BLAINE-KINGFISHER-CADDO-
CANADIAN-GRADY-COMANCHE-STEPHENS-COTTON-JEFFERSON-CLAY-
INCLUDING THE CITIES OF...CHEROKEE...MEDFORD...PONCA CITY...
FAIRVIEW...ENID...PERRY...WATONGA...KINGFISHER...ANADARKO...
YUKON...EL RENO...MUSTANG...CHICKASHA...LAWTON...DUNCAN...
WALTERS...WAURIKA...HENRIETTA
1048 AM CST FRI JAN 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
UNTIL 6 PM CST THIS EVENING. A WINTER STORM WARNING REMAINS IN
EFFECT UNTIL NOON CST TODAY.

* MAIN IMPACTS: SNOWFALL OF 1 TO 3 INCHES.

* TIMING: CONTINUING FROM THE MORNING...SNOW IS EXPECTED TO
PERSIST THROUGH THE AFTERNOON.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...OR SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ004-005-009-010-014>016-021-022-033>037-TXZ083>089-291800-
/O.CON.KOUN.WS.W.0001.000000T0000Z-100129T1800Z/
HARPER-WOODS-ELLIS-WOODWARD-ROGER MILLS-DEWEY-CUSTER-BECKHAM-
WASHITA-HARMON-GREER-KIOWA-JACKSON-TILLMAN-HARDEMAN-FOARD-
WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-
INCLUDING THE CITIES OF...BUFFALO...ALVA...ARNETT...WOODWARD...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...ELK CITY...SAYRE...
CORDELL...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY
1048 AM CST FRI JAN 29 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY.

* OTHER IMPACTS: ICE COATED TREE LIMBS WILL CONTINUE TO BREAK
FROM ADDITIONAL ICE AND SWAYING IN THE WIND. IN ADDITION...
MANY PEOPLE ARE WITHOUT POWER...AND TEMPERATURES WILL REMAIN
BELOW FREEZING AFTER THE STORM ENDS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS THAT GUSTY WINDS AND SIGNIFICANT
AMOUNTS OF ICE AND SNOW ARE EXPECTED.

&&

$$

OKZ048-050>052-300000-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...ATOKA...MARIETTA...MADILL...DURANT
1048 AM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING.

* MAIN IMPACTS: LIGHT FREEZING RAIN...SLEET...AND SNOW WILL
DEVELOP IN SOUTHEAST OKLAHOMA.

* TIMING: THE MOST LIKELY TIME FOR WINTRY PRECIPITATION IS UNTIL
6 PM FRIDAY.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN...
SLEET...AND SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
January 29, 2010 - 1129 AM CST - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1129 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-301200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1129 AM CST FRI JAN 29 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
A POTENT UPPER LEVEL STORM WILL MOVE EAST ACROSS THE RED RIVER
VALLEY THIS AFTERNOON AND EVENING...RESULTING IN AREAS OF SNOW...
SLEET AND SOME FREEZING DRIZZLE. INSTABILITY IS EXPECTED TO BE
INSUFFICIENT TO SUPPORT THUNDER. PLEASE REFER TO THE LATEST WINTER
WEATHER ADVISORY FOR DETAILS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST SATURDAY JAN 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...5 PERCENT.

OTHER HAZARDOUS WEATHER...
ICE COATED TREES AND POWER LINES MAY CONTINUE TO FALL TO THE GROUND
AS THEY SWAY IN GUSTY NORTH WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO PARTS OF THE
AREA ON WEDNESDAY. THE CHANCE OF SEVERE WEATHER REMAINS LOW.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY
5 AM SATURDAY.

$$
January 29, 2010 - 1149 AM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1149 AM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-292000-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1149 AM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

AT JUST BEFORE NOON...A REGIONAL RADAR MOSAIC SHOWED WIDESPREAD
PRECIPITATION OCCURRING FROM SOUTHEAST OKLAHOMA...CURVING AROUND
THROUGH MOST OF THE WESTERN TWO THIRDS OF THE STATE. PRECIPITATION
WAS ALSO FALLING IN WESTERN NORTH TEXAS...APPROXIMATELY FROM WICHITA
FALLS EASTWARD. MOST OF THE PRECIPITATION WAS FALLING AS SNOW...
ALTHOUGH WITH THE SURFACE FREEZING LINE LOCATED BETWEEN HOLDENVILLE
AND ARDMORE...A MIX OF RAIN...FREEZING DRIZZLE...AND SLEET WAS
FALLING IN PORTIONS OF SOUTH CENTRAL AND SOUTHEAST OKLAHOMA.

THROUGH THIS AFTERNOON... MUCH OF THE CENTRAL THIRD OF OKLAHOMA IS
EXPECTED TO RECEIVE FROM ONE TO THREE INCHES OF SNOW. LOCALLY HIGHER
AMOUNTS WILL BE POSSIBLE...ESPECIALLY IN EAST CENTRAL OKLAHOMA. NEAR
THE RED RIVER AND INTO SOUTHWESTERN AND FAR WESTERN OKLAHOMA...
SNOWFALL SHOULD TOTAL LESS THAN ONE INCH. HOWEVER...IN ALL AREAS
HAVING RECEIVED ICE...NORTH WINDS BETWEEN 10 AND 15 MPH WILL
CONTINUE TO ADD STRESS TO TREE LIMBS AND POWER LINES. TEMPERATURES
WILL NOT RISE MUCH THIS AFTERNOON.

$$
January 29, 2010 - 133 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1235 PM CST FRI JAN 29 2010

