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NWS Products

Products Issued Before and During the
December 24, 2009 Christmas Eve Blizzard

This is a collection of products issued by the National Weather Service office in Norman, Oklahoma before and during the Christmas Eve blizzard. 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.
  • 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.

Dec 22 - 1209 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1209 AM CST TUE DEC 22 2009

.AVIATION...
A STATIONARY FRONT WILL LINGER FROM CSM TO PNC THROUGH THE
PERIOD...WITH ONLY MINOR FLUCTUATIONS. LOW CLOUDS MOVING SOUTH
FROM NEBRASKA WILL BRING IFR CONDITIONS TO OUN...OKC...AND PNC
OVERNIGHT...WITH LITTLE IMPROVEMENT DURING THE DAY TOMORROW.
ANOTHER AREA OF LOW CLOUDS IN SOUTH CENTRAL TEXAS WILL MOVE NORTH
INTO WESTERN NORTH TEXAS DURING THE MORNING CREATING MVFR
CONDITIONS FOR SPS...LAW...HBR...AND CSM. THERE IS QUITE A BIT OF
UNCERTAINTY HOW FAR NORTH AND WEST THESE CLOUDS WILL MOVE...WITH
CSM AND HBR ON THE WESTERN EDGE.

&&

.PREV DISCUSSION... /ISSUED 1019 PM CST MON DEC 21 2009/

UPDATE...
SOME MINOR ADJUSTMENTS WERE MADE TO A FEW GRIDS TONIGHT TO BETTER
MATCH CURRENT CONDITIONS.

FOCUS REMAINS ON THE LATE-WEEK SYSTEM... AND 00Z MODELS APPEAR TO
BE THROWING ANOTHER CURVE. NAM... AND NOW GFS... HAVE TURNED THE
MAIN 500-MB LOW FARTHER N INTO CENTRAL PLAINS WED NIGHT AND
THURSDAY. WHILE BOTH STILL INDICATE A VIGOROUS SHORTWAVE TROF
SWINGING ACROSS THE AREA... THE NEW TREND WOULD HAVE US DEALING
WITH A DRY SLOT AND SHARPLY REDUCED PRECIP CHANCES. WE WILL NOT
BITE ON THIS YET.. BUT WILL NEED TO TWEAK THE SPS AND HWO TO PLACE
MORE EMPHASIS ON THE STILL-LIKELY COMBO OF WIND AND COLD THAT WILL
ARRIVE BY XMAS EVE... AND LESS ON THE SNOW AND BLOWING SNOW.

PREV DISCUSSION... /ISSUED 540 PM CST MON DEC 21 2009/

AVIATION...
00Z TAFS...WE HAVE HIGH CONFIDENCE IN VFR CONDITIONS THROUGH THE PERIOD
AT KGAG/KWWR/KCSM/KHBR. ELSEWHERE...LOW LEVEL MOISTURE RETURNING
NORTHWARD MAY BRING IFR CEILINGS OVER OTHER TERMINALS BEGINNING AROUND
09-10Z. MODEL LOW LVL RELATIVE HUMIDITY FORECASTS INDICATE THAT
THE EDGE OF THE IFR CEILINGS MAY BE NEAR KSPS/KLAW/KOKC/KOUN/KPNC.
WE LEFT THE IFR CONDS ALREADY EXISTING FROM PREVIOUS FORECASTS IN
THE TAFS SINCE LOW CIGS AT THESE TERMINALS ARE STILL VERY
POSSIBLE...THOUGH NOT DEFINITE.

TAYLOR

PREV DISCUSSION... /ISSUED 215 PM CST MON DEC 21 2009/

DISCUSSION...
PRIMARY FOCUS WAS ON UPCOMING STORM SYSTEM/WINTER WX. STRATUS AND
POSSIBLY SOME PATCHY FOG WILL DEVELOP LATER TONIGHT AS MOISTURE
SPREADS NORTHWARD INTO THE FA. GULF MOISTURE WILL CONT TO MOVE
NORTHWARD TUESDAY AHEAD OF THE APPROACHING STORM SYSTEM. AS MOISTURE
INCREASES RAIN/DRIZZLE WILL BECOME POSSIBLE IN EASTERN PORTIONS OF
FA TUESDAY. BOUNDARY WILL HANG OUT IN THE FA UNTIL FINALLY MOVING
SOUTH AS A COLD FRONT WEDNESDAY. AIRMASS AHEAD OF THE UPR STORM
SYSTEM... THAT WILL EVENTUALLY MOVE ACROSS THE SOUTHERN PLAINS...
WILL ALSO CONT TO WARM OVER THE NEXT COUPLE OF DAYS LEADING TO
PRECIP LIKELY BEGINNING AS RAIN. ARCTIC AIR WILL MOVE INTO THE
SOUTHERN PLAINS WED NIGHT/THURSDAY LEADING TO PRECIP CHANGING OVER
TO SNOW. WHEN THIS OCCURS WILL BE DEPENDENT ON HOW FAST THE COLD AIR
MOVES INTO THE REGION AND WILL ALSO AFFECT SNOWFALL AMOUNTS. RIGHT
NOW MOST LIKELY AREA TO RECEIVE A DECENT AMOUNT OF ACCUMULATION
/MAYBE SEVERAL INCHES/ WILL BE ACROSS NORTHERN OK PRIMARILY DUE TO
WRAP AROUND PRECIP. HOWEVER... MODELS HAVE BEGUN TO INDICATE ANOTHER
SWATH OF ACCUMULATING SNOW IN SW PORTIONS OF FA NEAR THE UPPER LOW.
BLOWING SNOW COULD ALSO LIKELY BECOME AN ISSUE AS SFC LOW DEEPENS
AND STRONG NORTH TO NW WINDS DEVELOP. WILL HANDLE THE WINTER WX IN
HWOOUN... SPSOUN... AND GRAPHICS FOR NOW. HOWEVER... LATER SHIFTS
MAY NEED TO ISSUE A WATCH FOR CERTAIN LOCATIONS. AFTER THE STORM
SYSTEM EXITS THE AREA... THE COLD AIR WILL CONT TO AFFECT THE REGION
THROUGH THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 41 59 43 57 / 0 20 30 60
HOBART OK 39 58 40 53 / 0 10 20 50
WICHITA FALLS TX 45 67 48 62 / 0 10 10 50
GAGE OK 24 49 33 44 / 0 10 20 60
PONCA CITY OK 36 53 43 53 / 0 20 50 60
DURANT OK 47 63 55 67 / 0 20 40 70

&&

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

$$

24/03/18
Dec 22 - 502 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
502 AM CST TUE DEC 22 2009

.DISCUSSION...A CYCLONE DEVELOPING WEDNESDAY THROUGH THURSDAY WILL
PRODUCE A VARIETY OF WEATHER. NUMEROUS MESOSCALE DETAILS WILL
DETERMINE PRECIPITATION TYPE AND TIMING. THE 00Z GFS REPRESENTS OUR
MODEL OF CHOICE FOR THESE DETAILS. TWO PRIMARY WAVE OF PRECIPITATION
ARE EXPECTED. THE FIRST WILL BE RAIN ON WEDNESDAY...AND THE SECOND
WILL TRANSITION FROM RAIN TO SNOW EARLY THURSDAY. THE LATTER WAVE IS
NOT EXPECTED TO BE INTENSE ENOUGH...OR PERSIST LONG ENOUGH TO
WARRANT A WINTER STORM WATCH AT THIS TIME.

GULF MOISTURE RETURNS QUICKLY TODAY...PUTTING A CAP ON
TEMPERATURES...AND INTRODUCING LOW STRATUS TO MOST OF THE REGION.
THE EXCEPTION WILL BE SOUTHWEST OKLAHOMA AND FAR WESTERN NORTH
TEXAS...SITUATED ALONG A TROUGH AXIS EXTENDING SOUTHWARD FROM A
SURFACE LOW. WE REDUCED THE COVERAGE OF LOW POPS IN THE DAYTIME
FORECAST...AS TEMPERATURES ARE WARM ENOUGH AND LOW LEVEL WINDS LIGHT
ENOUGH TO PREVENT ANY SIGNIFICANT DRIZZLE. WE KEPT LOW POPS IN
SOUTHEAST OKLAHOMA...WHERE SEVERAL MODELS SHOW THE WARM MOIST GULF
AIR BECOMING SO PRONOUNCED THAT THERE WILL BE SOME INSTABILITY IN
THE UPPER PART OF THE BOUNDARY LAYER. THIS COULD SUPPORT LIGHT RAIN
SHOWERS.

TONIGHT THE MODELS GIVE US HIGH POPS...BUT ONLY A FEW HUNDREDTHS OF
AN INCH OF RAIN. ALTHOUGH MOISTURE WILL BE IN PLACE...IT IS
DIFFICULT TO FIND MUCH OF A FORCING MECHANISM TO SUPPORT SUCH
WIDESPREAD HIGH POPS. THE MOST LIKELY MECHANISM WILL BE THE LOW
LEVEL JET PRODUCING DRIZZLE ALONG AND EAST OF INTERSTATE 35. LOW
LEVEL FRONTOGENESIS MAY ALSO PRODUCE LIGHT RAIN NEAR THE KANSAS
BORDER BACK INTO NORTHWEST OKLAHOMA. WE UNDERCUT POPS FROM CENTRAL
INTO SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS. A FEW
THUNDERSTORMS MAY BREAK OUT IN SOUTHEAST OKLAHOMA...WHERE MOISTURE
WILL CONTINUE TO DEEPEN. IT IS MORE LIKELY...HOWEVER...THAN THUNDER
WILL OCCUR DURING THE DAY WEDNESDAY...AS THE FIRST PRONOUNCED SHORT
WAVE TROUGH EJECTS FROM THE DEVELOPING UPPER LEVEL CYCLONE. THIS
WAVE WILL STRENGTHEN THE DRY SLOT OVER OKLAHOMA WHEN IT MOVES UP
INTO KANSAS WEDNESDAY AFTERNOON. AT THE SAME TIME...COLD AIR WILL
BEGIN TO ARRIVE INTO NORTHWEST OKLAHOMA...AND WE INTRODUCED A PERIOD
OF FREEZING DRIZZLE THAT COULD AFFECT WESTERN OKLAHOMA OVERNIGHT
INTO THURSDAY MORNING.

THE SECOND...AND PRIMARY SHORT WAVE TROUGH...EJECTS FROM WEST TEXAS
UP TOWARD EASTERN OKLAHOMA WEDNESDAY NIGHT. THIS WILL LEAD TO
ADDITIONAL RAIN AND THUNDERSTORMS...ESPECIALLY ALONG AND EAST OF
INTERSTATE 44. GIVEN THE DYNAMIC LIFTING AND ARRIVAL OF COLD LOW
LEVEL AIR...WE SHOULD SEE A CHANGE TO SNOW WHEN THE SYSTEM MATURES
THURSDAY MORNING OVER CENTRAL AND NORTHERN OKLAHOMA. WE FORECAST THE
CHANGEOVER A LITTLE AHEAD OF THE GFS THERMODYNAMIC PROFILE...
ASSUMING THE MODELS USUALLY DO NOT CAPTURE THE EFFECTS OF
EVAPORATIVE COOLING AND STRONG RIDGING ALONG THE HIGH PLAINS THAT
WILL SUPPORT MORE RAPID COOLING. EVEN WITH AN EARLY
CHANGEOVER...THOUGH...THE PRECIPITATION IS NOT LIKELY TO PERSIST IN
ANY SIGNIFICANT WAY BEFORE COLD ADVECTION AND SUBSIDENCE BEGINS TO
DOMINATE IN THE WAKE OF THE UPPER LEVEL WAVE. ALTHOUGH SNOW WRAPPING
AROUND THE MATURE LOW WILL REDUCE VISIBILITY AND MAY ACCUMULATE IN
NORTH CENTRAL OR CENTRAL OKLAHOMA...THE CURRENT FORECAST IS FOR AN
ADVISORY LEVEL EVENT.

THE LONG DURATION COLD THAT WILL FOLLOW THE STORM...FROM THURSDAY
THROUGH THE WEEKEND...COULD BE THE BIGGER STORY. AND FINALLY...THERE
IS A SECOND STORM BEGINNING TO TAKE SHAPE...AS EARLY NEXT WEEK THE
MODELS FORECAST THE NEXT SOUTHERN STREAM TROUGH TO PROGRESS THROUGH
SPLIT FLOW TO OUR WEST. IF THE TROUGH ARRIVES EARLY ENOUGH...COLD
AIR WILL ALREADY BE IN PLACE...AND THAT SYSTEM COULD BE MORE
FAVORABLE FOR SNOW THAN THE CURRENT SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 55 49 59 34 / 0 40 50 70
HOBART OK 57 45 54 30 / 0 10 20 50
WICHITA FALLS TX 66 51 62 37 / 0 20 30 60
GAGE OK 56 34 41 26 / 10 30 60 60
PONCA CITY OK 53 46 58 32 / 10 40 70 60
DURANT OK 58 56 64 45 / 20 70 80 90

&&

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

$$

02/22
Dec 22 - 624 AM - Special Weather Statement Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
624 AM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-222100-
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
624 AM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND
SOME SNOW...

HAZARDOUS WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS
BEGINNING WEDNESDAY NIGHT...AS A STORM SYSTEM INTENSIFIES AND TRACKS
FROM THE SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG
NORTHERLY WINDS AND MUCH COLDER AIR WILL RESULT IN A COLD AND
BLUSTERY CHRISTMAS EVE WITH WIND CHILL TEMPERATURES IN THE TEENS AND
20S. ALTHOUGH WIND SPEEDS WILL DECREASE ON CHRISTMAS DAY...IT WILL
STILL BE A COLD...WITH HIGHS ONLY IN THE 30S.

THE STORM WILL BEGIN TO TAKE SHAPE TONIGHT...WHEN COLDER AIR GATHERS
OVER NORTHWESTERN OKLAHOMA. ON WEDNESDAY...A COLD FRONT WILL WILL
SPREAD TOWARD THE SOUTHEAST...SLOWLY AT FIRST...BUT MORE RAPIDLY BY
EVENING. FREEZING TEMPERATURES WILL REACH CENTRAL AND SOUTHWEST
OKLAHOMA...AND WESTERN NORTH TEXAS...BY THURSDAY MORNING.

FREEZING DRIZZLE MAY DEVELOP OVER PARTS OF WESTERN OKLAHOMA
WEDNESDAY NIGHT AND EARLY THURSDAY...AND ROADS COULD BECOME SLICK
AND HAZARDOUS. AN UPPER LOW ARRIVING ON THURSDAY WILL CAUSE RAIN AND
DRIZZLE TO CHANGE TO MIX WITH OR CHANGE TO SNOW OVER NORTHERN AND
MUCH OF CENTRAL OKLAHOMA.

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3
INCHES OF SNOW MAY ACCUMULATE IN NORTHERN OKLAHOMA...ESPECIALLY
AROUND ENID AND PONCA CITY EARLY THURSDAY. SOME LIGHT SNOW
ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS OKLAHOMA CITY...
CLINTON...AND WOODWARD. INCREASINGLY BLUSTERY WINDS WILL RESULT IN
BLOWING SNOW AND REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR
DAYS.

$$
Dec 22 - 1145 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231100-
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-
1145 AM CST TUE DEC 22 2009

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

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST OKLAHOMA...MAINLY OVERNIGHT.
SEVERE THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
SURFACE LOW PRESSURE WILL INTENSIFY IN WEST TEXAS AND SOUTH WINDS
WILL PULL GULF MOISTURE NORTHWARD INTO SOUTHERN AND EASTERN OKLAHOMA
THROUGH TONIGHT. A STRENGTHENING LOW LEVEL JET MAY AID IN THE
DEVELOPMENT OF A FEW THUNDERSTORMS IN SOUTHEAST OKLAHOMA WHERE LOW
LEVEL MOISTURE WILL BE THE DEEPEST. HOWEVER...INSTABILITY WILL
REMAIN LIMITED AND SEVERE THUNDERSTORMS ARE NOT EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY DEC 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...50 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

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

THUNDERSTORM OUTLOOK...
STRONG THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF CENTRAL AND
SOUTHEAST OKLAHOMA WEDNESDAY. MOISTURE AND INSTABILITY WILL CONTINUE
TO INCREASE AS SOUTHERLY WINDS PREVAIL TO THE EAST OF A COLD FRONT
ACROSS NORTHWEST OKLAHOMA. WIND SHEAR WILL ALSO INCREASE AS THE
UPPER LEVEL STORM SYSTEM NEARS THE AREA. THE INCREASING INSTABILITY
AND SHEAR WILL BE FAVORABLE FOR A FEW SEVERE THUNDERSTORMS OVER
PARTS OF SOUTHEAST OKLAHOMA. THE MAIN THREAT WILL BE LARGE HAIL.

OTHER HAZARDOUS WEATHER...
A WINTER STORM WILL AFFECT THE SOUTHERN PLAINS FROM LATE TUESDAY
THROUGH AT LEAST THURSDAY. RAIN COULD CHANGE TO SNOW WEDNESDAY NIGHT
INTO THURSDAY... RESULTING IN HAZARDOUS TRAVEL CONDITIONS. SOME SNOW
ACCUMULATIONS WILL BE POSSIBLE...MAINLY OVER NORTHERN OKLAHOMA.
HOWEVER...ALL AREAS WILL BE IMPACTED BY THE COMBINATION OF COLD
TEMPERATURES AND STRONG NORTHERLY WINDS... WHICH WILL RESULT IN LOW
WIND CHILL VALUES. IN AREAS THAT DO SEE SNOW ACCUMULATIONS...THE
STRONG WINDS WILL LIKELY RESULT IN AREAS OF BLOWING SNOW AND LOWER
VISIBILITY.

