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Warning Decision Updates Associated with the
May 10, 2010 Tornado Outbreak in Oklahoma

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FPUS74 KOUN 101608
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1108 AM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-101700-
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-
1108 AM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT 11 AM...VISIBLE SATELLITE LOOPS SHOWED LOW CLOUDS ERODING FROM
SOUTHWEST TO NORTHEAST ACROSS WESTERN NORTH TEXAS AND OKLAHOMA. THE
LOW CLOUD COVER GENERALLY EXISTED TO THE NORTH OF A WARM FRONT THAT
WAS LOCATED ALONG A LINE FROM ELK CITY...TO HOBART...TO LAWTON...TO
WAURIKA. SOUTH OF THE WARM FRONT LOW LEVEL MOISTURE WAS SURGING
NORTH AND DEWPOINTS HAVE INCREASED INTO THE MID 60S THROUGH THE
MORNING HOURS. TEMPERATURES IN THIS AREA HAVE ALSO RISEN QUICKLY
INTO THE MID TO UPPER 70S UNDER MOSTLY SUNNY SKIES.

A DRYLINE IS ALSO BEGINNING TO SHARPEN FROM SOUTHWEST KANSAS INTO
THE TEXAS PANHANDLE. THE DRYLINE EXTENDED FROM JUST WEST OF LIBERAL
KANSAS...TO JUST EAST OF AMARILLO TEXAS...TO NEAR PLAINVIEW TEXAS.
AS DAYTIME HEATING CONTINUES...THIS DRYLINE IS EXPECTED TO BEGIN TO
PUSH EAST IN THE EARLY AFTERNOON.

SCATTERED STRONG AND SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP
QUICKLY THIS AFTERNOON... MAINLY AFFECTING CENTRAL AND EASTERN
OKLAHOMA... AND POSSIBLY NORTH TEXAS.

$$

CMS
 
FPUS74 KOUN 101657
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1157 AM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-101800-
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-
1157 AM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT NOON...VISIBLE SATELLITE LOOPS SHOWED LOW CLOUDS ERODING FROM
SOUTHWEST TO NORTHEAST ACROSS OKLAHOMA. THE LOW CLOUD COVER
GENERALLY EXISTED TO THE NORTH OF A WARM FRONT THAT WAS LOCATED
ALONG A LINE FROM SHATTUCK...TO CHEYENNE...TO CLINTON...TO
ANADARKO...TO MARIETTA. SOUTH OF THE WARM FRONT LOW LEVEL MOISTURE
WAS SURGING NORTH AND DEWPOINTS HAVE RAPIDLY INCREASED INTO THE MID
TO UPPER 60S ACROSS THE WARM SECTOR. TEMPERATURES IN THIS AREA HAVE
ALSO RISEN QUICKLY FROM THE MID 70S IN SOUTHWEST OKLAHOMA...TO THE
LOW 80S IN WESTERN NORTH TEXAS UNDER MOSTLY SUNNY SKIES. THIS IS
LEADING TO AN INCREASINGLY UNSTABLE AIR MASS.

A DRYLINE IS CONTINUING TO SHARPEN FROM SOUTHWEST KANSAS INTO THE
TEXAS PANHANDLE. THE DRYLINE EXTENDED FROM NEAR LIBERAL KANSAS...TO
NEAR PAMPA TEXAS...TO NEAR LUBBOCK TEXAS. THE DRYLINE HAS BEGUN A
SLOW PUSH TO THE EAST...BUT HAS NOT MOVED MUCH IN THE PAST HOUR.