.AVIATION...
MANY OF THE OBSERVATIONS FROM TAF SITES ARE OUT OR DEGRADED DUE TO
WIDESPREAD POWER OUTAGES IN SOUTHWESTERN OKLAHOMA FROM THE ICE
STORM YESTERDAY AND THIS MORNING - KLAW AND KHBR ARE UNAVAILABLE
AS WELL AS KFDR... AND KCSM IS DEGRADED. HAVE ISSUED TAFS FOR
THESE SITES BASED ON AS MUCH INFORMATION AS WE HAVE AVAILABLE BUT
HAVE INCLUDED "AMD NOT SKED" AS IT WILL BE DIFFICULT TO KNOW WHEN
AMENDMENT CRITERIA IS MET. OTHERWISE THE STORM SYSTEM RESPONSIBLE
FOR THE WINTER WEATHER IS CURRENTLY LOCATED IN WEST TEXAS AND
MOVING EAST TOWARD NORTH TEXAS. PRECIPITATION /MAINLY SNOW/
PERSIST AHEAD OF THIS SYSTEM ACROSS MOST OF THE NORMAN TAF
SITES... EXCEPT FOR SOMEWHAT DRIER AIR MOVING INTO KSPS. THE SNOW
WILL PERSIST ACROSS MUCH OF THE AREA INTO THIS AFTERNOON AND
SLOWLY DECREASE FROM WEST TO EAST AS THE STORM SYSTEM MOVES
EAST... BUT LOW CIGS WILL CONTINUE THROUGH MOST OF THE VALID TIME
OF THE TAFS.

&&

.PREV DISCUSSION... /ISSUED 1044 AM CST FRI JAN 29 2010/

UPDATE...
RADAR AND SURFACE OBSERVATIONS...AS WELL AS SHORT TERM MODEL
DATA...INDICATE THAT CONDITIONS ARE FAVORABLE FOR ACCUMULATING
SNOW ACROSS MAINLY THE EASTERN TWO THIRDS OF THE CWA THIS
AFTERNOON. TOTALS FROM THIS MORNING THROUGH THIS AFTERNOON ARE
EXPECTED TO RANGE FROM ONE TO THREE INCHES...WITH LOCALLY HIGHER
AMOUNTS. THE WINTER WX ADVISORY FOR THIS AFTERNOON HAS BEEN
EXTENDED TO THE WEST BY A COUPLE ROWS OF COUNTIES. A MIX OF
FREEZING DRIZZLE AND SLEET IS EXPECTED IN SOUTHEAST OK PRIOR TO A
CHANGEOVER TO ALL SNOW BY LATE AFTERNOON OR SO.

HOURLY TEMPERATURE AND WIND GRIDS HAVE BEEN UPDATED...AS WELL AS
PRECIP CHANCES.

PREV DISCUSSION... /ISSUED 543 AM CST FRI JAN 29 2010/

AVIATION...
IFR CONDITIONS IN LOW CEILINGS ARE EXPECTED THROUGH 301200.
FREEZING DRIZZLE IS WIDESPREAD THIS MORNING. SNOW WILL MOVE FROM
SOUTHWEST TO CENTRAL OKLAHOMA LATER TODAY. FLURRIES WILL EXIST
BEYOND 300000.

PREV DISCUSSION... /ISSUED 339 AM CST FRI JAN 29 2010/

DISCUSSION...
PRECIPITATION ACROSS WEST CENTRAL AND NORTH CENTRAL OKLAHOMA HAS
WAVERED BETWEEN FREEZING AND FROZEN SINCE MIDNIGHT. MODELS ARE IN
GOOD AGREEMENT THAT THE THERMAL STRUCTURE WILL TRANSITION AROUND
SUNRISE IN CENTRAL AND SOUTHWEST OKLAHOMA TO SUPPORT SNOW. THIS
TRANSITION WILL OCCUR MID-DAY IN SOUTHEAST OKLAHOMA. AS THE UPPER
LOW MOVES FROM SOUTHEAST NEW MEXICO TOWARD SOUTHWEST OKLAHOMA AT
MID-DAY, THE LAST SIGNIFICANT SHORT WAVE TROUGH IS EXPECTED TO
PRODUCE SNOWFALL FROM THE VICINITY OF WICHITA FALLS TOWARD PAUL'S
VALLEY AND TOWARDS ADA AND SHAWNEE THIS AFTERNOON. ADDITIONALLY,
THE PATH OF THE STORM WILL REDUCE TEMPERATURES LOCALLY TO HELP
BRING THE SNOW LINE TOWARD COALGATE OR ARDMORE. THE RUC'S 16Z
FORECAST STARTS WITH UP TO 2 INCHES AROUND WICHITA FALLS AND THE
NAM AND GFS ARE QUITE SIMILAR IN PRODUCING AROUND 2 INCHES IN THE
ABOVE-MENTIONED PATH. THIS HAS PROMPTED A WINTER WEATHER ADVISORY
FOR THESE AREAS AFTER THE WARNING EXPIRES AT NOON. SNOWFALL IS NOT
EXPECTED TO EXCEED ADVISORY CRITERIA AND BY THE AFTERNOON THESE
AREAS ARE NOT EXPECTED TO HAVE MIXED PRECIPITATION. SOUTHEAST
OKLAHOMA'S FORECAST OF SNOW AND SLEET WILL IS STILL VALID.

THE COLD AIRMASS WILL REMAIN IN PLACE INTO SUNDAY. THERE IS A
SMALL CHANCE FOR RAIN IN THE CENTRAL THIRD OF OKLAHOMA MONDAY WITH
THE PASSAGE OF A WEAK WAVE IN FLOW TO THE NORTH OF OKLAHOMA. THE
BETTER CHANCE FOR RAIN IS WEDNESDAY OR THURSDAY WHEN A STRONGER
TROUGH APPROACHES FROM THE SOUTHWEST.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 27 15 31 13 / 90 20 0 0
HOBART OK 24 14 29 17 / 60 0 0 0
WICHITA FALLS TX 31 18 32 21 / 60 10 0 0
GAGE OK 25 6 36 12 / 80 0 0 0
PONCA CITY OK 26 10 29 9 / 100 20 0 0
DURANT OK 35 21 34 23 / 100 10 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR
OKZ006>008-011>013-017>020-023>032-038>048-050>052.