AS THE STORM EXITS... A LARGE MASS OF ARCTIC AIR WILL OVERSPREAD THE
SOUTHERN PLAINS. THE COLD AIRMASS COMBINED WITH STRONG WINDS WILL
RESULT IN DANGEROUSLY LOW WIND CHILL TEMPERATURES BOTH THURSDAY AND
FRIDAY.

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

$$

30
Dec 22 - 402 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
402 PM CST TUE DEC 22 2009

.DISCUSSION...
SURFACE FRONTAL BOUNDARY CURRENTLY EXTENDS FROM NORTH CENTRAL INTO
SOUTHWEST OKLAHOMA. ALTHOUGH AIR ON THE COOL SIDE OF THIS BOUNDARY
IS NOT TOO COLD YET... THE COLDER AIR IN THE NORTHERN PLAINS WILL
MOVE SOUTH TOWARD THIS BOUNDARY OVER THE COURSE TONIGHT AND EARLY
WEDNESDAY. UPSTAIRS... THE UPPER LOW MOVING INTO ARIZONA WILL
MOVE EAST TONIGHT WITH STRONGER LIFT THAN EARLIER ANTICIPATED
DEVELOPING ACROSS THE AREA AHEAD OF THIS WAVE. WITH THE MOIST LOW-
LEVEL ATMOSPHERE AND THE BOUNDARY ACROSS A PORTION OF THE AREA...
IT IS LOOKING LIKE HIGHER CHANCES OF MEASURABLE RAIN AS OPPOSED TO
JUST DRIZZLE AND HAVE THEREFORE INCREASED THE POPS.

THE 12Z MODELS ARE ON THE SAME PAGE WITH THE EVOLUTION OF THIS
SYSTEM ALTHOUGH IT IS SLIGHTLY DIFFERENT THAN PREVIOUS RUNS. AFTER
THE FIRST WAVE MOVES BY THE AREA... SURFACE CYCLOGENESIS DEVELOPS
ALONG THE BOUNDARY WITH THIS SURFACE LOW MOVING NORTHEAST
TOMORROW AFTERNOON ALLOWING COLDER AIR TO BEGIN SPREADING ACROSS
MUCH OF THE AREA. MEANWHILE THE UPPER TROF CURRENTLY DIVING SOUTH
FROM OREGON SWINGS EAST FROM THE SOUTHWEST UNITED STATES AND
PASSES OVER THE AREA THURSDAY. WHILE THE BEST MOISTURE SHIFTS EAST
AS THE FIRST WAVE MOVES EAST... LINGERING MOISTURE MAY BE
SUFFICIENT FOR PRECIPITATION TO PERSIST. ENOUGH COOL AIR FILTERS
INTO THE AREA TO SUPPORT THE CHANGE TO SNOW IN NORTHWEST OKLAHOMA
LATE WEDNESDAY AFTERNOON ACCORDING TO THE BUFR SOUNDINGS... WITH
THE COOL AIR SPREADING ACROSS THE AREA AND SUPPORTING A CHANGEOVER
TO SNOW FARTHER SOUTHEAST THURSDAY AS PRECIPITATION IS WANING.
THE OVERLAP BETWEEN THE SUFFICIENTLY COLD LOW-LEVEL AIR AND
PRECIPITATION MAY ALLOW SOME LIGHT ACCUMULATIONS /AN INCH OR SO/
ACROSS NORTHERN OKLAHOMA BUT STILL DO NOT EXPECT SIGNIFICANT
SNOWFALL. MORE LIKELY TO BE NOTICED WILL BE THE STRONG NORTH WINDS
/25 TO 35 MPH IN SOME AREAS/ ON CHRISTMAS EVE IN RESPONSE TO THE
DEEPENING LOW PRESSURE TO THE EAST AS THIS SECOND WAVE MOVES
THROUGH THE PLAINS. THE WIND IN CONJUNCTION WITH THE COLDER LOW-
LEVEL AIR WILL MAKE IT FEEL QUITE COLD. PRECIP MAY LINGER NORTH ON
THURSDAY NIGHT AND FRIDAY AS ANOTHER SHORTWAVE MOVES SOUTH THROUGH
THE PLAINS ON THE BACK SIDE OF THE SECOND LOW... BUT MOISTURE WILL
BE LIMITED.

IN THE EXTENDED... NO SIGNIFICANT UPDATES EXCEPT TO LOWER MAX
TEMPERATURES ON SUNDAY AND MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 48 59 32 38 / 30 70 50 30
HOBART OK 44 55 29 37 / 20 40 40 10
WICHITA FALLS TX 50 65 34 39 / 20 40 50 20
GAGE OK 34 39 21 30 / 40 60 50 20
PONCA CITY OK 43 50 30 36 / 70 90 60 50
DURANT OK 56 68 40 42 / 60 60 70 30

&&

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

$$
Dec 22 - 435 PM - Special Weather Statement Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
435 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-230600-
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
435 PM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND
SOME SNOW...

WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS BEGINNING
WEDNESDAY EVENING AS A STORM SYSTEM INTENSIFIES AND TRACKS FROM THE
SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG NORTHERLY WINDS
AND MUCH COLDER AIR WILL RESULT IN A COLD AND BLUSTERY CHRISTMAS EVE
WITH WIND CHILL TEMPERATURES IN THE SINGLE DIGITS TO 20S. ALTHOUGH
WIND SPEEDS WILL DECREASE LATE ON CHRISTMAS DAY...IT WILL STILL BE A
COLD...WITH HIGHS ONLY IN THE UPPER 20S AND 30S.

THE STORM WILL BEGIN TO TAKE SHAPE TONIGHT AS COLDER AIR BEGINS TO
MOVE INTO NORTHWESTERN OKLAHOMA. ON WEDNESDAY...A COLD FRONT WILL
SPREAD TOWARD THE SOUTHEAST...SLOWLY AT FIRST...BUT MORE RAPIDLY BY
EVENING. FREEZING TEMPERATURES WILL REACH CENTRAL AND SOUTHWEST
OKLAHOMA...AND WESTERN NORTH TEXAS...BY THURSDAY MORNING.

AS COLD AIR CONTINUES TO SPREAD INTO THE AREA... RAIN MAY MIX WITH
OR CHANGE TO SNOW OVER NORTHWESTERN OKLAHOMA LATE WEDNESDAY
AFTERNOON... AND MUCH OF WESTERN OKLAHOMA AND PORTIONS OF WESTERN
NORTH TEXAS BEFORE SUNRISE ON THURSDAY. RAIN MAY THEN MIX WITH OR
CHANGE TO SNOW BEFORE PRECIPITATION ENDS ACROSS THE REMAINDER OF THE
AREA DURING THE DAY ON THURSDAY.

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3
INCHES OF SNOW MAY ACCUMULATE IN NORTHERN OKLAHOMA...ESPECIALLY
AROUND WOODWARD TO ENID AND PONCA CITY EARLY THURSDAY. SOME LIGHT
SNOW ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS OKLAHOMA CITY
AND CLINTON. INCREASINGLY BLUSTERY WINDS WILL RESULT IN BLOWING SNOW
AND REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR
DAYS.

$$

SC/DS
Dec 22 - 550 PM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
550 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231100-
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-
550 PM CST TUE DEC 22 2009

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

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE POSSIBLE MAINLY LATE TONIGHT IN CENTRAL AND
SOUTHERN OKLAHOMA... AND PARTS OF WESTERN NORTH TEXAS. SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
SURFACE LOW PRESSURE WILL INTENSIFY IN WEST TEXAS AND SOUTH WINDS
WILL CONTINUE TO PULL GULF MOISTURE NORTHWARD INTO OKLAHOMA AND
WESTERN NORTH TEXAS THROUGH TONIGHT. A STRENGTHENING LOW LEVEL JET
MAY AID IN THE DEVELOPMENT OF A FEW THUNDERSTORMS IN CENTRAL AND
SOUTHERN OKLAHOMA... AND PARTS OF WESTERN NORTH TEXAS. HOWEVER...
THE INSTABILITY WILL REMAIN LIMITED AND SEVERE THUNDERSTORMS ARE NOT
EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY DEC 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...50 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

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

THUNDERSTORM OUTLOOK...
STRONG THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF CENTRAL AND
SOUTHEAST OKLAHOMA WEDNESDAY. MOISTURE AND INSTABILITY WILL CONTINUE
TO INCREASE AS SOUTHERLY WINDS PREVAIL TO THE EAST OF A COLD FRONT
ACROSS NORTHWEST OKLAHOMA. WIND SHEAR WILL ALSO INCREASE AS THE
UPPER LEVEL STORM SYSTEM NEARS THE AREA. THE INCREASING INSTABILITY
AND SHEAR WILL BE FAVORABLE FOR A FEW SEVERE THUNDERSTORMS OVER
PARTS OF SOUTHEAST OKLAHOMA. THE MAIN THREAT WILL BE LARGE HAIL.

OTHER HAZARDOUS WEATHER...
A WINTER STORM WILL AFFECT THE SOUTHERN PLAINS FROM LATE TUESDAY
THROUGH AT LEAST THURSDAY. RAIN COULD CHANGE TO SNOW WEDNESDAY NIGHT
INTO THURSDAY. SOME SNOW ACCUMULATIONS WILL BE POSSIBLE... MAINLY
OVER NORTHERN OKLAHOMA. HOWEVER...ALL AREAS WILL BE IMPACTED BY THE
COMBINATION OF COLD TEMPERATURES AND STRONG NORTHERLY WINDS... WHICH
WILL RESULT IN LOW WIND CHILL VALUES. IN AREAS THAT DO SEE SNOW
ACCUMULATIONS... THE STRONG WINDS WILL LIKELY RESULT IN AREAS OF
BLOWING SNOW AND LOWER VISIBILITY.

AS THE STORM EXITS... A LARGE MASS OF ARCTIC AIR WILL OVERSPREAD THE
SOUTHERN PLAINS. THE COLD AIRMASS COMBINED WITH STRONG WINDS WILL
RESULT IN DANGEROUSLY LOW WIND CHILL TEMPERATURES BOTH THURSDAY AND
FRIDAY.

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

$$

30/CJS
Dec 22 - 931 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
931 PM CST TUE DEC 22 2009

.UPDATE...
LEAD SHORT WAVE IS CURRENTLY MOVING THROUGH WEST TEXAS THIS
EVENING WITH SCATTERED LIGHT PRECIPITATION... PROBABLY MOSTLY
VIRGA... CURRENTLY DEVELOPING OVER OKLAHOMA AND PARTS OF NORTH
TEXAS. AS THE DRY SLOT WORKS ASSOCIATED WITH THE WAVE MOVES NORTHEAST...
THE CHANCE FOR MEASURABLE PCPN IN THE SOUTHWEST PART OF THE CWA
WILL BE FALLING OFF. MEANWHILE... HAVE INCLUDED THE CHANCE FOR
FREEZING DRIZZLE IN THE FAR NORTHWEST OKLAHOMA FOR THE
OVERNIGHT HOURS. TEMPERATURES HAVE LIKELY SLIPPED JUST BELOW
FREEZING IN FAR WESTERN HARPER COUNTY... AND COULD SEE SUB-
FREEZING TEMPS SLIP A LITTLE FARTHER EAST AND SOUTH BY MORNING. AT
THIS POINT... IT LOOKS LIKE PCPN WILL REMAIN VERY LIGHT... BUT
WILL KEEP TABS ON IT AS THE NIGHT PROGRESSES.

QUICK LOOK AT NEW MODEL RUNS TAKE THE 500 MB LOW FARTHER TO THE
SOUTH AGAIN WHICH COULD INCREASE THE CHANCE FOR ACCUMULATING SNOW FARTHER
SOUTH IN OUR AREA. HOWEVER... AMOUNTS ARE MORE PROBLEMATIC AS THIS
EVENING'S SHORT WAVE IS FORECAST TO BRING A DRY SLOT INTO THE AREA
LATE TONIGHT AND WEDNESDAY. THE DRY SLOT THEN EVOLVES INTO A
'DONUT HOLE' OF LOWER RH'S ACROSS MUCH OF THE AREA AS MOISTURE
BEGINS TO WRAP AROUND THE PERIPHERY OF THE MID LEVEL LOW WEDNESDAY
NIGHT. THIS COULD REDUCE PRECIPITATION AMOUNTS BEFORE WE POSSIBLY
SEE A NARROW WINDOW OF SOMEWHAT HEAVIER SNOW ACROSS CENTRAL
OKLAHOMA THURSDAY MORNING AS THE BAND OF MOISTURE ON THE WESTERN
SIDE OF THE LOW MOVES EAST. WILL SEE HOW THE OTHER MODELS
SOLUTIONS EVOLVE BEFORE ADJUSTING THINGS TOO MUCH.
Dec 22 - 1036 PM - Special Weather Statement Jump To Top 
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1036 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231200-
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
1036 PM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND
SOME SNOW...

WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS BEGINNING
WEDNESDAY EVENING AS A STORM SYSTEM INTENSIFIES AND TRACKS FROM THE
SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG NORTHERLY WINDS
AND MUCH COLDER AIR WILL RESULT IN A COLD AND BLUSTERY CHRISTMAS EVE
WITH WIND CHILL TEMPERATURES IN THE SINGLE DIGITS TO 20S. ALTHOUGH
WIND SPEEDS WILL DECREASE LATE ON CHRISTMAS DAY...IT WILL STILL BE
COLD...WITH HIGHS ONLY IN THE UPPER 20S AND 30S.

THE STORM WILL BEGIN TO TAKE SHAPE DURING THE EARLY MORNING HOURS ON
WEDNESDAY AS COLDER AIR BEGINS TO MOVE INTO NORTHWESTERN OKLAHOMA.
ON WEDNESDAY...A COLD FRONT WILL SPREAD TOWARD THE SOUTHEAST...
SLOWLY AT FIRST...BUT MORE RAPIDLY BY EVENING. FREEZING TEMPERATURES
WILL REACH CENTRAL AND SOUTHWEST OKLAHOMA...AND WESTERN NORTH
TEXAS...BY THURSDAY MORNING.

AS COLD AIR CONTINUES TO SPREAD INTO THE AREA... RAIN MAY MIX WITH
OR CHANGE TO SNOW OVER NORTHWESTERN OKLAHOMA LATE WEDNESDAY
AFTERNOON... AND MUCH OF WESTERN OKLAHOMA AND PORTIONS OF WESTERN
NORTH TEXAS BEFORE SUNRISE ON THURSDAY. RAIN MAY THEN MIX WITH OR
CHANGE TO SNOW BEFORE PRECIPITATION ENDS ACROSS THE REMAINDER OF THE
AREA DURING THE DAY ON THURSDAY.

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3
INCHES OF SNOW MAY ACCUMULATE IN PORTIONS OF NORTHERN AND CENTRAL
OKLAHOMA...ESPECIALLY AROUND ENID...PONCA CITY...AND STILLWATER
EARLY THURSDAY. SNOW ACCUMULATIONS IN EXCESS OF TWO INCHES MAY
EXTEND SOUTH INTO THE OKLAHOMA CITY METRO AREA. SOME LIGHT SNOW
ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS ARDMORE AND HOBART.
INCREASINGLY BLUSTERY WINDS WILL RESULT IN BLOWING AND DRIFTING
SNOW... AS WELL AS REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR
DAYS.

$$

SC/DS/AT
Dec 22 - 1048 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1048 PM CST TUE DEC 22 2009

.UPDATE...
UPDATING GRIDS TO EXPAND SNOW ACCUMULATIONS FARTHER SOUTH INTO
CENTRAL OKLAHOMA AND DOWN TOWARDS THE ARBUCKLES FOR CHRISTMAS EVE.
LATEST GFS COMING IN RELATIVELY CLOSE TO THE MORE SOUTHWARD TRACK
OF THE UPPER LOW AS WAS ALSO DEPICTED BY THE LATEST NAM. STILL
SOME QUESTION REMAINS ON AMOUNTS AS DRY SLOT WITH LEAD SHORT WAVE WILL
TEMPORARILY MOVE OUT MOISTURE. MOST OF THE SNOW WILL LIKELY OCCUR
ON THE BACK SIDE OF THE UPPER LOW WHICH WILL BE PROGRESSIVE. AT
THIS TIME... IT APPEARS THAT THE MOST LIKELY WINDOW FOR
SIGNIFICANT ACCUMULATIONS WILL BE FROM VERY LATE WEDNESDAY NIGHT
THROUGH ABOUT MIDDAY THURSDAY. STRONG NORTH WINDS COULD ALSO LEAD
TO CONSIDERABLE BLOWING AND DRIFTING.
Dec 23 - 421 AM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
421 AM CST WED DEC 23 2009

OKZ004>006-009>011-014>016-021-231830-
/O.NEW.KOUN.WW.Y.0008.091224T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
CUSTER-BECKHAM-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA...WEATHERFORD...CLINTON...
ELK CITY...SAYRE
421 AM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING DRIZZLE...SNOW...AND BLOWING SNOW...
WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: FREEZING DRIZZLE CHANGING TO LIGHT SNOW...WITH
ACCUMULATION AROUND ONE INCH

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES


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.