SCATTERED STRONG AND SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP
QUICKLY THIS AFTERNOON... MAINLY AFFECTING CENTRAL AND EASTERN
OKLAHOMA. ISOLATED SEVERE STORMS WILL ALSO BE POSSIBLE ACROSS
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS.

$$

CMS
 
FPUS74 KOUN 101800
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
100 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-101900-
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 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT 1 PM...LOW CLOUDS HAD ERODED ACROSS WESTERN OKLAHOMA AND WESTERN
NORTH TEXAS...GIVING WAY TO MOSTLY SUNNY SKIES. MOST OF THE CLOUD
COVER WAS LOCATED TO THE NORTHEAST OF AN ADVANCING WARM FRONT OVER
CENTRAL OKLAHOMA. THESE CLOUDS SHOULD CONTINUE TO BREAK UP OVER THE
NEXT SEVERAL HOURS. SOUTH AND WEST OF THE WARM FRONT...SURFACE DEW
POINTS WERE INCREASING INTO THE MID TO UPPER 60S. WHEN COMBINED
WITH ABUNDANT SUNSHINE...THE ATMOSPHERE ACROSS WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS WAS RAPIDLY BECOMING UNSTABLE. THE AXIS OF
GREATEST INSTABILITY STRETCHED FROM NEAR WICHITA FALLS TO NEAR
WATONGA. A WARM LAYER OF AIR ALOFT IS PREVENTING THUNDERSTORM
DEVELOPMENT...BUT THIS CAPPING INVERSION WILL CONTINUE TO WEAKEN
OVER THE NEXT SEVERAL HOURS.

A DRYLINE IS CONTINUING TO SHARPEN FROM SOUTHWEST KANSAS INTO THE
TEXAS PANHANDLE. THE DRYLINE EXTENDED FROM NEAR GARDEN CITY
KANSAS...TO BEAVER OKLAHOMA...TO CANADIAN TEXAS...TO LAMESA TEXAS.
THE DRYLINE CONTINUES TO PUSH EAST...AND MAY APPROACH THE OKLAHOMA
BORDER WITH THE TEXAS PANHANDLE BY 230 PM.
SCATTERED STRONG AND SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP
QUICKLY THIS AFTERNOON... MAINLY AFFECTING CENTRAL AND EASTERN
OKLAHOMA. ISOLATED SEVERE STORMS WILL ALSO BE POSSIBLE ACROSS
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS.

$$

CMS
 
FPUS74 KOUN 101854
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
154 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102000-
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-
154 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT 2 PM...LOW CLOUDS HAD EITHER COMPLETELY OR PARTIALLY ERODED
ACROSS MOST OF WESTERN AND CENTRAL OKLAHOMA...AND WESTERN NORTH
TEXAS. ACROSS THAT AREA...SURFACE DEW POINTS CONTINUED TO INCREASE
INTO THE MID TO UPPER 60S. A POOL OF GREATER SURFACE DEWPOINTS
BETWEEN 67 AND 70 DEGREES HAS DEVELOPED JUST WEST OF INTERSTATE 35
GENERALLY BETWEEN EL RENO AND WAURIKA...AND THIS IS THE PART OF
OKLAHOMA THAT IS QUICKLY BECOMING EXTREMELY UNSTABLE AS MORE SOLAR
HEATING OCCURS.

THE SURFACE DRYLINE HAS REACHED THE OKLAHOMA BORDER WITH THE TEXAS
PANHANDLE...AND WILL CONTINUE PUSHING EAST INTO WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS IN THE NEXT SEVERAL HOURS. TOWERING CUMULUS
CLOUDS HAVE STARTED TO DEVELOP ALONG THE LENGTH OF THE DRYLINE AS
FAR SOUTH AS CHILDRESS TEXAS. THE DRYLINE HAS ACCELERATED FORWARD
SLIGHTLY PRODUCING A BULGE IN THE VICINITY OF INTERSTATE 40 NEAR
ERICK AND CHEYENNE. THIS BULGE MAY BE A FAVORED LOCATION FOR INITIAL
THUNDERSTORM DEVELOPMENT IN THE NEXT HOUR.

$$

AL/CMS
 
FPUS74 KOUN 101945
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
245 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102030-
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-
245 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT 240 PM...THUNDERSTORMS HAD STARTED TO RAPIDLY DEVELOP ALONG
AND AHEAD OF A DRYLINE THAT EXTENDED FROM BUFFALO...TO ELK CITY...TO
ALTUS...TO BENJAMIN TEXAS. THE STORM DEVELOPMENT SO FAR HAS BEEN
CONFINED NORTH OF INTERSTATE 40 WHERE FORCING IS STRONGER.