TX...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TXZ090.

&&

$$
January 29, 2010 - 133 PM CST - Significant Weather Advisory Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
121 PM CST FRI JAN 29 2010

OKZ024-025-029-030-292000-
CANADIAN OK-OKLAHOMA OK-POTTAWATOMIE OK-CLEVELAND OK-
121 PM CST FRI JAN 29 2010

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CANADIAN...CLEVELAND...
OKLAHOMA AND POTTAWATOMIE COUNTIES.

A BAND OF HEAVIER SNOW WILL BE MOVING THROUGH CANADIAN COUNTY... THE
OKLAHOMA CITY METRO...AND AREAS TO THE EAST....INCLUDING SHAWNEE...
THROUGH 3 PM. SNOWFALL RATES AROUND AN INCH PER HOUR WILL BE
POSSIBLE.

SNOW SHOULD THEN BEGIN TO DECREASE THROUGH THE LATE AFTERNOON.

$$

LAT...LON 3497 9678 3505 9718 3528 9756 3530 9757
3530 9760 3565 9823 3569 9724 3554 9714
3547 9714 3547 9709
January 29, 2010 - 133 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
133 PM CST FRI JAN 29 2010

OKZ006>008-011>013-017>020-023>032-038>048-050>052-TXZ090-300000-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ALFALFA-GRANT-KAY-MAJOR-GARFIELD-NOBLE-BLAINE-KINGFISHER-LOGAN-
PAYNE-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-COMANCHE-STEPHENS-GARVIN-MURRAY-
PONTOTOC-COAL-COTTON-JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-
MARSHALL-BRYAN-CLAY-
INCLUDING THE CITIES OF...CHEROKEE...MEDFORD...PONCA CITY...
FAIRVIEW...ENID...PERRY...WATONGA...KINGFISHER...GUTHRIE...
STILLWATER...ANADARKO...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...SEMINOLE...HOLDENVILLE...LAWTON...DUNCAN...
PAULS VALLEY...SULPHUR...ADA...COALGATE...WALTERS...WAURIKA...
ARDMORE...TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT...
HENRIETTA
133 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...


* MAIN IMPACTS: SNOWFALL OF 1 TO 3 INCHES...WITH LOCALLY HIGHER
AMOUNTS UP TO 4 OR 5 INCHES POSSIBLE.

* TIMING: SNOW IS EXPECTED TO PERSIST THROUGH THE MID TO LATE
AFTERNOON.

* OTHER IMPACTS: GUSTY NORTH AND NORTHEAST WINDS OF 15 TO 20 MPH
WILL ADD STRESS TO TREE LIMBS AND POWER LINES THAT MAY HAVE
ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.
January 29, 2010 - 210 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
210 PM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-292200-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
210 PM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

AT 2 PM...THE CENTER OF AN UPPER LOW WAS LOCATED BETWEEN ABILENE AND
WICHITA FALLS TEXAS. WIDESPREAD PRECIPITATION WAS OCCURRING TO THE
NORTH AND EAST OF THIS LOW CENTER... FROM WEST CENTRAL OKLAHOMA...
BACK THROUGH MUCH OF NORTHERN AND CENTRAL OKLAHOMA. MOST OF THIS
PRECIPITATION WAS FALLING AS SNOW...WITH SOME RAIN AND SLEET IN
AREAS OF ATOKA AND BRYAN COUNTY WHERE THE NEAR SURFACE AIR
TEMPERATURE HAD NOT FALLEN BELOW FREEZING.

THROUGH THE REMAINDER OF THIS AFTERNOON... SNOW WILL CONTINUE EAST
OF A LINE FROM DUNCAN...TO WEATHERFORD... TO FAIRVIEW AND CHEROKEE.
SNOW WILL FALL AT RATES OF ONE HALF INCH AN HOUR OR LESS ON THE
AVERAGE...WITH SOME HEAVY BANDS BRINGING RATES UP TO AN INCH PER
HOUR. POOR VISIBILITY WILL OCCUR IN THE HEAVY BANDS. ONE TO THREE
INCHES OF ADDITIONAL SNOW ACCUMULATION IS LIKELY THROUGH MUCH OF
CENTRAL AND NORTHERN OKLAHOMA...WITH LOCALLY HIGHER AMOUNTS. NEAR
THE RED RIVER AND INTO SOUTHWESTERN AND FAR WESTERN OKLAHOMA...
SNOWFALL SHOULD TOTAL LESS THAN ONE INCH. HOWEVER...IN ALL AREAS
HAVING RECEIVED ICE...NORTH WINDS BETWEEN 10 AND 15 MPH WILL
CONTINUE TO ADD STRESS TO TREE LIMBS AND POWER LINES. TEMPERATURES
WILL NOT RISE MUCH THIS AFTERNOON.

$$
January 29, 2010 - 242 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
242 PM CST FRI JAN 29 2010