&&

$$

OKZ017-022-023-033>038-231830-
/O.NEW.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
BLAINE-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-
INCLUDING THE CITIES OF...WATONGA...CORDELL...ANADARKO...HOLLIS...
MANGUM...HOBART...ALTUS...FREDERICK...LAWTON
421 AM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING DRIZZLE...SNOW...AND BLOWING SNOW...
WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY.

* TIMING: LATE TONIGHT THROUGH THURSDAY

* MAIN IMPACT:

* MAIN IMPACT: FREEZING DRIZZLE CHANGING TO LIGHT SNOW...WITH
ACCUMULATION UP TO ONE INCH

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES

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.

&&

$$

OKZ007-008-012-013-018>020-024>030-231830-
/O.NEW.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
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
421 AM CST WED DEC 23 2009

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

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

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: SNOW...WITH ACCUMULATION OF 2 TO 5 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES.

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.

&&

$$

BURKE/02
Dec 23 - 454 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
454 AM CST WED DEC 23 2009

.DISCUSSION...ALTHOUGH THE TRACK OF OUR UPPER LEVEL STORM HAS NOT
WAVERED TOO MUCH...THERE ARE SOME SUBTLE CHANGES SHOWING UP IN THE
OBSERVATIONS AND RECENT MODEL TRENDS. THESE SUBTLE CHANGES COMBINED
TO YIELD A MORE SIGNIFICANT SHIFT IN OUR THINKING...AND LED US TO
ISSUE A WINTER STORM WATCH FOR CENTRAL AND NORTH CENTRAL OKLAHOMA.

THIS MORNING...A QUASISTATIONARY SURFACE BOUNDARY HAD SLIPPED TO
NEAR INTERSTATE 44...ABOUT 6 TO 12 HOURS AHEAD OF SCHEDULE. THE
FRONT WILL NOT COME CHARGING THROUGH TODAY...AS IT WILL WAIT FOR
UPSTREAM HEIGHT FALLS ASSOCIATED WITH THE APPROACHING UPPER LEVEL
LOW. BUT COLD AIR HAS OVERSPREAD PART OF OUR FORECAST AREA THIS
MORNING...AND THE FRONT WILL CONTINUE TO STRENGTHEN...AIDED BY
DIFFERENTIAL HEATING...ADVECTIONS...AND FRONTOGENESIS. AS A
RESULT...WE EXPECT SUB FREEZING TEMPERATURES TO OVERTAKE THE REGION
A LITTLE BIT FASTER WHEN THE FRONT MOVES EAST WITH THE UPPER LOW
LATER TONIGHT. ADDITIONALLY...THE MODEL SOLUTIONS HAVE TRENDED
TOWARD PRODUCING GREATER MID AND UPPER LEVEL ASCENT FROM TONIGHT
INTO MUCH OF THE DAY THURSDAY...WHILE THE LOW TAKES A TRACK
THROUGH NORTH CENTRAL TEXAS AND SOUTHEAST OKLAHOMA...WHICH IS
CLIMATOLOGICALLY FAVORABLE FOR SNOWFALL IN AREAS NORTH OF THE
TRACK. WHILE WE SHOULD NOT PLACE TOO MUCH WEIGHT ON THE SNOW
ACCUMULATION ALGORITHMS FROM ANY PARTICULAR MODEL RUN...THERE HAVE
BEEN A NUMBER OF RUNS OF THE NAM AND GFS OVER THE PAST DAY...THAT
HAVE PRODUCED ACCUMULATING SNOWFALL IN THE AREA OF CONCERN.

THE STORM SYSTEM WILL BE PROGRESSIVE...AND SUBSTANTIAL SNOW MAY LAST
FOR ONLY 4 TO 5 HOURS AT ANY GIVEN LOCATION...BUT WE ARE CONCERNED
ABOUT THE POTENTIAL FOR SOME HEAVY SNOWFALL RATES. THE 00Z NAM
SOUNDINGS...IN PARTICULAR...SHOW STRONG LIFT THROUGH THE DENDRITIC
CRYSTAL ZONE ATOP A DEEP LAYER OF SATURATED AIR THAT IS JUST BELOW
FREEZING. SO WHILE THE GROUND WILL INITIALLY BE WARM...THE INTENSITY
OF THE SNOW COULD COMPENSATE...TO RESULT IN ACCUMULATION. ALSO
DURING THIS TIME...WINDS WILL BECOME BLUSTERY. AN ARCTIC COLD FRONT
EXITING MONTANA EARLY WEDNESDAY MORNING...WILL REACH NORTHWEST
OKLAHOMA BY SUNRISE THURSDAY...AND BLAST THROUGH THE REST OF
OKLAHOMA AND WESTERN NORTH TEXAS BY AFTERNOON.

IT IS IMPORTANT TO POINT OUT THAT THERE IS STILL AN UNUSUAL AMOUNT
OF CHANGE FROM ONE MODEL RUN TO THE NEXT...BUT THAT THE OVERALL
TREND SUGGESTS THERE IS THE THREAT OF WINTER STORM CONDITIONS.
WE HAVE ALSO POSTED WINTER WEATHER ADVISORIES TO THE WEST FOR
LIGHTER SNOW AMOUNTS...BUT COLDER WIND CHILL TEMPERATURES...AND
SOME FREEZING DRIZZLE.

NOT TO BE OUTDONE...IS THE SEVERE THUNDERSTORM POTENTIAL. THE SPC
SLIGHT RISK AREA LOOKS WELL WARRANTED FOR SOUTHERN AND EASTERN
OKLAHOMA. WITH A LEAD TROUGH EJECTING THIS MORNING...MOISTURE MAY
THIN ENOUGH TO ALLOW SOME HEATING ALONG AND NEAR THE INTERSTATE 35
CORRIDOR. STRONG FORCING WILL BEGIN TO ARRIVE FROM THE WEST THIS
AFTERNOON...AND THERE MAY BE A PERIOD IN WHICH WE SEE NEAR SURFACE
BASED STORMS...WITH PLENTY OF SHEAR...AND SUFFICIENT INSTABILITY.

ONCE THE SYSTEM EXITS THURSDAY NIGHT...ARCTIC COLD WILL SETTLE IN
FOR SEVERAL DAYS. THE NEXT UPPER LEVEL DISTURBANCE WILL APPROACH
EARLY NEXT WEEK...AND A CURSORY LOOK AT THE MODELS WOULD STILL
SUPPORT A CHANCE OF RAIN OR SNOW. WE LET THE GFS HANDLE MOST OF THE
EXTENDED FORECAST GRIDS...BUT DID PREFER THE FASTER TIMING OF THE
ECMWF WITH THIS LOWER AMPLITUDE WAVE ARRIVING EARLIER NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 52 31 32 18 / 50 90 90 10
HOBART OK 48 29 36 21 / 30 70 50 0
WICHITA FALLS TX 65 34 41 25 / 30 90 40 0
GAGE OK 35 21 32 12 / 70 60 30 0
PONCA CITY OK 47 30 31 12 / 70 70 90 40
DURANT OK 66 40 43 23 / 70 90 70 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON
FOR OKZ007-008-012-013-018>020-024>030.

WINTER WEATHER ADVISORY FROM 6 PM THIS EVENING TO 6 PM CST
THURSDAY FOR OKZ004>006-009>011-014>016-021.

WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST
THURSDAY FOR OKZ017-022-023-033>038.

TX...NONE.
&&

$$

02/22
Dec 23 - 500 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-231800-
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 DEC 23 2009

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

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

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF CENTRAL
AND SOUTHEAST OKLAHOMA THIS AFTERNOON AND EVENING. THE SLIGHT RISK
IS GENERALLY EAST OF AN ARDMORE TO CHANDLER LINE. LARGE HAIL AND
DAMAGIN WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED
TORNADO CAN NOT BE RULED OUT.

DISCUSSION...
AN UNSEASONABLY MILD AND INCREASINGLY MOIST AIRMASS WILL REMAIN IN
PLACE AHEAD OF A NEARLY STATIONARY FRONT FROM NORTH CENTRAL OKLAHOMA
INTO WESTERN NORTH TEXAS TODAY. SCATTERED THUNDERSTORMS WILL
POSSIBLE OVER PARTS OF SOUTHEAST OKLAHOMA THIS MORNING AS AN UPPER
LEVEL DISTURBANCE MOVES NORTHEASTWARD ACROSS OKLAHOMA AND NORTH
TEXAS. SOME SMALL HAIL WILL BE POSSIBLE FROM THE STRONGER STORMS BUT
ORGANIZED SEVERE STORMS ARE NOT EXPECTED. THE THUNDERSTORMS ARE
EXPECTED TO SHIFT EAST OF THE AREA LATER THIS MORNING. ADDITIONAL
SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP NEAR THE FRONT AS IT
BEGINS TO ACCELERATE SOUTHEASTWARD THIS AFTERNOON. WEAK TO MODERATE
INSTABILITY COMBINED WITH STRENGTENING WIND SHEAR PROFILES WILL BE
FAVORABLE FOR THE DEVELOPMENT OF SEVERE STORMS...INCLUDING
SUPECELLS. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN
THREATS...ALTHOUGH AN ISOLATED TORNADO CAN NOT BE RULED OUT IN SOUTH
CENTRAL AND SOUTHEAST OKLAHOMA. THE THREAT FOR SEVERE STORMS WILL
CONTINUE INTO THE EVENING HOURS UNTIL THE FRONT CLEARS THE AREA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...40 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER WEATHER IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE INTO
THURSDAY AS THE STRONG UPPER LEVEL STORM SYSTEM MOVES FROM WEST
TEXAS INTO MISSOURI. A WINTER STORM WATCH IS IN EFFECT FOR PARTS OF
NORTH CENTRAL AND CENTRAL OKLAHOMA AND A WINTER WEATHER ADVISORY IS
IN EFFECT FOR MUCH OF WESTERN OKLAHOMA TONIGHT AND THURSDAY.

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

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.

OTHER HAZARDOUS WEATHER...
COLD TEMPERATURES...STRONG WINDS AND LOW WIND CHILL READINGS WILL
PREVAIL AREAWIDE ON THURSDAY. ACCUMULATING SNOW WILL BE
POSSIBLE...MAINLY OVER PARTS OF CENTRAL AND NORTH CENTRAL OKLAHOMA.
COLD TEMPERATURES WILL CONTINUE INTO THE EARLY PART OF NEXT WEEK.

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

$$

02/22
Dec 23 - 1145 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-241100-
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-
1145 AM CST WED DEC 23 2009

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

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF CENTRAL
AND SOUTHEAST OKLAHOMA THIS AFTERNOON AND EVENING. THE SLIGHT RISK
IS GENERALLY EAST OF AN ARDMORE TO CHANDLER LINE. LARGE HAIL AND
DAMAGING WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED
TORNADO CAN NOT BE RULED OUT.

DISCUSSION...
AN UNSEASONABLY MILD AND INCREASINGLY MOIST AIRMASS WILL REMAIN IN
PLACE AHEAD OF A COLD FRONT...WHICH WAS LOCATED FROM NEAR CHANDLER
TO PAULS VALLEY TO HENRIETTA TEXAS. SCATTERED THUNDERSTORMS ARE
EXPECTED TO DEVELOP NEAR THE FRONT AS IT BEGINS TO ACCELERATE
SOUTHEASTWARD THIS AFTERNOON. WEAK TO MODERATE INSTABILITY COMBINED
WITH STRENGTHENING WIND SHEAR PROFILES WILL BE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE STORMS...INCLUDING SUPERCELLS. LARGE HAIL AND
DAMAGING WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED
TORNADO CAN NOT BE RULED OUT IN SOUTH CENTRAL AND SOUTHEAST
OKLAHOMA. THE THREAT FOR SEVERE STORMS WILL CONTINUE INTO THE
EVENING HOURS UNTIL THE FRONT CLEARS THE AREA.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...40 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER WEATHER IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE
THROUGH THURSDAY AS THE STRONG UPPER LEVEL STORM SYSTEM MOVES FROM
WEST TEXAS INTO MISSOURI. A WINTER STORM WATCH IS IN EFFECT FOR
PARTS OF NORTH CENTRAL AND CENTRAL OKLAHOMA AND A WINTER WEATHER
ADVISORY IS IN EFFECT FOR MUCH OF WESTERN OKLAHOMA TONIGHT AND
THURSDAY.

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

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.

OTHER HAZARDOUS WEATHER...
SNOW... COLD TEMPERATURES... STRONG WINDS AND LOW WIND CHILL
READINGS WILL PREVAIL AREA-WIDE ON THURSDAY. ACCUMULATING SNOW WILL
BE LIKELY ACROSS A GOOD PORTION OF OKLAHOMA AND WESTERN NORTH TEXAS.
STRONG NORTH WINDS WILL RESULT IN BLOWING SNOW... RESTRICTED
VISIBILITIES AND DRIFTING OF THE SNOW. COLD TEMPERATURES WILL
CONTINUE INTO THE EARLY PART OF NEXT WEEK.

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

$$

02/22/30
Dec 23 - 247 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
247 PM CST WED DEC 23 2009

OKZ004>006-009>011-014>016-021-240500-
/O.UPG.KOUN.WW.Y.0008.091224T0000Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
CUSTER-BECKHAM-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA...WEATHERFORD...CLINTON...
ELK CITY...SAYRE
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER WEATHER ADVISORY IS
NO LONGER IN EFFECT.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION OF UP TO 4 INCHES IN NORTHWEST AND WESTERN
OKLAHOMA AND 8 INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE
IS ALSO THE POSSIBILITY OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ017-022-023-033>035-240500-
/O.UPG.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
BLAINE-WASHITA-CADDO-HARMON-GREER-KIOWA-
INCLUDING THE CITIES OF...WATONGA...CORDELL...ANADARKO...HOLLIS...
MANGUM...HOBART
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER WEATHER ADVISORY IS
NO LONGER IN EFFECT.

* TIMING: LATE TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION UP TO 4 INCHES ACROSS WEST CENTRAL AND
SOUTHWEST OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE IS
ALSO A CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ007-012-018-024-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
GRANT-GARFIELD-KINGFISHER-CANADIAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...KINGFISHER...YUKON...
EL RENO...MUSTANG
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION OF UP TO 5 INCHES IN CENTRAL OKLAHOMA AND 8
INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A
CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ008-013-019-020-025-026-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0600Z-091225T0000Z/
KAY-NOBLE-LOGAN-PAYNE-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...GUTHRIE...
STILLWATER...OKLAHOMA CITY...CHANDLER
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM
MIDNIGHT TONIGHT TO 6 PM CST THURSDAY. THE WINTER STORM WATCH IS
NO LONGER IN EFFECT.

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION UP TO 5 INCHES IN CENTRAL OKLAHOMA AND 8
INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A
CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ031-032-042-043-047-048-050>052-240500-
/O.EXB.KOUN.WW.Y.0008.091224T1200Z-091225T0000Z/
SEMINOLE-HUGHES-PONTOTOC-COAL-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE...ADA...
COALGATE...TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 6 AM TO 6 PM CST THURSDAY.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. FREEZING
RAIN WILL ALSO BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ027>030-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.EXA.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-
INCLUDING THE CITIES OF...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY. THE WINTER STORM WATCH
IS NO LONGER IN EFFECT.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH EARLY THURSDAY
EVENING

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. FREEZING RAIN IS
ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ039>041-044>046-TXZ083>090-240500-
/O.EXA.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
STEPHENS-GARVIN-MURRAY-COTTON-JEFFERSON-CARTER-HARDEMAN-FOARD-
WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...DUNCAN...PAULS VALLEY...SULPHUR...
WALTERS...WAURIKA...ARDMORE...QUANAH...CHILLICOTHE...CROWELL...
VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...
ARCHER CITY...HOLLIDAY...LAKESIDE CITY...HENRIETTA
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY
AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. FREEZING
RAIN WILL ALSO BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ036>038-240500-
/O.CON.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
JACKSON-TILLMAN-COMANCHE-
INCLUDING THE CITIES OF...ALTUS...FREDERICK...LAWTON
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 PM CST THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST THURSDAY.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY
AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE IS
ALSO A CHANCE OF FREEZING RAIN.

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.

&&

$$
Dec 23 - 351 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
351 PM CST WED DEC 23 2009

.DISCUSSION...
HAVE UPGRADED THE NORTHERN AND WESTERN AREAS OF OKLAHOMA TO A
WINTER STORM WARNING AND ALREADY HAVE ISSUED THE WSW. 12Z MODELS
CONTINUED THE OVERNIGHT TREND OF A WETTER/SNOWIER FORECAST WITH
THE EXPECTED TRACK OF THE UPPER LOW AND LESS LIKELIHOOD OF THE DRY
SLOT SLOWING DOWN THE SHOW. ON THE POSITIVE SIDE... THE PRIMARY
NUMERIC MODELS ARE ON THE SAME PAGE WITH THE TIMING OF THE
SWITCHOVER FROM RAIN TO SNOW. BOTH THE NAM AND GFS TIME-HEIGHT
SECTIONS DO SHOW BRIEF PERIODS OF SOMEWHAT DRIER AIR IN THE
DENDRITIC GROWTH TEMPERATURES ELEVATIONS... SO THERE COULD BE A
BRIEF PERIOD OF FREEZING RAIN OR FREEZING DRIZZLE. SLEET IS NOT
OUT OF THE QUESTION IN NORTHERN OKLAHOMA BUT HAVE NOT INCLUDED
THIS IN THE PACKAGE SINCE IT WOULD BE A MINOR ISSUE COMPARED TO
THE SNOW/FREEZING PRECIP. AS COLD AIR ADVECTS INTO THE AREA... WE
CAN SEE THE PROFILE SUPPORTING SNOW IN NORTHWEST OKLAHOMA EARLY
THIS EVENING... TO THE ENID TO FORT COBB TO VERNON AREAS BY 06Z...
AND TO STILLWATER TO NORMAN TO WICHITA FALLS BY ABOUT 12Z.