THE DRYLINE IS EXPECTED TO BECOME INCREASINGLY ACTIVE OVER THE NEXT
TWO TO THREE HOURS ACROSS ALL OF WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS. AS STORMS DEVELOP...WIND SHEAR AND INSTABILITY LEVELS WILL
ALLOW THEM TO RAPIDLY BECOME SEVERE AND TAKE ON SUPERCELL
CHARACTERISTICS.

AS STORMS MOVE INTO CENTRAL OKLAHOMA CLOSER TO RUSH HOUR...THEY WILL
BE ENTERING AN ENVIRONMENT SUPPORTIVE OF SUPERCELLS WITH VERY LARGE
HAIL AND STRONG TORNADOES.

$$

AL
 
FPUS74 KOUN 102053
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
353 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102140-
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-
353 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
AT 345 PM...ISOLATED SEVERE THUNDERSTORMS WERE MOVING THROUGH PARTS
OF FAR NORTH CENTRAL OKLAHOMA. THESE STORMS WERE ALONG OR JUST AHEAD
OF A DRYLINE THAT STRETCHED FROM NEAR ALVA...TO CLINTON...TO
HOBART...TO KNOX CITY TEXAS.

THUS FAR STORM DEVELOPMENT AT POINTS SOUTH OF WATONGA OKLAHOMA HAS
BEEN LIMITED BY A LAYER OF WARM AIR ALOFT CALLED A CAPPING
INVERSION. HOWEVER...RECENT SATELLITE TRENDS AND RAPID UPDATE...HIGH
RESOLUTION SHORT TERM COMPUTER MODELS SUGGEST THAT EXPLOSIVE
THUNDERSTORM DEVELOPMENT WILL BE INCREASINGLY PROBABLE SOUTH ALONG
THE DRYLINE BY 4 TO 5 PM.

AS STORMS MOVE INTO CENTRAL OKLAHOMA CLOSER TO THE RUSH HOUR...THEY
WILL BE ENTERING AN ENVIRONMENT EXTREMELY SUPPORTIVE OF SUPERCELLS
THAT COULD PRODUCE VERY LARGE HAIL AND STRONG TORNADOES. STORM
MOTIONS WILL BE VERY FAST...SO ACT QUICKLY IF A WARNING IS ISSUED
FOR YOUR LOCATION AS THESE STORMS WILL BE DANGEROUS.

$$

AL
 
FPUS74 KOUN 102132
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
432 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102230-
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-
432 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...DANGEROUS SEVERE WEATHER OUTBREAK UNFOLDING ACROSS OKLAHOMA...

THE ENVIRONMENT OVER CENTRAL OKLAHOMA IS EXTREMELY FAVORABLE FOR
SIGNIFICANT TORNADIC SUPERCELLS...AND AS STORMS MOVE INTO THE AREA
LATE THIS AFTERNOON AND THIS EVENING THEY COULD PRODUCE STRONG
TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE DEVELOPING ALONG AND AHEAD OF
A DRYLINE IN WESTERN AND CENTRAL OKLAHOMA. THESE THUNDERSTORMS WERE
GENERALLY MOVING RAPIDLY TO THE NORTHEAST OVER 50 MPH.

PERSONS IN CENTRAL OKLAHOMA SHOULD BE AT A HIGH STATE OF ALERT...AND
BE PREPARED TO ACT CALMLY AND QUICKLY IF A WARNING IS ISSUED FOR
THEIR LOCATION. STORM MOTIONS WILL BE VERY FAST...SO WAITING FOR
VISUAL CLUES TO SEEK SHELTER MAY CAUSE YOU TO REACT TOO SLOWLY.

$$

AL
 
FPUS74 KOUN 102203
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
503 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102245-
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-
503 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...DANGEROUS SEVERE WEATHER OUTBREAK UNFOLDING ACROSS OKLAHOMA...