.DISCUSSION...
UPPER LOW RESPONSIBLE FOR THIS ROUND OF WINTER WEATHER IS SPEEDING
UP AS IT MOVES EAST/NORTHEAST. DRY SLOT HAS MOVED THROUGH SOUTH
CENTRAL AND INTO CENTRAL OKLAHOMA... BUT WIDESPREAD SNOW
CONTINUES FARTHER NORTH ACROSS CENTRAL AND NORTH CENTRAL OKLAHOMA
WITH SNOWFALL OF 1 INCH/HOUR IN SOME AREAS. AS DRY SLOT CONTINUES
TO MOVE NORTH... THE HEAVIER SNOW WILL DIMINISH TO FLURRIES.
DEPENDING ON HOW FAR NORTH THIS DRY SLOT CAN MOVE... THERE MAY BE
A EAST-WEST BAND SET UP AND PERSIST FOR A COUPLE OF HOURS BEFORE
ENDING SOMEWHERE NORTH OF OKC... BUT DO NOT EXPECT A PROLONGED
ENHANCEMENT WITH WAVE OPENING UP. EXPECT SNOW TO BE CONTINUING IN
AT LEAST NORTH CENTRAL OKLAHOMA AT 00Z SO WILL MAINTAIN LIKELY
POPS IN THE NORTH AND KEEP LOWER POPS AND AREAL COVERAGE WORDING
OR MENTION OF FLURRIES FARTHER SOUTH AND WEST. WILL NOT EXTEND
THE TIME PERIOD OF THE ADVISORY AT THIS TIME AS HEAVIER
PRECIPITATION SHOULD BE WANING BY 00Z AND ENDING SHORTLY
THEREAFTER. WILL LET EVENING SHIFT DECIDE IF A SUBSET OF THE
ADVISORY NEEDS TO BE EXTENDED FOR A SHORT PERIOD OF TIME.

WILL GO ON THE COOL SIDE OF GUIDANCE RANGE WITH TEMPERATURES OVER
THE NEXT COUPLE OF DAYS WITH THE FRESH SNOW/ICE COVER ON THE
GROUND. ONE STORM SYSTEM MOVES THROUGH THE NORTHERN/CENTRAL PLAINS
ON MONDAY WHICH WILL BRING A WEAK FRONT AND SLIGHT CHANCE OF RAIN
MONDAY/MONDAY NIGHT. ANOTHER WAVE APPROACHES THE SOUTHERN PLAINS
FROM THE WEST MID WEEK WITH HIGHER PRECIPITATION CHANCES /MAINLY
RAIN/.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 17 29 14 37 / 30 0 0 0
HOBART OK 16 32 18 38 / 10 0 0 0
WICHITA FALLS TX 20 35 21 44 / 10 0 0 0
GAGE OK 7 30 12 38 / 10 0 0 0
PONCA CITY OK 12 27 9 32 / 60 0 0 0
DURANT OK 23 32 22 41 / 30 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR
OKZ006>008-011>013-017>020-023>032-038>048-050>052.

TX...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TXZ090.

&&

$$
January 29, 2010 - 353 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
353 PM CST FRI JAN 29 2010

OKZ007-008-012-013-018>020-024>032-300600-
/O.EXT.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...SEMINOLE...HOLDENVILLE
353 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* MAIN IMPACTS: ADDITIONAL SNOWFALL OF 1 TO 3 INCHES WILL BE
POSSIBLE THROUGH MIDNIGHT.

* TIMING: SNOW IS EXPECTED TO PERSIST THROUGH TONIGHT.

* OTHER IMPACTS: NORTH WINDS FROM 10 TO 15 MPH WILL ADD STRESS TO
TREE LIMBS AND POWER LINES WITH ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

OKZ006-011-017-023-038>048-050>052-TXZ090-300000-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ALFALFA-MAJOR-BLAINE-CADDO-COMANCHE-STEPHENS-GARVIN-MURRAY-
PONTOTOC-COAL-COTTON-JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-
MARSHALL-BRYAN-CLAY-
INCLUDING THE CITIES OF...CHEROKEE...FAIRVIEW...WATONGA...
ANADARKO...LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
COALGATE...WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...
MARIETTA...MADILL...DURANT...HENRIETTA
353 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING.

* MAIN IMPACTS: TOTAL SNOWFALL OF 1 TO 3 INCHES...WITH LOCALLY
HIGHER AMOUNTS UP TO 4 OR 5 INCHES POSSIBLE.

* TIMING: SNOW IS EXPECTED TO PERSIST THROUGH THE MID TO LATE
AFTERNOON.

* OTHER IMPACTS: NORTH WINDS FROM 10 TO 15 MPH WILL ADD STRESS TO
TREE LIMBS AND POWER LINES WITH ICE ACCUMULATIONS.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
January 29, 2010 - 424 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
424 PM CST FRI JAN 29 2010

.UPDATE...
WE HAVE ELECTED TO EXTEND THE WINTER WEATHER ADVISORY THROUGH
MIDNIGHT FROM CENTRAL AND EAST CENTRAL UP THROUGH NORTHERN
OKLAHOMA. THOUGH SNOWFALL RATES ARE STILL EXPECTED TO GRADUALLY
WIND DOWN THROUGH THIS EVENING...SLOW MIGRATION OF THE LOW CENTER
ACROSS CENTRAL OK WILL LIKELY KEEP FLURRIES GOING FOR A WHILE.
POPS...QPF...AND SNOW AMOUNT GRIDS HAVE BEEN UPDATED ACCORDINGLY.