OF COURSE THE MODELS DO HAVE DIFFERING OPINIONS ON SNOW AMOUNTS
AND THE AXIS OF HEAVIEST SNOW. THINK THE 12Z GFS WAS TOO
AGGRESSIVE AND HAVE GENERALLY GONE BETWEEN THE FORECAST AMOUNTS
FROM THE GFS AND NAM... ALTHOUGH SOMEWHAT ON THE LIGHTER SIDE
GIVEN THE OVERALL PATTERN EVOLUTION AND THE TENDENCY FOR THE MODEL
SNOW GRID FIELDS TO BEGIN ACCUMULATING SNOW TOO EARLY WHEN THE
PRECIP IS STILL FALLING AS RAIN INITIALLY. BUT THE FORECAST AMOUNTS
ARE STILL ENOUGH TO JUSTIFY A WINTER STORM WARNING ACROSS NORTHERN
PORTIONS OF THE AREA. THE STRONG WINDS ON THE BACK SIDE OF THE
SURFACE LOW WILL BE STRONG AND GUSTY TONIGHT INTO TOMORROW CAUSING
BLOWING SNOW AND NEAR-BLIZZARD CONDITIONS. AGAIN THINK THE GFS IS
A LITTLE TOO AGGRESSIVE WITH WIND SPEEDS GIVEN IT'S DEEPER SURFACE
LOW FARTHER WEST THAN OTHER MODELS... BUT IT WILL STILL BE QUITE
WINDY. PRECIP WILL DIMINISH ACROSS MUCH OF THE AREA TUESDAY NIGHT
ALTHOUGH LINGERING SNOW WILL STILL BE POSSIBLE IN THE NORTH INTO
FRIDAY NIGHT AS UPPER LOW ONLY SLOWLY MOVES FROM KANSAS TOWARD
IOWA.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 31 32 19 35 / 90 90 30 10
HOBART OK 29 31 20 35 / 90 70 10 0
WICHITA FALLS TX 34 36 24 40 / 90 60 10 10
GAGE OK 21 26 12 30 / 70 50 10 0
PONCA CITY OK 30 30 12 29 / 90 90 50 20
DURANT OK 40 41 23 39 / 90 80 20 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY
FOR OKZ008-013-019-020-025-026.

WINTER STORM WARNING UNTIL 6 PM CST THURSDAY FOR OKZ004>007-
009>012-014>018-021>024-033>035.

WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST
THURSDAY FOR OKZ027>030-036>041-044>046.

WINTER WEATHER ADVISORY FROM 6 AM TO 6 PM CST THURSDAY FOR
OKZ031-032-042-043-047-048-050>052.

TX...WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST
THURSDAY FOR TXZ083>090.

&&

$$
Dec 23 - 455 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
455 PM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-240000-
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-
455 PM CST WED DEC 23 2009

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT... EXTENDING THROUGH THE ATOKA AND DURANT AREAS JUST
BEFORE 5 PM... WILL MOVE SLOWLY EAST THROUGH EARLY EVENING. WINDS
WILL SHIFT TO THE NORTHWEST AND TEMPERATURES WILL FALL QUICKLY
THROUGH THE 60S INTO THE 50S IN THESE AREAS BY 7 PM. THERE IS STILL
A SLIGHT CHANCE OF THUNDERSTORMS DEVELOPING THIS EVENING ALONG THE
FRONT IN SOUTHEASTERN OKLAHOMA... BUT THE RISK OF SEVERE WEATHER
WILL DIMINISH ONCE THE FRONT PASSES AT ANY GIVEN LOCATION.

EXCEPT FOR THE POSSIBILITY OF SOME PATCHY LIGHT RAIN OR DRIZZLE...
MOST OF WESTERN NORTH TEXAS AND WESTERN AND CENTRAL OKLAHOMA WILL
REMAIN DRY THROUGH MID EVENING. RADAR INDICATES RAIN INCREASING IN
COVERAGE OVER MUCH OF WEST TEXAS AND SPREADING SLOWLY EAST... AHEAD
OF A STRONG STORM SYSTEM CENTERED OVER CENTRAL NEW MEXICO.
TEMPERATURES ARE FALLING IN WEST TEXAS... AND IT APPEARS LIKELY THAT
RAIN WILL BEGIN CHANGING TO SNOW IN THAT AREA BY MID EVENING. AS THE
PRECIPITATION SPREADS EAST... RAIN MAY BEGIN ON PARTS OF WESTERN
OKLAHOMA AND WESTERN NORTH TEXAS LATE THIS EVENING... MOST LIKELY
AFTER 8 OR 9 PM. WITH TEMPERATURES CONTINUING TO FALL THIS
EVENING... ANY RAIN IN THESE AREAS WILL LIKELY MIX WITH OR CHANGE TO
SNOW BETWEEN 9 PM AND MIDNIGHT. BUT UNTIL 9 PM... TRAVEL PROBLEMS
ARE NOT ANTICIPATED.

$$

24
Dec 23 - 550 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
550 PM CST WED DEC 23 2009

.AVIATION...
A STRONG STORM SYSTEM WILL TRACK NE FROM CENTRAL TX THIS
EVENING... TO CENTRAL AR BY 18Z TOMORROW. PRECIPITATION IS
EXPECTED TO DEVELOP AND SPREAD NE ACROSS TX/OK TONIGHT AND THU...
WHILE COLDER AIR ADVANCES SE. RA AND DZ WILL CHANGE OVER TO SN
OVERNIGHT AT ALL TAF SITES... AND A FEW HOURS OF FZDZ... FZRA...
AND/OR PL WILL BE POSSIBLE DURING THE TRANSITION PERIOD. STRONG
WINDS WILL CAUSE BLSN AT ALL SITES AFTER SN BEGINS TO
ACCUMULATE... AND VISIBILITIES WILL BE DEPENDENT MAINLY ON HOW
MUCH SN FALLS NEAR/UPSTREAM OF EACH TAF SITE.
Dec 23 - 655 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
655 PM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-240300-
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-
655 PM CST WED DEC 23 2009

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT... JUST EAST OF ATOKA AND DURANT EARLY THIS EVENING...
WILL MOVE SLOWLY EAST OUT OF ATOKA AND BRYAN COUNTIES BY 9 PM. WINDS
WILL SHIFT TO THE NORTH AND TEMPERATURES WILL FALL INTO THE 50S.
THERE IS STILL A SLIGHT CHANCE OF THUNDERSTORMS DEVELOPING THIS
EVENING NEAR THE FRONT... BUT THE RISK OF SEVERE WEATHER WILL
DIMINISH ONCE THE FRONT PASSES AT ANY GIVEN LOCATION.

MOST OF WESTERN NORTH TEXAS AND WESTERN AND CENTRAL OKLAHOMA WILL
REMAIN DRY THROUGH MID EVENING. RADAR INDICATES RAIN INCREASING IN
COVERAGE OVER MUCH OF WEST TEXAS AND SPREADING SLOWLY EAST... AHEAD
OF A STRONG STORM SYSTEM CENTERED OVER NEW MEXICO. TEMPERATURES ARE
FALLING IN WEST TEXAS... AND IT APPEARS LIKELY THAT RAIN WILL BEGIN
CHANGING TO SNOW IN THAT AREA BY MID EVENING. AS THE PRECIPITATION
SPREADS EAST... RAIN MAY BEGIN IN PARTS OF WESTERN OKLAHOMA AND
ESPECIALLY OVER WESTERN NORTH TEXAS LATER THIS EVENING... MOST
LIKELY AFTER 9 PM. WITH TEMPERATURES CONTINUING TO FALL... ANY RAIN
IN THESE AREAS WILL LIKELY CHANGE TO SNOW BY MIDNIGHT. BUT UNTIL 9
PM... TRAVEL PROBLEMS ARE NOT ANTICIPATED.

$$

24
Dec 23 - 900 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
900 PM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-240300-
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-
900 PM CST WED DEC 23 2009

.REGIONAL WEATHER DISCUSSION...

RAIN... AND ISOLATED THUNDERSTORMS... WILL INCREASE LATE THIS
EVENING OVER WESTERN PARTS OF NORTH TEXAS AND PARTS OF SOUTHWESTERN
OKLAHOMA. THE RAIN WILL MIX WITH OR CHANGE TO SNOW IN MANY OF THESE
AREAS BY MIDNIGHT.

RADAR AT 9 PM INDICATED A LARGE EXPANDING AREA OF PRECIPITATION
SPREADING EAST FROM MUCH OF WESTERN NORTH TEXAS. THE LEADING EDGE AT
9 PM WAS FROM NEAR CHEYENNE... TO ALTUS... TO VERNON... TO SEYMOUR.
TEMPERATURES IN THESE AREAS GENERALLY WERE IN THE 30S AND LOWER 40S
AS OF MID EVENING... BUT WERE FALLING. SO WHILE MANY AREAS WILL
START AS RAIN... A CHANGEOVER TO SNOW IS LIKELY IN MOST AREAS BY
MIDNIGHT. INCREASING NORTH WINDS MAY RESULT IN BLOWING AND DRIFTING
OF ANY ACCUMULATING SNOW LATE TONIGHT OVER SOUTHWESTERN OKLAHOMA AND
WESTERN NORTH TEXAS.

AS THE PRECIPITATION CONTINUES TO SPREAD EAST AND TEMPERATURES
CONTINUE TO FALL... MORE OF THE PRECIPITATION WILL FALL AS SNOW.
ALTHOUGH PRECIPITATION IN CENTRAL OKLAHOMA MAY BEGIN AS RAIN LATER
TONIGHT... THE RAIN WILL CHANGE OVER TO SNOW OVER MOST OF THE MIDDLE
THIRD OF OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH
WINDS WILL LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL
CONDITIONS ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA
BEGINNING WITHIN A FEW HOURS OF DAYBREAK THURSDAY MORNING.

$$

24
Dec 23 - 1052 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1052 PM CST WED DEC 23 2009

OKZ004>006-009>011-014-015-241300-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
/O.NEW.KOUN.WW.Y.0009.091224T0452Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
1052 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL 6 PM CST THURSDAY FOR MUCH OF NORTHWESTERN OKLAHOMA. THE WINTER
STORM WARNING FOR NORTHWESTERN OKLAHOMA IS NO LONGER IN EFFECT.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION OF UP TO 4 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

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.

&&

$$

OKZ027>030-036>041-044>046-TXZ083>090-241300-
/O.UPG.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
/O.EXA.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-JACKSON-TILLMAN-COMANCHE-
STEPHENS-GARVIN-MURRAY-COTTON-JEFFERSON-CARTER-HARDEMAN-FOARD-
WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...ALTUS...FREDERICK...LAWTON...DUNCAN...PAULS VALLEY...
SULPHUR...WALTERS...WAURIKA...ARDMORE...QUANAH...CHILLICOTHE...
CROWELL...VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...
ARCHER CITY...HOLLIDAY...LAKESIDE CITY...HENRIETTA
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS EXPANDED THE WINTER
STORM WARNING TO INCLUDE ALL OF WESTERN NORTH TEXAS AND SOUTHERN
OKLAHOMA. THE WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST
THURSDAY. THE WINTER WEATHER ADVISORY FOR WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA IS NO LONGER IN EFFECT.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY
AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION OF 4 TO 8
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ031-032-042-043-047-048-050>052-241300-
/O.UPG.KOUN.WW.Y.0008.091224T1200Z-091225T0000Z/
/O.EXA.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
SEMINOLE-HUGHES-PONTOTOC-COAL-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE...ADA...
COALGATE...TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW... WHICH IS IN EFFECT UNTIL 6
PM CST THURSDAY FOR MUCH OF SOUTHEASTERN AND EAST CENTRAL
OKLAHOMA. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION OF 4 TO 8
INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ008-013-019-020-025-026-241300-
/O.EXT.KOUN.WS.W.0004.091224T0452Z-091225T0000Z/
KAY-NOBLE-LOGAN-PAYNE-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...GUTHRIE...
STILLWATER...OKLAHOMA CITY...CHANDLER
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM CST THURSDAY...

THE WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST THURSDAY FOR
MOST OF CENTRAL AND NORTH CENTRAL OKLAHOMA.

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION OF 4 TO 8 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A
CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

OKZ007-012-016>018-021>024-033>035-241300-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
GRANT-GARFIELD-CUSTER-BLAINE-KINGFISHER-BECKHAM-WASHITA-CADDO-
CANADIAN-HARMON-GREER-KIOWA-
INCLUDING THE CITIES OF...MEDFORD...ENID...WEATHERFORD...
CLINTON...WATONGA...KINGFISHER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...HOLLIS...MANGUM...HOBART
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...

A WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST THURSDAY FOR
MOST OF WEST CENTRAL... CENTRAL... AND SOUTHERN OKLAHOMA.

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
AND ACCUMULATION OF 4 TO 8 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
BLOWING SNOW AND LOW WIND CHILL TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS
WILL MAKE TRAVEL HAZARDOUS.

&&

$$
Dec 23 - 1100 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1100 PM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-240700-
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-
1100 PM CST WED DEC 23 2009

.REGIONAL WEATHER DISCUSSION...

RAIN... AND ISOLATED THUNDERSTORMS... WILL INCREASE LATE THIS
EVENING OVER WESTERN PARTS OF NORTH TEXAS AND PARTS OF SOUTHWESTERN
OKLAHOMA. THE RAIN WILL MIX WITH OR CHANGE TO SNOW IN MANY OF THESE
AREAS BY MIDNIGHT.

RADAR AT 11 PM INDICATED AN INCREASING AREA OF PRECIPITATION...
INCLUDING A FEW THUNDERSTORMS... SPREADING NORTHEAST FROM MUCH OF
WESTERN NORTH TEXAS. THE LEADING EDGE AT 11 PM WAS FROM NEAR
CHEYENNE... TO FREDERICK... TO WICHITA FALLS. TEMPERATURES IN THESE
AREAS GENERALLY WERE IN THE 30S TO AROUND 40 AS OF LATE EVENING...
BUT WERE FALLING. SO WHILE MANY AREAS WILL START AS RAIN... A
CHANGEOVER TO SLEET AND SNOW IS LIKELY IN MOST AREAS BY 1 AM.
INCREASING NORTH WINDS MAY RESULT IN BLOWING AND DRIFTING OF ANY
ACCUMULATING SNOW LATE TONIGHT OVER SOUTHWESTERN OKLAHOMA AND
WESTERN NORTH TEXAS.

AS THE PRECIPITATION CONTINUES TO SPREAD NORTHEAST AND TEMPERATURES
CONTINUE TO FALL... MORE OF THE PRECIPITATION WILL FALL AS SNOW.
ALTHOUGH PRECIPITATION IN CENTRAL OKLAHOMA MAY BEGIN AS RAIN LATER
TONIGHT... THE RAIN WILL CHANGE OVER TO SNOW OVER MOST OF THE MIDDLE
THIRD OF OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH
WINDS WILL LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL
CONDITIONS ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA
BEGINNING WITHIN A FEW HOURS OF DAYBREAK THURSDAY MORNING.

$$

24
Dec 23 - 1132 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1132 PM CST WED DEC 23 2009

.AVIATION...
A LARGE AREA OF RA... PL... AND SN ACROSS SW OK AND WESTERN NORTH
TX IS THE INITIAL SURGE OF PRECIPITATION ASSOCIATED WITH THE
APPROACHING WINTER STORM SYSTEM. ADDITIONAL AREAS OF MAINLY SN ARE
EXPECTED TO DEVELOP OVERNIGHT AND THU MORNING. ACCUMULATING SN IS
LIKELY... AND WITH STRONG WINDS... BLSN IS A NEAR CERTAINTY
WHEREVER SNOW DOES ACCUMULATE MORE THAN AN INCH OR SO. THERE IS
STILL SOME SIGNIFICANT UNCERTAINTY REGARDING VSBYS THU IN THE BLSN...
BUT IFR VSBYS ARE PROBABLE AT ALL SITES BUT KGAG AND KWWR. STRONG
DOWNWARD MOTION IS EXPECTED AFTER SUNSET THU... WHICH SHOULD CLEAR
THE SKY QUICKLY FROM WEST TO EAST. DIMINISHING WINDS WILL ALLOW
VSBYS TO IMPROVE SIGNIFICANTLY AFTER SUNSET.
Dec 24 - 100 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
100 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-240900-
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-
100 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

RADAR AT 1 AM INDICATED AN INCREASING AREA OF PRECIPITATION...
SPREADING ACROSS WESTERN NORTH TEXAS AND ADJACENT AREAS OF WESTERN
OKLAHOMA. THE LEADING EDGE AT 1 AM WAS FROM NEAR CHEYENNE... TO
LAWTON... TO WAURIKA. THE PRECIPITATION HAS CHANGED TO SNOW OVER FAR
WESTERN PARTS OF OKLAHOMA AND NORTH TEXAS...GENERALLY WEST OF A
CORDELL...TO ALTUS TO SEYMOUR TEXAS LINE. EAST OF THAT LINE COLD
RAIN PREVAILED. ISOLATED THUNDERSTORMS WERE ALSO OCCURRING NEAR THE
RED RIVER VALLEY IN SOUTH CENTRAL OKLAHOMA.