THE ENVIRONMENT OVER CENTRAL OKLAHOMA IS EXTREMELY FAVORABLE FOR
SIGNIFICANT TORNADIC SUPERCELLS...AND AS STORMS MOVE INTO THE AREA
LATE THIS AFTERNOON AND THIS EVENING THEY COULD PRODUCE STRONG
TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE DEVELOPING ALONG AND AHEAD OF
A DRYLINE IN CENTRAL OKLAHOMA...AND EVEN DOWN INTO WESTERN NORTH
TEXAS. THESE THUNDERSTORMS WERE GENERALLY MOVING RAPIDLY TO THE
NORTHEAST OVER 50 MPH.

THIS IS A VERY DANGEROUS SITUATION. PERSONS IN CENTRAL OKLAHOMA AND
WESTERN NORTH TEXAS SHOULD BE AT A HIGH STATE OF ALERT...AND BE
PREPARED TO ACT CALMLY AND QUICKLY IF A WARNING IS ISSUED FOR THEIR
LOCATION. STORM MOTIONS WILL BE VERY FAST...SO WAITING FOR VISUAL
CLUES TO SEEK SHELTER MAY CAUSE YOU TO REACT TOO SLOWLY.

$$

AL
 
FPUS74 KOUN 102250
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
550 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-102345-
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-
550 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...DANGEROUS SEVERE WEATHER OUTBREAK UNFOLDING ACROSS OKLAHOMA...

THE ENVIRONMENT OVER CENTRAL OKLAHOMA IS EXTREMELY FAVORABLE FOR
SIGNIFICANT TORNADIC SUPERCELLS...AND AS STORMS MOVE INTO THE AREA
LATE THIS AFTERNOON AND THIS EVENING THEY COULD PRODUCE STRONG
TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE DEVELOPING ALONG AND AHEAD OF
A DRYLINE IN CENTRAL OKLAHOMA...AND EVEN DOWN INTO WESTERN NORTH
TEXAS. THESE THUNDERSTORMS WERE GENERALLY MOVING RAPIDLY TO THE
NORTHEAST OVER 50 MPH.

THIS IS A VERY DANGEROUS SITUATION. PERSONS IN CENTRAL OKLAHOMA AND
WESTERN NORTH TEXAS SHOULD BE AT A HIGH STATE OF ALERT...AND BE
PREPARED TO ACT CALMLY AND QUICKLY IF A WARNING IS ISSUED FOR THEIR
LOCATION. STORM MOTIONS WILL BE VERY FAST...SO WAITING FOR VISUAL
CLUES TO SEEK SHELTER MAY CAUSE YOU TO REACT TOO SLOWLY.

$$

AL
 
FPUS74 KOUN 102316
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
616 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-110015-
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-
616 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...EXTREMELY DANGEROUS TORNADO OUTBREAK UNFOLDING ACROSS OKLAHOMA...

THE ENVIRONMENT OVER CENTRAL AND SOUTH CENTRAL OKLAHOMA REMAINS
EXTREMELY FAVORABLE FOR SIGNIFICANT TORNADIC SUPERCELLS...AND AS
STORMS CONTINUE TO MOVE ACROSS THE AREA THIS EVENING THEY COULD
PRODUCE STRONG TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE MOVING ACROSS PARTS OF
CENTRAL OKLAHOMA. THESE THUNDERSTORMS WERE GENERALLY MOVING RAPIDLY
TO THE NORTHEAST OVER 50 MPH.