&&

.PREV DISCUSSION... /ISSUED 242 PM CST FRI JAN 29 2010/

DISCUSSION...
UPPER LOW RESPONSIBLE FOR THIS ROUND OF WINTER WEATHER IS SPEEDING
UP AS IT MOVES EAST/NORTHEAST. DRY SLOT HAS MOVED THROUGH SOUTH
CENTRAL AND INTO CENTRAL OKLAHOMA... BUT WIDESPREAD SNOW
CONTINUES FARTHER NORTH ACROSS CENTRAL AND NORTH CENTRAL OKLAHOMA
WITH SNOWFALL OF 1 INCH/HOUR IN SOME AREAS. AS DRY SLOT CONTINUES
TO MOVE NORTH... THE HEAVIER SNOW WILL DIMINISH TO FLURRIES.
DEPENDING ON HOW FAR NORTH THIS DRY SLOT CAN MOVE... THERE MAY BE
A EAST-WEST BAND SET UP AND PERSIST FOR A COUPLE OF HOURS BEFORE
ENDING SOMEWHERE NORTH OF OKC... BUT DO NOT EXPECT A PROLONGED
ENHANCEMENT WITH WAVE OPENING UP. EXPECT SNOW TO BE CONTINUING IN
AT LEAST NORTH CENTRAL OKLAHOMA AT 00Z SO WILL MAINTAIN LIKELY
POPS IN THE NORTH AND KEEP LOWER POPS AND AREAL COVERAGE WORDING
OR MENTION OF FLURRIES FARTHER SOUTH AND WEST. WILL NOT EXTEND
THE TIME PERIOD OF THE ADVISORY AT THIS TIME AS HEAVIER
PRECIPITATION SHOULD BE WANING BY 00Z AND ENDING SHORTLY
THEREAFTER. WILL LET EVENING SHIFT DECIDE IF A SUBSET OF THE
ADVISORY NEEDS TO BE EXTENDED FOR A SHORT PERIOD OF TIME.

WILL GO ON THE COOL SIDE OF GUIDANCE RANGE WITH TEMPERATURES OVER
THE NEXT COUPLE OF DAYS WITH THE FRESH SNOW/ICE COVER ON THE
GROUND. ONE STORM SYSTEM MOVES THROUGH THE NORTHERN/CENTRAL PLAINS
ON MONDAY WHICH WILL BRING A WEAK FRONT AND SLIGHT CHANCE OF RAIN
MONDAY/MONDAY NIGHT. ANOTHER WAVE APPROACHES THE SOUTHERN PLAINS
FROM THE WEST MID WEEK WITH HIGHER PRECIPITATION CHANCES /MAINLY
RAIN/.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 17 29 14 37 / 70 0 0 0
HOBART OK 16 32 18 38 / 20 0 0 0
WICHITA FALLS TX 20 35 21 44 / 20 0 0 0
GAGE OK 7 30 12 38 / 10 0 0 0
PONCA CITY OK 12 27 9 32 / 80 0 0 0
DURANT OK 23 32 22 41 / 80 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR OKZ007-
008-012-013-018>020-024>032.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ006-
011-017-023-038>048-050>052.

TX...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TXZ090.

&&

$$

03/32
TAYLOR
January 29, 2010 - 601 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
601 PM CST FRI JAN 29 2010

.AVIATION...
THE AREA OF SNOW OVER CENTRAL AND NORTH CENTRAL OKLAHOMA WILL
CONTINUE TO QUICKLY SHIFT NORTHEAST OUT OF THE AREA EARLY THIS
EVENING. ALTHOUGH CEILINGS MAY LIFT FOR A SHORT TIME WITH THE EXIT
OF THE UPPER STORM SYSTEM... A LOW STRATUS CLOUDY DECK WILL REFORM
AND DOMINATE MOST OF THE TERMINAL SITES UNTIL LATE SATURDAY
AFTERNOON. AREAS OF FOG WILL ALSO DEVELOP OVERNIGHT REDUCING
VISIBILITIES AT TIMES TO 2 TO 4 MILES.

NOTE...MANY OF THE OBSERVATIONS FROM TAF SITES ARE OUT OR DEGRADED
DUE TO WIDESPREAD POWER OUTAGES IN SOUTHWESTERN OKLAHOMA FROM THE
RECENT ICE STORM. KLAW... KHBR... AND KFDR ARE UNAVAILABLE WHILE
KCSM IS DEGRADED. HAVE ISSUED TAFS FOR KCSM... KHBR...KLAW BASED
ON AS MUCH INFORMATION AS IS AVAILABLE BUT HAVE INCLUDED "AMD NOT SKED"
DUE TO THE DIFFICULTLY IN KNOWING WHEN AMENDMENT CRITERIA IS MET.

&&

.PREV DISCUSSION... /ISSUED 424 PM CST FRI JAN 29 2010/

UPDATE...
WE HAVE ELECTED TO EXTEND THE WINTER WEATHER ADVISORY THROUGH
MIDNIGHT FROM CENTRAL AND EAST CENTRAL UP THROUGH NORTHERN
OKLAHOMA. THOUGH SNOWFALL RATES ARE STILL EXPECTED TO GRADUALLY
WIND DOWN THROUGH THIS EVENING...SLOW MIGRATION OF THE LOW CENTER
ACROSS CENTRAL OK WILL LIKELY KEEP FLURRIES GOING FOR A WHILE.
POPS...QPF...AND SNOW AMOUNT GRIDS HAVE BEEN UPDATED ACCORDINGLY.