THE PRECIPITATION WILL CONTINUE TO SPREAD NORTHEAST INTO CENTRAL
OKLAHOMA OVERNIGHT. AS THE PRECIPITATION CONTINUES TO SPREAD
NORTHEAST AND TEMPERATURES CONTINUE TO FALL...MORE OF THE
PRECIPITATION WILL FALL AS SNOW. THE PRECIPITATION IS EXPECTED TO
CHANGE TO SNOW OVER MOST WESTERN NORTH TEXAS AND THE WESTERN THIRD
OF OKLAHOMA BY 3 AM TO 4 AM...AND THROUGH THE MIDDLE THIRD OF
OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH WINDS WILL
LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL CONDITIONS
ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA BEGINNING WITHIN
A FEW HOURS OF DAYBREAK THURSDAY MORNING.

$$

24/II
Dec 24 - 130 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
130 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241100-
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-
130 AM CST THU DEC 24 2009

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

.DAY ONE...OVERNIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE...MAINLY OVER PARTS OF
SOUTHERN OKLAHOMA OVERNIGHT. NO SEVERE STORMS ARE EXPECTED.

DISCUSSION...
A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE SLOWLY EASTWARD ACROSS
WEST TEXAS OVERNIGHT. AS THIS SYSTEM... MOVES EASTWARD WIDESPREAD
PRECIPITATION WILL SPREAD ACROSS WESTERN NORTH TEXAS AND OKLAHOMA.
MEANWHILE COLDER AIR WILL CONTINUE TO SURGE SOUTHWARD ACROSS THE
AREA. RAIN WILL GRADUALLY CHANGE TO SNOW OVER MUCH OF WESTERN NORTH
TEXAS AND THE WESTERN HALF OF OKLAHOMA BY SUNRISE AS THE COLDER AIR
DEEPENS. A FEW THUNDERSTORMS WILL BE POSSIBLE OVERNIGHT...MAINLY IN
SOUTHERN OKLAHOMA. INSTABILITY WILL REMAIN LIMITED AND NO SEVERE
STORMS ARE EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER STORM WARNING ARE IN EFFECT OVERNIGHT AND INTO THURSDAY FOR
WESTERN NORTH AND MUCH OF OKLAHOMA. SIGNIFICANT ACCUMULATIONS OF
SNOW CAN BE EXPECTED...ESPECIALLY ACROSS WESTERN NORTH TEXAS AND
THE SOUTHERN HALF OF OKLAHOMA.

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

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.

OTHER HAZARDOUS WEATHER...
SNOW... COLD TEMPERATURES... STRONG WINDS AND LOW WIND CHILL
READINGS WILL PREVAIL AREA-WIDE ON THURSDAY. ACCUMULATING SNOW WILL
BE LIKELY ACROSS A GOOD PORTION OF OKLAHOMA AND WESTERN NORTH TEXAS.
STRONG NORTH WINDS WILL RESULT IN BLOWING SNOW... RESTRICTED
VISIBILITIES AND DRIFTING OF THE SNOW. COLD TEMPERATURES WILL
CONTINUE INTO THE EARLY PART OF NEXT WEEK.

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

$$

02/22/30
Dec 24 - 230 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
230 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241000-
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-
230 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

PRECIPITATION CONTINUES TO EXPAND ACROSS WESTERN NORTH TEXAS AND
MUCH OF WESTERN AND SOUTHERLY OKLAHOMA EARLY THIS MORNING. RAIN WAS
THE PREDOMINANT PRECIPITATION TYPE GENERALLY SOUTH OF INTERSTATE 40
AND EAST OF A FREDERICK TO HINTON LINE. A FEW THUNDERSTORMS WERE
ALSO DEVELOPING OVER PARTS OF SOUTH CENTRAL OKLAHOMA. IN FAR WESTERN
OKLAHOMA AND NORTH TEXAS THE RAIN HAD CHANGED TO SNOW...WHILE A
MIXTURE OF RAIN...FREEZING RAIN...SLEET AND SNOW WAS FALLING IN AN
AREA FROM AROUND ALTUS AND HOBART TO NEAR CLINTON.

PRECIPITATION WILL CONTINUE TO EXPAND OVER SOUTHERN PLAINS EARLY
THIS MORNING AS A STRONG UPPER LEVEL STORM SYSTEM MOVES SLOWLY
EASTWARD THROUGH WEST TEXAS. AT THE SAME TIME...STRONG NORTH WINDS
WILL CONTINUE TO PULL COLD AIR INTO THE AREA. WINTRY PRECIPITATION
WILL CONTINUE OVER WESTERN PARTS OF OKLAHOMA AND NORTH TEXAS AND
RAIN WILL GRADUALLY CHANGE TO A MIXTURE OF RAIN ...FREEZING
RAIN...SLEET AND SNOW INTO PORTIONS OF CENTRAL OKLAHOMA EARLY THIS
MORNING AS THE COLD AIR CONTINUES TO DEEPEN. FARTHER EAST...RAIN AND
A FEW THUNDERSTORMS WILL PERSIST. DRIVING CONDITIONS WILL LIKELY
BEGIN TO DETERIORATE THIS MORNING AS THE THE WINTER PRECIPITATION
AREA EXPANDS. IN ADDITION THE COLD TEMPERATURES AND STRONG WINDS
WILL RESULT IN LOW WIND CHILL VALUES.

$$

II
Dec 24 - 330 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
330 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241100-
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-
330 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

PRECIPITATION CONTINUES TO EXPAND ACROSS WESTERN NORTH TEXAS AND
MUCH OF WESTERN AND SOUTHERLY OKLAHOMA EARLY THIS MORNING AND
ADVANCE OF A STRONG UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. RAIN
WAS THE PREDOMINANT PRECIPITATION TYPE GENERALLY SOUTH OF INTERSTATE
40 AND EAST OF A FREDERICK TO HINTON LINE. IN FAR WESTERN OKLAHOMA
AND NORTH TEXAS THE RAIN HAD CHANGED TO SNOW...WHILE A MIXTURE OF
RAIN...FREEZING RAIN...SLEET AND SNOW WAS FALLING IN AN AREA FROM
AROUND ALTUS AND HOBART TO NEAR CLINTON.

PRECIPITATION WILL CONTINUE TO EXPAND NORTHEASTWARD THROUGH MUCH OF
CENTRAL OKLAHOMA THIS MORNING AS THE UPPER LEVEL SYSTEM MOVES SLOWLY
EASTWARD. AT THE SAME TIME...STRONG NORTH WINDS WILL CONTINUE TO
PULL COLD AIR INTO THE AREA. A MIXTURE OF SNOW...FREEZING RAIN AND
SLEET WILL CONTINUE EARLY THIS MORNING OVER FAR WESTERN PARTS OF
OKLAHOMA AND NORTH TEXAS BEFORE GRADUALLY TRANSITIONING TO ALL SNOW.
AS A RESULT ROADS IN THESE AREAS WILL BECOME SLICK AND HAZARDOUS.
RAIN IN CENTRAL OKLAHOMA WILL GRADUALLY CHANGE TO FREEZING RAIN AND
SLEET DURING THE MORNING AS THE COLDER AIR MOVES. THE WINTERY MIX
WILL LIKELY REACH PARTS OF THE OKLAHOMA CITY METRO AREA AROUND OR
SHORTLY AFTER SUNRISE.

$$

II
Dec 24 - 417 AM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
417 AM CST THU DEC 24 2009

OKZ007-008-012-013-018>020-024>032-039>043-045>048-050>052-241900-
/O.EXT.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-
STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-JEFFERSON-CARTER-JOHNSTON-
ATOKA-LOVE-MARSHALL-BRYAN-
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...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WAURIKA...ARDMORE...TISHOMINGO...
ATOKA...MARIETTA...MADILL...DURANT
417 AM CST THU DEC 24 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 PM CST THIS
EVENING...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: THE CHANGE FROM RAIN TO SNOW WILL BE DELAYED THIS
MORNING IN CENTRAL AND NORTH CENTRAL OKLAHOMA...INCLUDING
OKLAHOMA CITY...GUTHRIE...STILLWATER...AND PONCA CITY. A MIX OF
FREEZING RAIN AND SLEET...POSSIBLY HEAVY AT TIMES...WILL CREATE
VERY SLICK AND HAZARDOUS CONDITIONS BY MIDDAY. HEAVY SNOW IS
THEN EXPECTED DURING THE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO
REDUCE VISIBILITY TO NEAR ZERO AT TIMES...WHICH CAN BE
DISORIENTING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
THIS IS A LIFE THREATENING STORM.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-241900-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
417 AM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING.

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS WILL
FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO
REDUCE VISIBILITY TO NEAR ZERO AT TIMES...WHICH CAN BE
DISORIENTING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
THIS IS A LIFE THREATENING STORM.

&&

$$

OKZ004>006-009>011-014-015-241900-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
417 AM CST THU DEC 24 2009

...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.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING
SNOW AND ACCUMULATION OF UP TO 4 INCHES.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS WILL
FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$

BURKE
Dec 24 - 453 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
453 AM CST THU DEC 24 2009

.DISCUSSION...

...MAJOR WINTER STORM TODAY AND THIS EVENING...

THE CHRISTMAS EVE STORM NOW UNFOLDING HAS BEHAVED LIKE A GIFT
WRAPPED IN MULTIPLE BOXES...IT IS FULL OF SURPRISES. ALL ALONG...THE
MODELS HAVE SHOWN AN UNUSUAL AMOUNT OF SPREAD REGARDING THE TRACK
AND INTENSITY OF THE CYCLONE.

...TRENDS...
SOME IMPORTANT TRENDS THAT SHOWED UP OVERNIGHT INCLUDE...THE MID AND
UPPER CYCLONE SHOWING MORE CLOSED HEIGHT CONTOURS AND TRACKING A
LITTLE FARTHER SOUTH. THIS MEANS MORE INTENSE LIFTING FOR A LONGER
DURATION FOR A FAIRLY BROAD AREA ALONG AND NORTH OF THE TRACK. THE
NAM...ECMWF...AND NOW RUC GENERALLY AGREE ON THE TRACK AND INTENSITY
OF THE SURFACE LOW...MAINTAINING ABOUT 989 MB ALONG A PATH THROUGH
EXTREME SOUTHEAST OKLAHOMA...AND CURVING TOWARD NORTHWEST ARKANSAS.
SURFACE AND SATELLITE OBSERVATIONS SEEM TO BE BEARING THIS OUT AS A
GOOD LIKELIHOOD. WE WERE ABLE THEN...TO USE THE 00Z AND 06Z NAM
FIELDS WITH SOME CONFIDENCE. INCREDIBLY...THIS MEANS THAT THE
CYCLONE IS VERIFYING SOMEWHERE TOWARD THE EXTREME SIDE OF WHAT WAS
THOUGHT TO BE POSSIBLE JUST ONE TO TWO DAYS AGO. THE DEVELOPING
TRACK AND INTENSITY SUGGESTS A MAJOR WINTER STORM HAS JUST BEGUN IN
OUR TEXAS COUNTIES AND WESTERN OKLAHOMA...AND WILL HAVE SEVERE
IMPACTS ACROSS THE REMAINDER OF NORTHERN...CENTRAL...AND SOUTHERN
OKLAHOMA THROUGH THIS EVENING.

...ICE POTENTIAL...
WHILE SNOW AND BLOWING SNOW ARE THE PRIMARY IMPACT...WE HAVE ALSO
INTRODUCED A PERIOD OF MIXED PRECIPITATION...INCLUDING FREEZING RAIN
AND SLEET...FOR CENTRAL AND NORTH CENTRAL OKLAHOMA...MAINLY THROUGH
NOON TODAY. OUR SPECIAL 06 UTC SOUNDING SHOWED A SUBSTANTIAL WARM
NOSE AT 800-700 MB. WITH THE MID LEVEL LOW CLOSING OFF NEAR THE RED
RIVER...EASTERLY WINDS WILL HOLD THE WARM AIR IN PLACE FROM THE OKC
METRO AREA NORTHWARD. AS COLD AIR SURGES IN AT THE SURFACE...THIS
CREATES A SETUP FOR ICE FROM MID MORNING TO MIDDAY. THE EFFECT IS
MORE PRONOUNCED IN THE RUC...AND THE NCEP PRECIP TYPE ALGORITHM
AVAILABLE PER THE SPC WEB SITE PAINTS A STRIPE OF ICE FROM OKC NORTH
ALONG INTERSTATE 35.

...HEAVY SNOW...
BY MIDDAY TO EARLY AFTERNOON...STRONG DYNAMIC LIFTING AND SOME COLD
ADVECTION SHOULD CHANGE ALL OF OUR FORECAST AREA OVER TO SNOW.
DESPITE THE LOSS OF A FEW SNOW HOURS DUE TO THE MORNING ICING...WE
STILL FEEL THERE WILL BE SIGNIFICANT SNOW ACCUMULATIONS FROM
OKLAHOMA CITY NORTH. THE SNOWFALL WILL BE GREATEST FARTHER
SOUTH...WHERE STRONG LIFTING WILL BEGIN MUCH EARLIER IN THE MORNING.
IN THE 06Z NAM...WE SEE STRONG VERTICAL MOTION THROUGH THE DENDRITIC
CRYSTAL GROWTH ZONE OVER NEARLY THE ENTIRE FORECAST AREA THIS
AFTERNOON. IT IS VERY DIFFICULT TO FORECAST HOW MUCH SNOW WILL
ACCUMULATE ON A GIVEN SURFACE...SINCE GROUND TEMPERATURES ARE ON THE
MILD SIDE...AND THE EVENT IS OCCURRING AT DAYTIME. IT IS
LIKELY...HOWEVER...THAT THERE WILL BE PERIODS OF HEAVY SNOW...WITH
ACCUMULATION OR 1 TO EVEN 2 INCHES PER HOUR...SOMEWHERE FROM CENTRAL
INTO SOUTH CENTRAL OKLAHOMA. THE 06Z NAM SNOW ACCUMULATION ALGORITHM
IS NOT TOO FAR OFF FROM OUR THINKING...AND WE RAISED SNOW TOTALS IN
THOSE AREAS.

...NEAR BLIZZARD...
AN ARCTIC FRONT WILL MOVE FROM WESTERN KANSAS THIS MORNING TO THE
INTERSTATE 44 CORRIDOR AT EARLY AFTERNOON. COLDER...DRIER AIR IN A
SHALLOW LAYER NEAR THE GROUND...ALONG WITH VERY GUSTY WINDS...WILL
INCREASE THE AMOUNT OF BLOWING SNOW AND LOWER WIND CHILL
TEMPERATURES TO AROUND 10 DEGREES ABOVE ZERO. IT IS EVEN POSSIBLE
THAT A BLIZZARD WARNING WOULD BE JUSTIFIED FOR A FEW HOURS THIS
AFTERNOON...SHOULD THE SNOW ACCUMULATION AND BLOWING SNOW OCCUR AS
FORECAST. THIS IS A LIFE THREATENING STORM.

...AFTER THE STORM...
WE USED THE COLDER NAM AND ECMWF TEMPERATURES IN THE DAYS TO
COME...GIVEN WIDESPREAD SNOW COVER. THE GFS DID NOT SEEM TO ACCOUNT
FOR THIS. WINDS ARE EXPECTED TO DECREASE RATHER QUICKLY IN THE
SECOND HALF OF THURSDAY NIGHT...SO THIS KEEPS WIND CHILLS JUST ABOVE
THE ADVISORY CRITERIA...AT LEAST IN THE CURRENT FORECAST. THIS
SHOULD BE REEVALUATED THIS EVENING. AFTER SEVERAL DAYS OF
COLD...THERE IS ANOTHER STORM SYSTEM SET TO BRING A CHANCE OF RAIN
OR SNOW BY NEXT TUESDAY AND WEDNESDAY.

...THANKS...
TO SURROUNDING NWS FORECAST OFFICES AND THE HPC AND SPC FOR THEIR
COLLABORATION THIS MORNING.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 31 14 29 14 / 100 40 0 0
HOBART OK 30 11 31 12 / 100 20 10 0
WICHITA FALLS TX 34 12 34 14 / 100 20 0 0
GAGE OK 25 14 28 16 / 70 10 0 0
PONCA CITY OK 31 17 24 16 / 100 60 10 10
DURANT OK 45 20 33 19 / 100 50 0 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ007-008-
012-013-018>020-024>032-039>043-045>048-050>052.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR
OKZ004>006-009>011-014-015.

WINTER STORM WARNING UNTIL 6 PM CST THIS EVENING FOR OKZ016-017-
021>023-033>038-044.

TX...WINTER STORM WARNING UNTIL 6 PM CST THIS EVENING FOR TXZ083>090.

&&

$$

02/22
Dec 24 - 545 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
545 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241300-
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-
545 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING AS AN UPPER
LEVEL STORM IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER WEST
TEXAS. AT 545 AM...SNOW WAS PREVALENT...MAINLY WEST OF A SEYMOUR
TEXAS TO WEATHERFORD OKLAHOMA LINE. AN AREA OF RAIN...FREEZING
RAIN...SLEET AND SOME SNOW EXTENDED FROM AROUND WICHITA FALLS
NORTHWARD THROUGH LAWTON TO WESTERN PARTS OF THE OKLAHOMA CITY METRO
AREA. MEANWHILE...COLD RAIN CONTINUED OVER THE REMAINDER OF CENTRAL
AND SOUTHEAST OKLAHOMA...MAINLY SOUTH OF INTERSTATE 44. NORTHERLY
WINDS HAVE ALSO INCREASED THIS MORNING. SUSTAINED WINDS OF 20 TO 35
MPH WERE COMMON...WITH NUMEROUS GUSTS OVER 40 MPH.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITIES.

ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN WESTERN OKLAHOMA
AND NORTH TEXAS AND CONDITIONS WILL LIKELY DETERIORATE FURTHER EAST
DURING THE MORNING.

$$

II
Dec 24 - 611 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
611 AM CST THU DEC 24 2009

.AVIATION...THE TAFS ARE NECESSARILY PESSIMISTIC ON CEILINGS AND
VISIBILITY...AS A MAJOR WINTER STORM TAKES SHAPE DURING THE DAY.
THE CHANGE TO SNOW HAD REACHED KCSM...AND A RAIN TO SNOW MIX WAS
REPORTED AROUND KHBR AND KLAW. MIXED PRECIPITATION WILL PERSIST
LONGEST IN CENTRAL AND NORTH CENTRAL OKLAHOMA BEFORE CHANGING TO
SNOW. WITH INTENSE MID AND UPPER LEVEL LIFT ARRIVING TODAY...SNOW
SHOULD BECOME HEAVY AT TIMES. EQUALLY AS IMPORTANT ARE THE
WINDS...WHICH WERE ALREADY GUSTING OVER 40 KNOTS. THIS WAS
INDICATIVE OF A DEEPENING...INTENSE CYCLONE...AND THE WINDS WILL
ONLY INCREASE FURTHER WITH THE ARRIVAL OF AN ARCTIC FRONT DURING
THE DAY. WHERE SNOW ACCUMULATE...BLOWING SNOW WILL FURTHER REDUCE
VISIBILITY. IMPROVEMENT WILL BE SLOW DURING THE EVENING...BUT BY
LATE IN THE PERIOD...THE STORM WILL EXIT TO THE EAST...AND WIND
SPEEDS WILL DECREASE SIGNIFICANTLY AFTER MIDNIGHT.
Dec 24 - 645 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
645 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241500-
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 DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING IN ADVANCE
OF AN UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. AT 645 AM...SNOW WAS
PREVALENT...MAINLY WEST OF A WICHITA FALLS TO LAWTON...TO HINTON
LINE. AN AREA OF RAIN...FREEZING RAIN...SLEET AND SOME SNOW EXTENDED
FROM AROUND WICHITA FALLS NORTHWEASTWARD THROUGH WESTERN PARTS OF
THE OKLAHOMA CITY METRO AREA. MEANWHILE...COLD RAIN CONTINUED OVER
THE REMAINDER OF CENTRAL AND SOUTHEAST OKLAHOMA...MAINLY SOUTH OF
INTERSTATE 44. NORTHERLY WINDS HAVE ALSO INCREASED THIS MORNING.
SUSTAINED WINDS OF 20 TO 35 MPH WERE COMMON...WITH NUMEROUS GUSTS
OVER 40 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF
SNOW AND REDUCED VISIBILITY IN WESTERN OKLAHOMA AND NORTH TEXAS.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITIES. ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN
WESTERN OKLAHOMA AND NORTH TEXAS AND CONDITIONS WILL LIKELY
DETERIORATE FURTHER EAST DURING THE MORNING.

$$

II
Dec 24 - 755 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
755 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241800-
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-
755 AM CST THU DEC 24 2009

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

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

THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL AFFECT PARTS OF OKLAHOMA TODAY...BUT SEVERE
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
COLD AND STABLE LOW LEVEL AIR WILL DEEPEN THROUGHOUT THE DAY.
INTENSE LOW PRESSURE ALOFT WILL GENERATE ENOUGH LIFTING TO GENERATE
SCATTERED THUNDERSTORMS IN PARTS OF SOUTHERN AND CENTRAL OKLAHOMA.
THESE STORMS WILL PRODUCE A VARIETY OF PRECIPITATION...RANGING FROM
RAIN TO FREEZING RAIN...SMALL HAIL...SLEET...AND EVEN SNOW. BURSTS
OF HEAVY SLEET AND SNOW WILL ACCOMPANY THE THUNDERSTORMS THIS
AFTERNOON. BY EVENING...INTENSE LIFT WILL MOVE EAST WITH THE UPPER
LEVEL LOW...ENDING THE CHANCE OF THUNDER.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY DEC 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
A DANGEROUS WINTER STORM IS UNFOLDING OVER ALL OF OKLAHOMA AND
WESTERN NORTH TEXAS. PLEASE REFER TO THE LATEST VERSION OF THIS
PRODUCT FOR MORE INFORMATION.

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

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
COLD ARCTIC AIR WILL SLIDE INTO THE SOUTHERN PLAINS THURSDAY
NIGHT...AND REMAIN IN PLACE THROUGH THE WEEKEND. WITH FRESH SNOW ON
THE GROUND...TEMPERATURES MAY FALL VERY LOW AT NIGHT...INTO THE
SINGLE DIGITS ABOVE ZERO...AND RISE ONLY TO NEAR FREEZING IN THE
DAY. SOME LOCATIONS WILL SEE AN EXTENDED PERIOD OF TIME WITH SUB
FREEZING WEATHER. WIND CHILL TEMPERATURES WILL APPROACH ZERO DEGREES
AT TIMES. IN ADDITION...ANOTHER UPPER LEVEL TROUGH WILL APPROACH THE
REGION NEXT WEEK...BRINGING A CHANCE OF RAIN AND SNOW ON TUESDAY AND
WEDNESDAY.

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

$$

BURKE
Dec 24 - 845 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
845 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241600-
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-
845 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING IN ADVANCE
OF AN UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. AT 845 AM...SNOW WAS
PREVALENT...MAINLY WEST OF A WICHITA FALLS TO LAWTON...TO ANADARKO
AND HINTON LINE. AN AREA OF RAIN...FREEZING RAIN...SLEET AND SOME
SNOW ALONG AND WEST OF INTERSTATE 35... INCLUDING THE OKLAHOMA CITY
METRO AREA. MEANWHILE...COLD RAIN CONTINUED OVER THE REMAINDER OF
CENTRAL AND SOUTHEAST OKLAHOMA... MAINLY EAST OF INTERSTATE 35.
NORTHERLY WINDS CONTINUED WITH SUSTAINED WINDS OF 25 TO 35 MPH WERE
COMMON...WITH NUMEROUS GUSTS OVER 40 MPH. THIS IS CAUSING
CONSIDERABLE BLOWING AND DRIFTING OF SNOW AND REDUCED VISIBILITY IN
WESTERN OKLAHOMA AND NORTH TEXAS.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED
VISIBILITIES. ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN
WESTERN OKLAHOMA AND NORTH TEXAS AND CONDITIONS WILL LIKELY
DETERIORATE FURTHER EAST DURING THE MORNING.

$$

II/TY
Dec 24 - 941 AM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
941 AM CST THU DEC 24 2009

OKZ018>020-024>031-039>042-045-046-050-250000-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
/O.COR.KOUN.BZ.W.0002.091224T1541Z-091225T0400Z/
KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-STEPHENS-GARVIN-MURRAY-PONTOTOC-
JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...STILLWATER...
YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
DUNCAN...PAULS VALLEY...SULPHUR...ADA...WAURIKA...ARDMORE...
MARIETTA
941 AM CST THU DEC 24 2009

...BLIZZARD WARNING IN EFFECT UNTIL 10 PM CST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 10 PM CST THIS EVENING. THIS
REPLACES THE WINTER STORM WARNING WHICH IS NO LONGER IN EFFECT.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD CONDITIONS
AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT SOUTHERN
OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN LAWTON
AND PAULS VALLEY.

* OTHER IMPACTS: A PERIOD OF FREEZING RAIN AND SLEET WILL BE
POSSIBLE ACROSS CENTRAL AND SOUTH CENTRAL OKLAHOMA AS THE
PRECIPITATION TRANSITIONS FROM RAIN TO SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-250000-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
/O.NEW.KOUN.BZ.W.0002.091224T1541Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
941 AM CST THU DEC 24 2009

...BLIZZARD WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 6 PM CST THIS EVENING. THIS
REPLACES THE WINTER STORM WARNING WHICH IS NO LONGER IN EFFECT.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 45 TO 60 MPH. BLIZZARD
CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS
WILL FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ007-008-012-013-032-043-047-048-051-052-250000-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-KAY-GARFIELD-NOBLE-HUGHES-COAL-JOHNSTON-ATOKA-MARSHALL-
BRYAN-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
HOLDENVILLE...COALGATE...TISHOMINGO...ATOKA...MADILL...DURANT
941 AM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 3 TO 6 INCHES IN
NORTH CENTRAL OKLAHOMA AND 4 TO 8 INCHES IN SOUTHEAST OKLAHOMA.

* OTHER IMPACTS: A PERIOD OF FREEZING RAIN AND SLEET WILL BE
POSSIBLE AS PRECIPITATION TRANSITIONS FROM RAIN TO SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY TO
NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ004>006-009>011-014-015-250000-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
941 AM CST THU DEC 24 2009

...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.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING
SNOW AND ACCUMULATION OF UP TO 4 INCHES.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS
WILL FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$
Dec 24 - 950 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
950 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241700-
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-
950 AM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD
ACROSS MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL
OKLAHOMA THIS MORNING IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER
NORTH TEXAS.

A VARIETY OF PRECIPITATION TYPES WERE AFFECTING THE REGION. AT
945 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS TO
LAWTON...TO ANADARKO AND HINTON LINE. AN AREA OF SLEET...SNOW AND
FREEZING RAIN WAS OCCURRING ALONG AND WEST OF INTERSTATE 35...
INCLUDING THE OKLAHOMA CITY METRO AREA. NORTHERLY WINDS CONTINUED
WITH SUSTAINED WINDS OF 25 TO 35 MPH WERE COMMON...WITH NUMEROUS
GUSTS OVER 50 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING
OF SNOW AND REDUCED VISIBILITY.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. STRONG NORTH
WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER 50 MPH
COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING AND
DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY BECOMING
SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL LIKELY
DETERIORATE FURTHER EAST DURING THE MORNING.

$$

TY
Dec 24 - 954 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
954 AM CST THU DEC 24 2009

.UPDATE...
HAVE UPGRADED TO BLIZZARD WARNING FOR MUCH OF SOUTHWEST AND
CENTRAL SECTIONS OF THE CWA. NUMEROUS VISIBILITIES LESS THAN 1/4
MILE ARE BEING REPORTED IN AREAS THAT HAVE TRANSITIONED FROM THE
WINTER MIX TO SNOW... INCLUDING IN THE WICHITA FALLS AREA.
NUMEROUS ACCIDENTS HAVE BEEN REPORTED. ALTHOUGH WE WILL HAVE A
MIX ACROSS CENTRAL AND SOUTH CENTRAL OKLAHOMA INITIALLY...
ESPECIALLY WITH THE WARM NOSE POKING INTO THE AREA ON THE NORTH
SIDE OF THE UPPER LOW... BUT THE TRANSITION TO SNOW WILL BE
COMING. WINDS WILL REMAIN VERY HIGH TODAY AS SURFACE LOW DEEPENS
IN THE OKLA/TEX/ARK BORDER REGION... AND HAVE INCREASED FORECAST
WIND SPEEDS AND GUSTS. WILL BE INVESTIGATING FORECAST SNOW
AMOUNTS NOW... BUT WITH THE ENHANCED REFLECTIVITY AND THE PIVOT
POINT APPEARING TO BE SETTING UP IN THE LAWTON/DUNCAN AREAS... THE
GEOGRAPHY OF THE FORECAST HEAVIEST SNOW STILL LOOKS REASONABLE AT
THIS TIME. ..SPEG.
Dec 24 - 1002 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
1002 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241700-
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-
1002 CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD
ACROSS MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL
OKLAHOMA THIS MORNING IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER
NORTH TEXAS.

A VARIETY OF PRECIPITATION TYPES WERE AFFECTING THE REGION. AT
945 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS TO
LAWTON...TO ANADARKO AND HINTON LINE. AN AREA OF SLEET...SNOW AND
FREEZING RAIN WAS OCCURRING ALONG AND WEST OF INTERSTATE 35...
INCLUDING THE OKLAHOMA CITY METRO AREA. NORTHERLY WINDS CONTINUED
WITH SUSTAINED WINDS OF 25 TO 35 MPH COMMON AND NUMEROUS GUSTS OVER
50 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW
AND REDUCED VISIBILITY.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. STRONG NORTH
WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER 50 MPH
COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING AND
DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY BECOMING
SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL LIKELY
DETERIORATE FURTHER EAST DURING THE MORNING.

$$

TY
Dec 24 - 1045 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1045 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241800-
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-
1045 CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS MORNING. A VARIETY OF WINTER WEATHER WILL AFFECT
MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL
OKLAHOMA THROUGH THIS AFTERNOON IN ADVANCE OF AN UPPER LEVEL STORM
SYSTEM OVER NORTH TEXAS.

AT 1045 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS
TEXAS...TO LAWTON...TO ANADARKO...WESTERN OKLAHOMA CITY... AND ENID
OKLAHOMA. AN AREA OF SLEET...SNOW AND FREEZING RAIN WAS OCCURRING
NEAR AND JUST EAST OF INTERSTATE 35... INCLUDING PARTS OF THE
OKLAHOMA CITY METRO AND LAWTON AREAS. NORTHERLY WINDS CONTINUED WITH
SUSTAINED WINDS OF 25 TO 35 MPH COMMON AND NUMEROUS GUSTS OVER 50
MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW AND
REDUCED VISIBILITY.

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS
NORTHERN TEXAS. SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN
NORTH TEXAS AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD
NORTHEASTWARD INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY.
STRONG NORTH WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER
50 MPH COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING
AND DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY
BECOMING SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL
LIKELY DETERIORATE FURTHER EAST DURING THE MORNING. CONDITIONS ON
AREA ROADWAYS WILL NOT IMPROVE SIGNIFICANTLY THROUGH THE AFTERNOON
HOURS. CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF TRAVEL
IS NECESSARY.

$$

TY
Dec 24 - 1050 AM - Hazardous Weather Outlook Jump To Top 
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1050 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-251200-
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 AM CST THU DEC 24 2009

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

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

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL AFFECT PARTS OF OKLAHOMA TODAY...BUT
SEVERE THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
COLD AND STABLE LOW LEVEL AIR WILL DEEPEN THROUGHOUT THE DAY.
INTENSE LOW PRESSURE ALOFT WILL GENERATE ENOUGH LIFTING TO GENERATE
ISOLATED THUNDERSTORMS IN PARTS OF SOUTHERN AND CENTRAL OKLAHOMA.
THESE STORMS WILL PRODUCE A VARIETY OF PRECIPITATION...RANGING FROM
RAIN TO FREEZING RAIN...SMALL HAIL...SLEET...AND EVEN SNOW. BURSTS
OF HEAVY SLEET AND SNOW WILL ACCOMPANY THE THUNDERSTORMS THIS
AFTERNOON. BY EVENING...INTENSE LIFT WILL MOVE EAST WITH THE UPPER
LEVEL LOW...ENDING THE CHANCE OF THUNDERSTORMS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY DEC 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...90 PERCENT
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
A DANGEROUS WINTER STORM IS UNFOLDING OVER ALL OF OKLAHOMA AND
WESTERN NORTH TEXAS. PLEASE REFER TO THE LATEST VERSION OF THE
WINTER STORM WARNING PRODUCTS FOR MORE INFORMATION.

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

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
COLD ARCTIC AIR WILL SLIDE INTO THE SOUTHERN PLAINS THURSDAY
NIGHT...AND REMAIN IN PLACE THROUGH THE WEEKEND. WITH FRESH SNOW ON
THE GROUND...TEMPERATURES MAY FALL VERY LOW AT NIGHT...INTO THE
SINGLE DIGITS ABOVE ZERO...AND RISE ONLY TO NEAR FREEZING IN THE
DAY. SOME LOCATIONS WILL SEE AN EXTENDED PERIOD OF TIME WITH SUB
FREEZING WEATHER. WIND CHILL TEMPERATURES WILL APPROACH ZERO DEGREES
AT TIMES. IN ADDITION...ANOTHER UPPER LEVEL TROUGH WILL APPROACH THE
REGION NEXT WEEK...BRINGING A CHANCE OF RAIN AND SNOW ON TUESDAY AND
WEDNESDAY.

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

$$
Dec 24 - 1150 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CST THU DEC 24 2009

.AVIATION...
RADAR SHOWS A DEVELOPING BAND OF MOST-INTENSE SNOWFALL FROM NEAR
KSWO TO KPWA TO KLAW AND KSPS. THIS BAND WILL LIKELY TRANSLATE
SLOWLY EAST THIS AFTERNOON... AND SHOULD AFFECT KOKC THROUGHOUT
THE AFTERNOON. MODELS SHOW LIFT DIMINISHING ABRUPTLY BY 25/0000Z
AT ALL BUT KPNC. WINDS WILL BEGIN TO SUBSIDE AFTER SUNSET...
ALLOWING VSBYS IN BLSN TO IMPROVE SOMEWHAT. CONTINUING IMPROVEMENT
WILL OCCUR OVERNIGHT... AND ALL SITES SHOULD BE BACK TO WIDE OPEN
VFR BY SUNRISE TOMORROW.
Dec 24 - 1200 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241900-
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-
1200 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.