PREV DISCUSSION... /ISSUED 242 PM CST FRI JAN 29 2010/

DISCUSSION...
UPPER LOW RESPONSIBLE FOR THIS ROUND OF WINTER WEATHER IS SPEEDING
UP AS IT MOVES EAST/NORTHEAST. DRY SLOT HAS MOVED THROUGH SOUTH
CENTRAL AND INTO CENTRAL OKLAHOMA... BUT WIDESPREAD SNOW
CONTINUES FARTHER NORTH ACROSS CENTRAL AND NORTH CENTRAL OKLAHOMA
WITH SNOWFALL OF 1 INCH/HOUR IN SOME AREAS. AS DRY SLOT CONTINUES
TO MOVE NORTH... THE HEAVIER SNOW WILL DIMINISH TO FLURRIES.
DEPENDING ON HOW FAR NORTH THIS DRY SLOT CAN MOVE... THERE MAY BE
A EAST-WEST BAND SET UP AND PERSIST FOR A COUPLE OF HOURS BEFORE
ENDING SOMEWHERE NORTH OF OKC... BUT DO NOT EXPECT A PROLONGED
ENHANCEMENT WITH WAVE OPENING UP. EXPECT SNOW TO BE CONTINUING IN
AT LEAST NORTH CENTRAL OKLAHOMA AT 00Z SO WILL MAINTAIN LIKELY
POPS IN THE NORTH AND KEEP LOWER POPS AND AREAL COVERAGE WORDING
OR MENTION OF FLURRIES FARTHER SOUTH AND WEST. WILL NOT EXTEND
THE TIME PERIOD OF THE ADVISORY AT THIS TIME AS HEAVIER
PRECIPITATION SHOULD BE WANING BY 00Z AND ENDING SHORTLY
THEREAFTER. WILL LET EVENING SHIFT DECIDE IF A SUBSET OF THE
ADVISORY NEEDS TO BE EXTENDED FOR A SHORT PERIOD OF TIME.

WILL GO ON THE COOL SIDE OF GUIDANCE RANGE WITH TEMPERATURES OVER
THE NEXT COUPLE OF DAYS WITH THE FRESH SNOW/ICE COVER ON THE
GROUND. ONE STORM SYSTEM MOVES THROUGH THE NORTHERN/CENTRAL PLAINS
ON MONDAY WHICH WILL BRING A WEAK FRONT AND SLIGHT CHANCE OF RAIN
MONDAY/MONDAY NIGHT. ANOTHER WAVE APPROACHES THE SOUTHERN PLAINS
FROM THE WEST MID WEEK WITH HIGHER PRECIPITATION CHANCES /MAINLY
RAIN/.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 17 29 14 37 / 70 0 0 0
HOBART OK 16 32 18 38 / 20 0 0 0
WICHITA FALLS TX 20 35 21 44 / 20 0 0 0
GAGE OK 7 30 12 38 / 10 0 0 0
PONCA CITY OK 12 27 9 32 / 80 0 0 0
DURANT OK 23 32 22 41 / 80 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR OKZ007-
008-012-013-018>020-024>032.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR OKZ006-
011-017-023-038>048-050>052.

TX...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TXZ090.

&&

$$

22/26/32
January 29, 2010 - 603 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
603 PM CST FRI JAN 29 2010

OKZ006-011-017-023-038>048-050>052-TXZ090-300115-
/O.EXP.KOUN.WW.Y.0003.000000T0000Z-100130T0000Z/
ALFALFA-MAJOR-BLAINE-CADDO-COMANCHE-STEPHENS-GARVIN-MURRAY-
PONTOTOC-COAL-COTTON-JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-
MARSHALL-BRYAN-CLAY-
INCLUDING THE CITIES OF...CHEROKEE...FAIRVIEW...WATONGA...
ANADARKO...LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
COALGATE...WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...
MARIETTA...MADILL...DURANT...HENRIETTA
603 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

ACCUMULATING SNOWFALL HAD ENDED. WITH TEMPERATURES WELL BELOW
FREEZING...THE EXISTING SNOW AND ICE PACK WILL MAINTAIN HAZARDOUS
CONDITIONS ON ROADS AND SIDEWALKS.

$$

OKZ007-008-012-013-018>020-024>032-300600-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...SEMINOLE...HOLDENVILLE
603 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* MAIN IMPACTS: ADDITIONAL SNOWFALL OF ONE HALF INCH TO TWO INCHES.

* OTHER IMPACTS: NORTH WINDS FROM 10 TO 15 MPH WILL ADD STRESS TO
TREE LIMBS AND POWER LINES ALREADY WEIGHTED DOWN WITH SNOW AND
ICE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND SIDEWALKS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING OR SPENDING
TIME OUTDOORS.

&&

$$

BURKE
January 29, 2010 - 700 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
700 PM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-300300-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
700 PM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...

THIS EVENING...THE CENTER OF AN UPPER LEVEL LOW WILL TRACK FROM
CENTRAL OKLAHOMA TOWARD THE EAST...TAKING THE LAST OF LIGHT FALLING
SNOW INTO EASTERN OKLAHOMA. THE LOW WAS BECOMING ABSORBED BY A
TROUGH ARRIVING IN NORTHWESTERLY FLOW ALOFT...AND THIS WILL CAUSE
THE CLOSED CIRCULATION TO OPEN UP AND WEAKEN. RADAR RETURNS ALREADY
SHOWED A SHARP DECREASE TO THE INTENSITY OF THE SNOW...FALLING EAST
OF A LINE FROM STILLWATER TO OKLAHOMA CITY. THIS AREA WILL LIKELY
SEE ONLY A TRACE OF ADDITIONAL SNOWFALL...WHILE SOME LOCATIONS MAY
RECEIVE BETWEEN A HALF INCH AND ONE INCH BY 10 PM.

BEHIND THE EXITING STORM...SURFACE HIGH PRESSURE WILL GRADUALLY
BUILD...AND WINDS WILL DIMINISH. TEMPERATURES WILL REMAIN IN THE
TEENS AND LOW 20S OVERNIGHT...BENEATH MOSTLY CLOUDY SKIES. ALTHOUGH
PRECIPITATION WILL END...THE EXISTING ICE AND SNOW PACK WILL
MAINTAIN HAZARDOUS OUTDOOR CONDITIONS. UNTREATED ROADS AND SIDEWALKS
WILL REMAIN VERY SLICK...AND TREE LIMBS MAY CONTINUE TO BREAK AND
FALL UNDER THE WEIGHT OF ICE AND SNOW. TRAVEL IS DISCOURAGED...AND
ANYONE SPENDING TIME OUTDOORS SHOULD USE EXTREME CAUTION.

$$

BURKE


FLUS44 KOUN 300114
HWOOUN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
715 PM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-301100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
715 PM CST FRI JAN 29 2010

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS EVENING AND TONIGHT.

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
LIGHT SNOW WILL MOVE INTO EASTERN OKLAHOMA AND END BY MIDNIGHT...AS
AN UPPER LEVEL STORM WEAKENS AND EXITS THE REGION.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST SATURDAY JAN 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...ZERO PERCENT.

OTHER HAZARDOUS WEATHER...
ALTHOUGH WIND SPEEDS WILL AVERAGE ONLY 5 TO 15 MPH TONIGHT...TREE
LIMBS AND POWER LINES ARE STILL AT RISK OF FALLING TO THE GROUND
UNDER THE WEIGHT OF EXISTING ICE AND SNOW. ROADS AND SIDEWALKS WILL
ALSO REMAIN SLICK AND HAZARDOUS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
A STORM SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO PARTS OF THE
AREA ON WEDNESDAY. THE CHANCE OF SEVERE WEATHER REMAINS LOW.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY
5 AM SATURDAY.

$$

BURKE
January 29, 2010 - 816 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
816 PM CST FRI JAN 29 2010

OKZ007-008-012-013-018>020-024>032-300600-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...SEMINOLE...HOLDENVILLE
816 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* MAIN IMPACTS: ADDITIONAL SNOWFALL OF ONE HALF INCH TO ONE
INCH...AND BRIEF REDUCTION TO VISIBILITY DURING FALLING SNOW.

* OTHER IMPACTS: NORTH WINDS FROM 10 TO 15 MPH WILL ADD STRESS
TO TREE LIMBS AND POWER LINES ALREADY WEIGHTED DOWN WITH SNOW
AND ICE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND SIDEWALKS
AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING OR
SPENDING TIME OUTDOORS.

&&

$$

BURKE
January 29, 2010 - 836 PM CST - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
836 PM CST FRI JAN 29 2010

.UPDATE...EARLY EVENING SATELLITE LOOPS SHOWED A WELL DEFINED JET
STREAK EXITING OKLAHOMA TOWARD THE EAST. THIS CARVED OUT HEIGHT
FALLS ALLOWING THE UPPER LOW TO REFORM TO OUR EAST...WHILE THE
EXISTING CIRCULATION IN CENTRAL OKLAHOMA WEAKENS AND BECOMES AND
OPEN TROUGH. MID EVENING RADAR IMAGERY AND SURFACE OBS INDICATED A
MARKED DECREASE IN THE COVERAGE AND INTENSITY OF SNOW.
ACCUMULATING SNOW HAD LIKELY ENDED. STILL...ONE SMALL BATCH
SIGNIFICANTLY REDUCED VISIBILITY WHEN IT PASSED OVER THE NWS
FORECAST OFFICE. GIVEN THE EXISTING ICE AND SNOW PACK AND TRAVEL
DIFFICULTIES...WE WILL KEEP THE WINTER WEATHER ADVISORY IN PLACE A
WHILE LONGER BEFORE CLEARING FROM WEST TO EAST.

MEANWHILE...SHORT RANGE MODELS SHOW A GRADUAL DRYING OF THE LOW
AND MID LEVELS FROM NORTHWEST TO SOUTHEAST OVERNIGHT. SATELLITE
DID SHOW BREAKS IN THE CLOUDS OVER WESTERN NORTH TEXAS AND
NORTHWEST OKLAHOMA. WE ANTICIPATE PARTIAL CLEARING WILL ADVANCE
EASTWARD...AND THAT SKIES SHOULD BECOME PARTLY TO MOSTLY SUNNY ON
SATURDAY. TEMPERATURES WILL LARGELY REMAIN BELOW FREEZING...BUT
THE SUN WILL HELP MELT ICE OFF OF TREE LIMBS AND POWER LINES.

&&

BURKE

&&

.PREV DISCUSSION... /ISSUED 601 PM CST FRI JAN 29 2010/

AVIATION...
THE AREA OF SNOW OVER CENTRAL AND NORTH CENTRAL OKLAHOMA WILL
CONTINUE TO QUICKLY SHIFT NORTHEAST OUT OF THE AREA EARLY THIS
EVENING. ALTHOUGH CEILINGS MAY LIFT FOR A SHORT TIME WITH THE EXIT
OF THE UPPER STORM SYSTEM... A LOW STRATUS CLOUDY DECK WILL REFORM
AND DOMINATE MOST OF THE TERMINAL SITES THROUGH EARLY SATURDAY
MORNING. AREAS OF SHALLOW FOG WILL ALSO DEVELOP OVERNIGHT REDUCING
VISIBILITIES AT TIMES TO 2 TO 4 MILES.

NOTE...MANY OF THE OBSERVATIONS FROM TAF SITES ARE OUT OR DEGRADED
DUE TO WIDESPREAD POWER OUTAGES IN SOUTHWESTERN OKLAHOMA FROM THE
RECENT ICE STORM. KLAW... KHBR... AND KFDR ARE UNAVAILABLE WHILE
KCSM IS DEGRADED. WE HAVE ISSUED TAFS FOR KCSM... KHBR...KLAW
BASED ON AS MUCH INFORMATION AS IS AVAILABLE BUT HAVE INCLUDED
"AMD NOT SKED" DUE TO THE DIFFICULTLY IN KNOWING WHEN AMENDMENT
CRITERIA IS MET.