AT 1200 PM... MODERATE TO HEAVY SNOW CONTINUED OVER MUCH OF WESTERN
AND PARTS OF CENTRAL OKLAHOMA... AS WELL AS ALL OF WESTERN NORTH
TEXAS. ONE PARTICULARLY HEAVY SNOW BAND WAS LOCATED FROM GUTHRIE...
THROUGH WESTERN OKLAHOMA CITY... TO CHICKASHA... LAWTON... AND
WICHITA FALLS TEXAS. SNOWFALL RATES OF AT LEAST ONE INCH AN HOUR
WILL OCCUR THROUGH MID AFTERNOON. BLIZZARD CONDITIONS WILL EXIST AS
WELL... WITH NORTH WINDS GUSTING OVER 50 MPH REDUCING VISIBILITIES
TO JUST A FEW HUNDRED FEET AT TIMES.

THE BACK EDGE OF THE SNOWFALL WAS JUST BEGINNING TO MOVE ACROSS THE
OKLAHOMA AND TEXAS PANHANDLE BORDER. HOWEVER... STRONG NORTH WINDS
WILL CONTINUE THROUGH THIS EVENING... KEEPING VISIBILITIES WELL
BELOW ONE MILE. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE
HAZARDOUS. CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF
TRAVEL IS NECESSARY.

$$

TY
Dec 24 - 1211 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1211 PM CST THU DEC 24 2009

.UPDATE...
DRY SLOT IS WRAPPING AROUND THE NORTHEASTERN SIDE OF THE UPPER
LEVEL CIRCULATION AND IS MOVING NORTHWEST FROM SOUTHEAST OKLAHOMA
TOWARD CENTRAL OKLAHOMA. THIS WILL INITIALLY LIMIT THE EASTWARD
EXTENTION OF THE HEAVIER SNOW TOTALS SO HAVE REDUCED PRECIP
ACCUMULATIONS IN THE SOUTH CENTRAL AND SOUTHEAST PORTION OF THE
FORECAST AREA. THE HEAVIEST SNOW TOTALS ARE STILL EXPECTED TO BE
IN THE DUNCAN-LAWTON-WICHITA FALLS CORRIDOR WHERE THE PIVOT POINT
OF THE CIRCULATION IS MAINTAINING ENHANCED REFLECTIVITIES. WILL
ALSO HAVE A ENHANCED BAND FROM THE MAX IN SOUTHWEST OKLAHOMA
NORTH-NORTHEAST ACROSS EL RENO AND THE WEST SIDES OF OKLAHOMA
CITY WHERE PERSISTENT ENHANCED REFLECTIVITIES ALSO CONTINUE AND
MEDIA COVERAGE SHOWS BLIZZARD CONDITIONS. THERE WILL BE A
GRADIENT OF SNOWFALL AMOUNTS ACROSS CENTRAL OKLAHOMA THANKS TO THE
DELAYED CHANGEOVER TO SNOW IN THE SOUTHEAST SIDE OF THE OKC METRO
AND THE APPROACHING DRYSLOT. I HAVE ATTEMPTED TO ACCOUNT FOR THIS
IN THE NEW SNOW GRIDS BUT IT WILL BE HARD TO PINPOINT THE EXACT
LOCATION OF THIS GRADIENT. WILL NOT ADJUST THE HEADLINES AT THE
MOMENT... BLIZZARD WARNING STILL LOOKS GOOD FOR MUCH OF THE
COVERED AREAS... ALTHOUGH THE ONSET OF SNOW IN SOUTH CENTRAL
OKLAHOMA MAY NOT OCCUR UNTIL LATER THIS AFTERNOON. ..SPEG.
Dec 24 - 115 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
115 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-242100-
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-
115 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.

AT 1 PM... MODERATE TO HEAVY SNOW CONTINUED OVER MUCH OF WESTERN AND
PARTS OF CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS. ONE PARTICULARLY
HEAVY SNOW BAND WAS LOCATED FROM NEAR BLANCHARD TO DUNCAN OKLAHOMA
TO NEAR WICHITA FALLS TEXAS. OTHER MODERATE TO HEAVY SNOW WAS
LOCATED FROM EAST OF STILLWATER TO EAST OF OKLAHOMA CITY. SOME MIX
WITH SLEET OR FREEZING RAIN MAY ALSO BE OCCURRING. SNOWFALL RATES OF
AT LEAST ONE INCH AN HOUR WILL OCCUR THROUGH MID AFTERNOON WITH
THESE HEAVIER BANDS OF SNOW. BLIZZARD CONDITIONS WILL EXIST AS
WELL... WITH NORTH WINDS GUSTING OVER 50 MPH REDUCING VISIBILITIES
TO JUST A FEW HUNDRED FEET AT TIMES.

THE BACK EDGE OF THE SNOWFALL WAS JUST BEGINNING TO MOVE INTO
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS WITH SNOW DIMINISHING WEST
OF A ALVA TO ELK CITY TO HOLLIS LINE IN OKLAHOMA AND WEST OF A
QUANAH TO MUNDAY LINE IN TEXAS. HOWEVER... STRONG NORTH WINDS WILL
CONTINUE THROUGH THIS EVENING... KEEPING VISIBILITIES WELL BELOW ONE
MILE. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE HAZARDOUS.
CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF TRAVEL IS
NECESSARY.

$$
Dec 24 - 312 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
312 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-242300-
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-
312 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.

AT 3 PM... MODERATE TO HEAVY SNOW CONTINUED OVER PORTIONS OF
OKLAHOMA AND NORTH TEXAS. THE HEAVIEST SNOW EXTENDED FROM SOUTH
CENTRAL TO CENTRAL OKLAHOMA... ESPECIALLY FROM DUNCAN AND LONE GROVE
TO PAULS VALLEY... NORMAN... SHAWNEE... CHANDLER AND STROUD. SOME
MIX WITH SLEET OR FREEZING RAIN MAY ALSO BE OCCURRING IN SOME
LOCATIONS. SNOWFALL RATES OF AT LEAST ONE INCH AN HOUR WILL OCCUR
THROUGH MID AFTERNOON WITH THESE HEAVIER BANDS OF SNOW. BLIZZARD
CONDITIONS WILL EXIST AS WELL... WITH NORTH WINDS GUSTING OVER 50
MPH REDUCING VISIBILITIES TO JUST A FEW HUNDRED FEET AT TIMES.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM CHEROKEE TO FREDERICK OKLAHOMA TO SEYMOUR TEXAS. HOWEVER...
STRONG NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... KEEPING
VISIBILITIES WELL BELOW ONE MILE. CONDITIONS ON AREA ROADWAYS WILL
CONTINUE TO BE HAZARDOUS. CAUTION IS ADVISED THIS AFTERNOON AND THIS
EVENING IF TRAVEL IS NECESSARY.

$$

26
Dec 24 - 325 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
325 PM CST THU DEC 24 2009

.DISCUSSION...
THE BLIZZARD-GENERATING STORM SYSTEM WHOSE SURFACE CENTER IS NOW
OVER ARKANSAS WILL CONTINUE TO MOVE NORTHEAST OVERNIGHT...
GRADUALLY RELEASING ITS GRIP ON OKLAHOMA AND NORTH TEXAS. THE
ENHANCED SNOW BAND THAT HAS BROUGHT THE HEAVIEST SNOW ALONG AN
AXIS FROM STILLWATER TO OK CITY TO DUNCAN AND WICHITA FALLS WILL
GRADUALLY WEAKEN AND SHIFT EAST. IT APPEARS THAT IT WILL STILL BE
CAPABLE OF PUTTING DOWN SEVERAL MORE INCHES OF SNOW OVER OUR
EASTERN COUNTIES... ROUGHLY FROM I-35 ON EAST... WITH LESSER
AMOUNTS OVER OUR SOUTHEAST COUNTIES.

GIVEN THE CURRENT PROGRESS OF THE STORM SYSTEM... AND THE
CONTINUING STRONG PRESSURE GRADIENT BEHIND IT... HAVE OPTED TO
EXTEND THE BLIZZARD WARNING/WINTER STORM WARNING A FEW MORE HOURS
ALONG OUR EASTERN PERIPHERY.

WIND CHILLS REACH BORDERLINE LEVELS FOR AN ADVISORY LATE TONIGHT...
BUT GIVEN THE BIGGER-FISH-TO-FRY SITUATION... WILL NOT WORRY TOO
MUCH ABOUT THAT YET.

TEMPERATURES WILL BE HELD DOWN QUITE DRAMATICALLY BY THE NEW SNOW
COVER... AND THE NAM12 NUMBERS LOOK MORE REASONABLE THAN THOSE
FROM THE VARIOUS MOS GUIDANCE SOURCES FOR THE NEXT DAY OR TWO.
HAVE ONLY MADE CHANGES TO THE FIRST COUPLE OF PERIODS...
HOWEVER... DUE TO THE OVERALL WORKLOAD WITH THIS STORM. LATER
SHIFTS CAN FINE-TUNE THE NUMBERS AS NEEDED.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 15 28 14 31 / 70 0 0 10
HOBART OK 10 29 12 35 / 10 10 0 0
WICHITA FALLS TX 12 31 14 39 / 10 0 0 0
GAGE OK 13 28 16 35 / 10 0 0 10
PONCA CITY OK 15 24 16 28 / 80 10 10 10
DURANT OK 22 33 19 36 / 80 0 10 0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...BLIZZARD WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ018-019-024-
025-027>029-039>042-045-046-050.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR
OKZ004>006-009>011-014-015.

BLIZZARD WARNING UNTIL 6 PM CST THIS EVENING FOR OKZ016-017-
021>023-033>038-044.

WINTER STORM WARNING UNTIL 2 AM CST FRIDAY FOR OKZ008-013-032.

WINTER STORM WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ007-012-
043-047-048-051-052.

BLIZZARD WARNING UNTIL 2 AM CST FRIDAY FOR OKZ020-026-030-031.

TX...BLIZZARD WARNING UNTIL 6 PM CST THIS EVENING FOR TXZ083>090.

&&

$$

26/23
Dec 24 - 336 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
336 PM CST THU DEC 24 2009

OKZ020-026-030-031-250545-
/O.EXT.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING NOW IN EFFECT UNTIL 2 AM CST FRIDAY...

THE BLIZZARD WARNING IS NOW IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8 INCHES.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ008-013-032-250545-
/O.EXT.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
336 PM CST THU DEC 24 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 2 AM CST FRIDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ018-019-024-025-027>029-039>042-045-046-050-250400-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8
INCHES...BUT A FEW LOCATIONS MAY RECEIVE AS MUCH AS 8 TO 11
INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-250000-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING.

* TIMING: REST OF THIS AFTERNOON

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 45 TO 60 MPH. BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8
INCHES...BUT A FEW LOCATIONS MAY RECEIVE UP TO 8 TO 11 INCHES.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS
WILL FALL TO NEAR ZERO THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ007-012-043-047-048-051-052-250400-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
336 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES
IN NORTH CENTRAL OKLAHOMA AND 2 TO 4 INCHES IN SOUTHEAST
OKLAHOMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ004>006-009>011-014-015-250000-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
336 PM CST THU DEC 24 2009

...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.

* TIMING: THE REST OF THIS AFTERNOON

* MAIN IMPACT: STRONG WINDS WILL CAUSE PATCHES OF DRIFTING SNOW...
AND MAY RESULT IN SLICK SPOTS ON ROADS.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
LOW AS ARCTIC AIR BUILDS INTO THE REGION THIS AFTERNOON. WIND
CHILLS WILL AVERAGE AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$

CMS
Dec 24 - 507 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
507 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-250100-
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-
507 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO AFFECT OKLAHOMA AND WESTERN NORTH
TEXAS THROUGH EARLY THIS EVENING. HEAVY SNOW WILL CONTINUE TO AFFECT
PORTIONS OF CENTRAL AND SOUTH CENTRAL OKLAHOMA.

AT 5 PM... MODERATE TO HEAVY SNOW CONTINUED OVER THE CENTRAL THIRD
OF OKLAHOMA. THE HEAVIEST SNOW EXTENDED FROM SOUTH CENTRAL TO
CENTRAL OKLAHOMA... ESPECIALLY FROM ARDMORE AND PAULS VALLEY... TO
NORMAN... SHAWNEE... OKLAHOMA CITY METRO... GUTHRIE... CHANDLER AND
STROUD. SNOWFALL RATES OF ONE TO TWO INCHES PER HOUR WILL OCCUR
THROUGH EARLY EVENING WITH THESE HEAVIER BANDS OF SNOW. BLIZZARD
CONDITIONS WILL EXIST AS WELL... WITH NORTH WINDS GUSTING OVER 50
MPH REDUCING VISIBILITIES TO JUST A FEW HUNDRED FEET OR LESS AT
TIMES. THE BLOWING SNOW WILL ALSO CONTINUE TO CAUSE DRIFTS OF
SEVERAL FEET ACROSS THE AREA WHICH WILL CONTINUE HAZARDOUS DRIVING
CONDITIONS AND CAUSE SOME ROADS TO DRIFT SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM CHEROKEE TO FREDERICK OKLAHOMA TO SEYMOUR TEXAS. HOWEVER...
STRONG NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... CAUSING
BLOWING AND DRIFTING OF SNOW IN THIS AREA WHICH WILL CONTINUE TO
REDUCE VISIBILITIES. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE
HAZARDOUS. CAUTION IS ADVISED THIS EVENING IF TRAVEL IS NECESSARY.

$$

MAXWELL
Dec 24 - 617 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
617 PM CST THU DEC 24 2009

OKZ016-017-021>023-033>038-044-TXZ083>090-250130-
/O.EXP.KOUN.BZ.W.0002.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING WILL EXPIRE AT 6 PM CST THIS EVENING...

THE BLIZZARD WARNING EXPIRED AT 6 PM CST THIS EVENING.


* IMPACTS: THE SNOW HAS EITHER ENDED OVER MUCH OF WESTERN OKLAHOMA
AND WESTERN NORTH TEXAS OR WILL BE ENDING SHORTLY EARLY THIS
EVENING.... HOWEVER ROADWAYS IN MANY AREAS WILL REMAINS SLICK
AND HAZARDOUS.

* WINDS/VISIBILITY: WINDS WILL CONTINUE TO GUST OVER 40 MPH THIS
EVENING RESULTING IN SINGLE DIGIT WIND CHILLS. ALTHOUGH
VISIBILITIES HAVE IMPROVED IN MOST AREAS... A FEW AREAS MAY STILL
EXPERIENCE REDUCED VISIBILITIES NEAR OPEN FIELDS.

* SNOW ACCUMULATIONS: NO SIGNIFICANT ADDITIONAL SNOWFALL IS
EXPECTED.



$$

OKZ004>006-009>011-014-015-250130-
/O.EXP.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
617 PM CST THU DEC 24 2009

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

THE WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING.

* IMPACTS: THE SNOW HAS ENDED OVER MUCH OF NORTHWEST OKLAHOMA...
HOWEVER ROADWAYS IN MANY AREAS WILL REMAINS SLICK. AND
HAZARDOUS.

* OTHER IMPACTS: WINDS WILL CONTINUE TO GUST OVER 40 MPH THIS
EVENING RESULTING IN SINGLE DIGIT WIND CHILLS.


$$

OKZ018-019-024-025-027>029-039>042-045-046-050-250400-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: THROUGH THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 35 TO 45 MPH. BLIZZARD
CONDITIONS AT TIMES WITH CONSIDERABLE BLOWING AND DRIFTING OF
SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND HAZARDOUS
WITH SOME ROADS CLOSED. TRAVEL ALONG THE INTERSTATES IN CENTRAL
OKLAHOMA WILL BE AT A STAND STILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES WILL CONTINUE. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ020-026-030-031-250800-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: THROUGH LATE TONIGHT.

* MAIN IMPACT: MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW
VISIBILITY AND STRONG WINDS WITH WIND GUSTS OF 35 TO 45 MPH.
BLIZZARD CONDITIONS AT TIMES WITH CONSIDERABLE BLOWING AND
DRIFTING OF SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND
HAZARDOUS WITH SOME ROADS CLOSED. TOTAL SNOWFALL WILL AVERAGE 4
TO 8 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ008-013-032-250800-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
617 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6
INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ007-012-043-047-048-051-052-250400-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
617 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING.

* TIMING: THROUGH THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES
IN NORTH CENTRAL OKLAHOMA AND 2 TO 4 INCHES IN SOUTHEAST
OKLAHOMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

CJS
Dec 24 - 651 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
651 PM CST THU DEC 24 2009

.AVIATION...
LIFR CONDITIONS IN SNOW AND BLOWING SNOW AT KPNC... KPWA... AND
KOUN WILL GRADUALLY IMPROVE THIS EVENING AS WINDS SLOWLY SUBSIDE
AND SNOWFALL SHIFTS EAST. A STRONG UPPER LEVEL STORM SYSTEM
LOCATED OVER NORTHEAST TEXAS WILL LIFT NORTHEAST ACROSS ARKANSAS
OVERNIGHT BRINGING AN END TO THE WINTER PRECIPITATION LATER TONIGHT.
Dec 24 - 654 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
654 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-250300-
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-
654 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO AFFECT OKLAHOMA EARLY THIS
EVENING. SNOW GRADUALLY ENDING FROM THE WEST THIS EVENING.

AT 645 PM... LIGHT TO MODERATE SNOW CONTINUED OVER THE CENTRAL THIRD
OF OKLAHOMA. SNOWFALL RATES OF ONE INCH PER HOUR OR LESS WILL
CONTINUE EARLY THIS EVENING. BLIZZARD CONDITIONS WILL CONTINUE AS
WELL... WITH NORTH WINDS GUSTING OVER 40 MPH REDUCING VISIBILITIES
TO JUST A FEW HUNDRED FEET AT TIMES. THE BLOWING SNOW WILL ALSO
CONTINUE TO CAUSE DRIFTS OF SEVERAL FEET ACROSS THE AREA WHICH WILL
CAUSE SOME ROADS TO DRIFT SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM CHEROKEE TO EL RENO AND WAURIKA OKLAHOMA. HOWEVER... THE STRONG
NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... CAUSING BLOWING
AND DRIFTING OF SNOW AND CONTINUE TO REDUCE VISIBILITIES FOR A FEW
HOURS AFTER THE SNOW ENDS. CONDITIONS ON AREA ROADWAYS WILL LIKELY
REMAIN HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS
NECESSARY.

$$

MAXWELL
Dec 24 - 851 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
851 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-250500-
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-
851 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST THIS EVENING...
WITH THE SNOW GRADUALLY ENDING FROM WEST TO EAST.

AT 845 PM... LIGHT SNOW CONTINUED OVER THE CENTRAL THIRD OF
OKLAHOMA. NORTH WINDS AT 15 TO 30 MPH WITH GUSTS OVER 40 MPH WILL
CONTINUE THROUGH THIS EVENING. THE WINDS MAY CONTINUE TO BLOW THE
SNOW FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF
SEVERAL FEET AND REDUCING VISIBILITIES. SOME ROADS MAY BE DRIFTED
SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM MEDFORD TO WESTERN SIDE OF THE OKLAHOMA CITY METRO... TO
ARDMORE OKLAHOMA. CONDITIONS ON AREA ROADWAYS WILL LIKELY REMAIN
HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.

$$

MAXWELL
Dec 24 - 950 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
950 PM CST THU DEC 24 2009

OKZ018-019-024-025-027>029-039>042-045-046-050-250500-
/O.EXP.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
950 PM CST THU DEC 24 2009

...BLIZZARD WARNING WILL EXPIRE AT 10 PM CST THIS EVENING...

THE BLIZZARD WARNING WILL EXPIRE AT 10 PM CST THIS EVENING.

* IMPACTS: SNOW HAS GENERALLY ENDED ACROSS THE AREA ALTHOUGH LOCAL
AREAS OF BLOWING SNOW MAY CONTINUE DURING THE EVENING. ROADS
WILL REMAIN SLICK AND HAZARDOUS WITH SOME ROADWAYS CLOSED.

* WINDS/VISIBILITY: NORTH TO NORTHWEST WINDS GUSTING TO 35 MPH
WILL CONTINUE TO RESULT IN WIND CHILLS IN THE SINGLE DIGITS
OVERNIGHT. VISIBILITIES HAVE GENERALLY IMPROVED ALTHOUGH SOME
AREAS... ESPECIALLY NEAR OPEN FIELDS... COULD EXPERIENCE LOWERED
VISIBILITIES IN BLOWING SNOW.


$$

OKZ007-012-043-047-048-051-052-250500-
/O.EXP.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
950 PM CST THU DEC 24 2009

...WINTER STORM WARNING WILL EXPIRE AT 10 PM CST THIS EVENING...

THE WINTER STORM WARNING WILL EXPIRE AT 10 PM CST THIS EVENING.

* IMPACTS: SNOW HAS GENERALLY ENDED ACROSS THE AREA ALTHOUGH LOCAL
AREAS OF BLOWING SNOW MAY CONTINUE DURING THE EVENING. ROADS
WILL REMAIN SLICK AND HAZARDOUS IN MANY AREAS.

* WINDS/VISIBILITY: NORTH TO NORTHWEST WINDS GUSTING TO 35 MPH
WILL CONTINUE TO RESULT IN WIND CHILLS IN THE SINGLE DIGITS
OVERNIGHT. VISIBILITIES HAVE GENERALLY IMPROVED ALTHOUGH SOME
AREAS... ESPECIALLY NEAR OPEN FIELDS... COULD EXPERIENCE LOWERED
VISIBILITIES IN BLOWING SNOW.

$$

OKZ020-026-030-031-250800-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
950 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: THROUGH LATE TONIGHT.

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
STRONG WINDS WITH WIND GUSTS OF 35 MPH. CONSIDERABLE BLOWING AND
DRIFTING OF SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND
HAZARDOUS. SNOW TAPERING OFF BY LATE EVENING BUT STRONG WINDS
CONTINUING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES
ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL
EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST...HAVE A WINTER
SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR
VEHICLE.

&&

$$

OKZ008-013-032-250800-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
950 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY.

* TIMING: THROUGH EARLY FRIDAY MORNING

* MAIN IMPACT: MODERATE SNOW AND STRONG WINDS RESULTING IN LOW
VISIBILITIES. WIND CHILLS IN THE SINGLE DIGITS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
AT TIMES... MAKING TRAVEL HAZARDOUS.

&&

$$

CJS
Dec 24 - 1037 PM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1037 PM CST THU DEC 24 2009

.DISCUSSION...
SNOW EVENT WINDING DOWN FAIRLY QUICKLY LATE THIS EVENING WITH
PRECIPITATION CONFINED TO THE FAR EASTERN PART OF THE CWA. WILL
LIKELY BE ABLE TO CANCEL BLIZZARD WARNING FOR THESE AREAS WITHIN
THE NEXT COUPLE OF HOURS. WINDS WILL CONTINUE TO GUST 30 TO 35
MPH FOR MUCH OF THE NIGHT... BUT DOWN CONSIDERABLY FROM EARLIER
TODAY. SINGLE DIGIT WIND CHILLS WILL ALSO PERSIST OVERNIGHT.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 31 15 28 14 / 100 70 0 0
HOBART OK 30 12 29 12 / 100 10 10 0
WICHITA FALLS TX 34 12 31 14 / 100 10 0 0
GAGE OK 25 9 28 16 / 70 10 0 0
PONCA CITY OK 31 16 24 16 / 100 80 10 10
DURANT OK 45 22 33 19 / 100 80 0 10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 2 AM CST FRIDAY FOR OKZ008-013-032.

BLIZZARD WARNING UNTIL 2 AM CST FRIDAY FOR OKZ020-026-030-031.

TX...NONE.
&&

$$

25/26
Dec 24 - 1050 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1050 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-250600-
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-
1050 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT...
WITH THE SNOW ENDING FROM WEST TO EAST.

AT 1045 PM... LIGHT SNOW CONTINUED OVER PORTIONS OF NORTH CENTRAL
AND CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30
MPH WILL CONTINUE OVERNIGHT. THE WINDS MAY CONTINUE TO BLOW THE SNOW
FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF
SEVERAL FEET AND REDUCING VISIBILITIES. SOME ROADS MAY BE DRIFTED
SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM NEAR BLACKWELL TO SHAWNEE... TO ATOKA OKLAHOMA. CONDITIONS ON
AREA ROADWAYS WILL LIKELY REMAIN HAZARDOUS OVERNIGHT. CAUTION IS
ADVISED IF TRAVEL IS NECESSARY.

$$

MAXWELL
Dec 24 - 1148 PM - Winter Weather Message Jump To Top 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1148 PM CST THU DEC 24 2009

OKZ020-026-030-031-250700-
/O.CAN.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
1148 PM CST THU DEC 24 2009

...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE BLIZZARD
WARNING.

MOST OF THE SNOW HAS ENDED ACROSS THE AREA. HOWEVER WINDS GUSTING
OVER 30 MPH MAY OCCASIONALLY LOWER VISIBILITIES IN A FEW AREAS
WHILE ALSO RESULTING IN SINGLE DIGIT WIND CHILLS. ROADS ACROSS THE
AREA WILL REMAIN SLICK AND HAZARDOUS OVERNIGHT.

$$

OKZ008-013-032-250700-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
1148 PM CST THU DEC 24 2009

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE WINTER
STORM WARNING.

MOST OF THE SNOW HAS ENDED ACROSS THE AREA. HOWEVER WINDS GUSTING
OVER 30 MPH MAY OCCASIONALLY LOWER VISIBILITIES IN A FEW AREAS
WHILE ALSO RESULTING IN SINGLE DIGIT WIND CHILLS. ROADS ACROSS THE
AREA WILL REMAIN SLICK AND HAZARDOUS OVERNIGHT.

$$

CJS
Dec 24 - 1151 PM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1151 PM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-250700-
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-
1151 PM CST THU DEC 24 2009

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT...
WITH THE SNOW ENDING FROM WEST TO EAST.

AT 1145 PM... LIGHT SNOW CONTINUED OVER PORTIONS OF NORTH CENTRAL
AND CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30
MPH WILL CONTINUE OVERNIGHT. THE WINDS MAY CONTINUE TO BLOW THE SNOW
FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF
SEVERAL FEET. SOME ROADS MAY BE DRIFTED SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS
FROM NEAR BLACKWELL TO STILLWATER... TO STROUD AND HOLDENVILLE
OKLAHOMA. CONDITIONS ON AREA ROADWAYS WILL LIKELY REMAIN HAZARDOUS
OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE LEADING TO VERY
COLD WIND CHILLS. WIND CHILL VALUES WILL RANGE FROM NEAR ZERO TO
AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN NORTH TEXAS
THROUGH 2 AM.
$$

MAXWELL
Dec 25 - 1207 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1207 AM CST FRI DEC 25 2009

.UPDATE...
SNOW HAS JUST ABOUT ENDED OVER ALL OF THE CWA AND CLOUDS CONTINUE
TO GENERALLY CLEAR FROM THE WEST. WINDS HAVE DIMINISHED ALTHOUGH THEY
WILL STILL GUST OVER 30 MPH OVERNIGHT WHICH COULD STILL RESULT IN
A FEW AREAS OF BLOWING SNOW. HAVE CANCELLED THE BLIZZARD WARNING
FOR THE REMAINDER OF THE NIGHT. WIND CHILLS WILL REMAIN IN THE
SINGLE DIGITS OVERNIGHT.
Dec 25 - 1227 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1227 AM CST FRI DEC 25 2009

.AVIATION...
SNOW HAS MOVED OUT OF ALL BUT KPNC TERMINALS EARLY THIS MORNING
WHILE SKIES WILL CONTINUE TO CLEAR FROM THE WEST. A FEW AREAS OF
LIGHT BLOWING SNOW MAY PERSIST FOR A COUPLE MORE HOURS... OTRW VFR
CONDITIONS WILL PREVAIL. NORTH WINDS GUSTING TO NEAR 30 KTS WILL
DIMINISH SLOWLY THROUGH FRIDAY.
Dec 25 - 1258 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1258 AM CST FRI DEC 25 2009

OKZ004>048-050>052-TXZ083>090-250800-
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-
1258 AM CST FRI DEC 25 2009

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT...
WITH THE SNOW ENDING FROM WEST TO EAST.

AT 1 AM... LIGHT SNOW CONTINUED OVER PORTIONS OF FAR NORTHERN
OKLAHOMA...EAST OF A LINE FROM YALE NORTHWARD TO PONCA CITY AND
NEWKIRK. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30 MPH WILL
CONTINUE OVERNIGHT. THE WINDS WILL CONTINUE TO BLOW THE SNOW AFTER
SNOWFALL ENDS LEADING TO SNOW DRIFTS OF SEVERAL FEET. SOME ROADS MAY
BE DRIFTED SHUT. CONDITIONS ON AREA ROADWAYS WILL REMAIN HAZARDOUS
OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE LEADING TO VERY
COLD WIND CHILLS. WIND CHILL VALUES WILL RANGE FROM NEAR ZERO TO
AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN NORTH TEXAS
THROUGH 2 AM.

$$

MAXWELL/TAYLOR
Dec 25 - 211 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
211 AM CST FRI DEC 25 2009

OKZ004>048-050>052-TXZ083>090-250900-
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-
211 AM CST FRI DEC 25 2009

.REGIONAL WEATHER DISCUSSION...

AT 2 AM... LIGHT SNOW WAS TAPERING OFF IN FAR NORTHERN OKLAHOMA...
AND HAD ENDED ELSEWHERE ACROSS WESTERN NORTH TEXAS... WESTERN AND
CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 20 MPH WITH GUSTS OVER 25 MPH
WILL CONTINUE OVERNIGHT...MAINLY NEAR AND NORTH OF INTERSTATE 40.
WIND GUSTS FROM 15 TO 20 MPH CAN BE EXPECTED ELSEWHERE. THE WINDS
WILL CONTINUE TO BLOW THE SNOW LEADING TO SNOW DRIFTS OF SEVERAL
FEET. SOME ROADS MAY BE DRIFTED SHUT. CONDITIONS ON AREA ROADWAYS
WILL REMAIN HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS
NECESSARY.

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE TO PRODUCE VERY
COLD WIND CHILL TEMPERATURES. WIND CHILL VALUES WILL RANGE FROM NEAR
ZERO TO AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN
NORTH TEXAS THROUGH 3 AM.

$$

MAXWELL/TAYLOR
Dec 25 - 311 AM - Short Term Forecast Jump To Top 
SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
311 AM CST FRI DEC 25 2009

OKZ004>048-050>052-TXZ083>090-251000-
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-
311 AM CST FRI DEC 25 2009

.REGIONAL WEATHER DISCUSSION...

AT 3 AM...THE CENTER OF THE SURFACE LOW ASSOCIATED WITH THE STORM
SYSTEM WHICH BROUGHT BLIZZARD CONDITIONS TO OKLAHOMA AND NORTH TEXAS
YESTERDAY WAS LOCATED IN NORTHERN MISSOURI...AND WAS MOVING
NORTHWARD. AS THIS LOW MOVES AWAY...WIND SPEEDS WILL GRADUALLY
DECREASE THROUGH THE REST OF THE EARLY MORNING HOURS. THIS DECREASE
IS RELATIVE...AS GUSTS BETWEEN 25 AND 30 MPH ARE EXPECTED TO
CONTINUE THROUGH SUNRISE ACROSS NORTHERN OKLAHOMA.

VISIBILITY IS IMPROVING WITH THE DECREASE IN WIND SPEED. HOWEVER...
MUCH OF THE SNOW ON THE GROUND IS NOT PACKED WELL...AND ANY WIND AT
ALL WILL TEND TO CAUSE DRIFTING. WITH THE WIND DIRECTION HAVING
BECOME MORE WESTERLY...THE CONCERN WILL PRIMARILY BE WITH NORTH TO
SOUTH ROADWAYS...ALTHOUGH DRIFTING IS POSSIBLE ANYWHERE. ALL
ROADWAYS ARE SLICK AND HAZARDOUS FROM WESTERN NORTH TEXAS THROUGH
SOUTHWEST AND CENTRAL OKLAHOMA...PLEASE USE CAUTION IF TRAVEL IS
NECESSARY.

$$

TAYLOR
Dec 25 - 327 AM - Area Forecast Discussion Jump To Top 
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
327 AM CST FRI DEC 25 2009

.DISCUSSION...
A MAJOR WINTER STORM CONTINUES EXIT THE AREA EARLY THIS MORNING
WITH GENERALLY CLEAR SKIES NOW OVER THE AREA. THE EXCESSIVE WINDS
HAVE DECREASED ALTHOUGH THEY WILL CONTINUE TO GUST NEAR 25 MPH
TODAY WHICH WILL RESULT IN WIND CHILLS IN THE SINGLE DIGITS OVER
MOST OF THE REGION THIS MORNING. TEMPERATURES WILL REMAIN BELOW
FREEZING OVER A LARGE PART OF THE AREA THIS AFTERNOON AND WILL
LIKELY CONTINUE TO BE COLDER THAN GUIDANCE FOR AT LEAST THE NEXT
COUPLE OF DAYS. ANOTHER LOW DROPPING SOUTHEAST THROUGH THE PLAINS
WILL HELP TO REINFORCE THE SURFACE RIDGE OVER THE AREA BY LATE
FRIDAY. NOT OUT OF THE QUESTION THIS SYSTEM COULD GENERATE SOME
FLURRIES BUT FOR NOW WILL ONLY INCREASE CLOUDS SOMEWHAT. OTHERWISE
DRY WEATHER IS EXPECTED THROUGH MONDAY WITH RELATIVELY COLD
TEMPERATURES CONTINUING. BY TUESDAY... THE CHANCE FOR MIXED
PRECIPITATION WILL INCREASE AS A SYSTEM APPROACHES FROM THE WEST
WHILE AREAS OF LOW-LEVEL SUBFREEZING TEMPERATURES REMAIN OVER THE
AREA. THE SCATTERED PRECIPITATION WILL LIKELY LINGER INTO PART OF
WEDNESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK 28 14 31 19 / 0 10 10 10
HOBART OK 29 14 36 20 / 0 0 0 0
WICHITA FALLS TX 31 17 38 23 / 0 0 0 0
GAGE OK 29 16 35 13 / 0 0 0 0
PONCA CITY OK 25 14 28 15 / 0 10 10 10
DURANT OK 33 21 36 23 / 0 0 10 0

&&

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

$$

03/32

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