&&

PREV DISCUSSION... /ISSUED 242 PM CST FRI JAN 29 2010/

DISCUSSION...
WE WILL GO ON THE COOL SIDE OF GUIDANCE RANGE WITH TEMPERATURES
OVER THE NEXT COUPLE OF DAYS WITH THE FRESH SNOW/ICE COVER ON THE
GROUND. ONE STORM SYSTEM MOVES THROUGH THE NORTHERN/CENTRAL PLAINS
ON MONDAY WHICH WILL BRING A WEAK FRONT AND SLIGHT CHANCE OF RAIN
MONDAY/MONDAY NIGHT. ANOTHER WAVE APPROACHES THE SOUTHERN PLAINS
FROM THE WEST MID WEEK WITH HIGHER PRECIPITATION CHANCES /MAINLY
RAIN/.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 17 29 14 37 / 20 0 0 0
HOBART OK 16 32 18 38 / 0 0 0 0
WICHITA FALLS TX 20 35 21 44 / 10 0 0 0
GAGE OK 7 30 12 38 / 0 0 0 0
PONCA CITY OK 12 27 9 32 / 10 0 0 0
DURANT OK 23 32 22 41 / 20 0 0 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER WEATHER ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR OKZ007-
008-012-013-018>020-024>032.

TX...NONE.
&&

$$

22/32
January 29, 2010 - 916 PM CST - Regional Weather Discussion Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
916 PM CST FRI JAN 29 2010

OKZ004>048-050>052-TXZ083>090-300515-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
916 PM CST FRI JAN 29 2010

.REGIONAL WEATHER DISCUSSION...
LIFTING AND PRODUCTION OF SNOW WAS QUICKLY DECREASING WITHIN THE
BASE OF A WEAKENING UPPER LEVEL TROUGH...OVER EAST CENTRAL OKLAHOMA.
A FEW SNOW SHOWERS WILL BRIEFLY REDUCE VISIBILITY...WHILE PRODUCING
LESS THAN A HALF INCH OF NEW SNOW...TO THE EAST OF A LINE FROM
CHANDLER TO PAULS VALLEY. ELSEWHERE...FLURRIES WILL END...WHILE COLD
OVERCAST WEATHER CONTINUES. AS AIR SUBSIDES BEHIND THE STORM
SYSTEM...AND WINDS TURN TO THE NORTHWEST THROUGHOUT THE DEPTH OF THE
ATMOSPHERE...CLOUD COVER WILL BEGIN TO DECREASE FROM WEST TO EAST.
AT 9 PM...SATELLITE IMAGERY SHOWED SOME BREAKS IN THE CLOUDS NEAR
BUFFALO...HOLLIS...AND CROWELL. TEMPERATURES WERE IN THE UPPER TEENS
AND LOW 20S THROUGHOUT OKLAHOMA AND WESTERN NORTH TEXAS. OVERNIGHT
LOWS WILL DROP BELOW 10 DEGREES IN NORTHWEST OKLAHOMA...AND BETWEEN
10 AND 20 DEGREES ELSEWHERE. NORTHWEST WINDS WILL AVERAGE 5 TO 12
MPH.

ALTHOUGH PRECIPITATION WILL END...THE EXISTING ICE AND SNOW PACK
WILL MAINTAIN HAZARDOUS OUTDOOR CONDITIONS. UNTREATED ROADS AND
SIDEWALKS WILL REMAIN VERY SLICK...AND TREE LIMBS MAY CONTINUE TO
BREAK AND FALL UNDER THE WEIGHT OF ICE AND SNOW. TRAVEL IS
DISCOURAGED...AND ANYONE SPENDING TIME OUTDOORS SHOULD USE EXTREME
CAUTION.

$$

BURKE
January 29, 2010 - 922 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
922 PM CST FRI JAN 29 2010

OKZ007-008-012-013-018>020-024>030-300430-
/O.CAN.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE
922 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE WINTER
WEATHER ADVISORY.

SNOW SHOWERS HAD ENDED IN MUCH OF CENTRAL AND NORTHERN OKLAHOMA.
FLURRIES REMAIN POSSIBLE...BUT WITH NO SIGNIFICANT REDUCTION TO
VISIBILITY...AND NO ACCUMULATION. WITH TEMPERATURES WELL BELOW
FREEZING...THE EXISTING ICE AND SNOW PACK WILL STILL MAINTAIN
HAZARDOUS CONDITIONS ON UNTREATED ROADS AND SIDEWALKS.

$$

OKZ031-032-300600-
/O.CON.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
SEMINOLE-HUGHES-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE
922 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT.

* MAIN IMPACTS: ADDITIONAL SNOWFALL OF ONE HALF INCH...AND BRIEF
REDUCTION TO VISIBILITY DURING FALLING SNOW.

* OTHER IMPACTS: NORTH WINDS FROM 10 TO 15 MPH WILL ADD STRESS
TO TREE LIMBS AND POWER LINES ALREADY WEIGHTED DOWN WITH SNOW
AND ICE.

* PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND SIDEWALKS
AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING OR
SPENDING TIME OUTDOORS.

&&

$$

BURKE
January 29, 2010 - 1001 PM CST - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1001 PM CST FRI JAN 29 2010

OKZ031-032-300515-
/O.CAN.KOUN.WW.Y.0003.000000T0000Z-100130T0600Z/
SEMINOLE-HUGHES-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE
1001 PM CST FRI JAN 29 2010

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE WINTER
WEATHER ADVISORY.

SNOW SHOWERS HAD ENDED. FLURRIES REMAIN POSSIBLE...BUT WITH NO
SIGNIFICANT REDUCTION TO VISIBILITY...AND NO ACCUMULATION. WITH
TEMPERATURES WELL BELOW FREEZING...THE EXISTING ICE AND SNOW PACK
WILL STILL MAINTAIN HAZARDOUS CONDITIONS ON UNTREATED ROADS AND
SIDEWALKS.

$$

BURKE

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