HOWEVER...REDEVELOPMENT WAS OCCURRING BEHIND THE INITIAL ROUND OF
THUNDERSTORMS...AND SOME OF THESE STORMS WERE ALSO BECOMING SEVERE.
PAY ATTENTION TO THE LATEST INFORMATION AND DO NOT LET YOUR GUARD
DOWN IF YOU ARE EAST OF A LINE FROM NEWKIRK...TO OKLAHOMA CITY...TO
WALTERS.

THIS IS AN EXTREMELY DANGEROUS SITUATION. PERSONS IN CENTRAL
OKLAHOMA SHOULD BE AT A HIGH STATE OF ALERT...AND BE PREPARED TO ACT
CALMLY AND QUICKLY IF A WARNING IS ISSUED FOR THEIR LOCATION. STORM
MOTIONS WILL BE VERY FAST...SO WAITING FOR VISUAL CLUES TO SEEK
SHELTER MAY CAUSE YOU TO REACT TOO SLOWLY.

$$

AL
 
FPUS74 KOUN 110012
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
712 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-110115-
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-
712 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...DANGEROUS TORNADO OUTBREAK SHIFTING TO SOUTH CENTRAL OKLAHOMA...

THE ENVIRONMENT OVER SOUTH CENTRAL OKLAHOMA REMAINS EXTREMELY
FAVORABLE FOR SIGNIFICANT TORNADIC SUPERCELLS...AND AS STORMS
CONTINUE TO MOVE ACROSS THE AREA THIS EVENING THEY COULD PRODUCE
STRONG TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE MOVING ACROSS PARTS OF SOUTH
CENTRAL OKLAHOMA. THESE THUNDERSTORMS WERE GENERALLY MOVING RAPIDLY
TO THE EAST NORTHEAST OVER 50 MPH.

HOWEVER...REDEVELOPMENT WAS OCCURRING BEHIND THE INITIAL ROUND OF
THUNDERSTORMS...AND SOME OF THESE STORMS WERE ALSO BECOMING SEVERE.
PAY ATTENTION TO THE LATEST INFORMATION AND DO NOT LET YOUR GUARD
DOWN IF YOU ARE EAST OF A LINE FROM SHAWNEE OKLAHOMA TO HENRIETTA
TEXAS.

THIS IS AN EXTREMELY DANGEROUS SITUATION. PERSONS IN SOUTH CENTRAL
OKLAHOMA SHOULD BE AT A HIGH STATE OF ALERT...AND BE PREPARED TO ACT
CALMLY AND QUICKLY IF A WARNING IS ISSUED FOR THEIR LOCATION. STORM
MOTIONS WILL BE VERY FAST...SO WAITING FOR VISUAL CLUES TO SEEK
SHELTER MAY CAUSE YOU TO REACT TOO SLOWLY.

$$

AL
 
FPUS74 KOUN 110104
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
804 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-110230-
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-
804 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...

...DANGEROUS TORNADO OUTBREAK SHIFTING TO SOUTH CENTRAL OKLAHOMA...

THE ENVIRONMENT OVER SOUTH CENTRAL OKLAHOMA REMAINS EXTREMELY
FAVORABLE FOR SIGNIFICANT TORNADIC SUPERCELLS...AND AS STORMS
CONTINUE TO MOVE ACROSS THE AREA THIS EVENING THEY COULD PRODUCE
STRONG TORNADOES AND GIANT HAIL.

SCATTERED SUPERCELL THUNDERSTORMS WERE MOVING ACROSS PARTS OF
CENTRAL AND SOUTH CENTRAL OKLAHOMA. THESE THUNDERSTORMS WERE
GENERALLY MOVING RAPIDLY TO THE EAST NORTHEAST OVER 50 MPH.

HOWEVER...REDEVELOPMENT WAS OCCURRING BEHIND THE INITIAL ROUND OF
THUNDERSTORMS...AND MANY OF THESE STORMS WERE SEVERE AND TORNADIC.
PAY ATTENTION TO THE LATEST INFORMATION AND DO NOT LET YOUR GUARD
DOWN IF YOU ARE EAST OF A LINE FROM CALVIN...SOUTHWEST THROUGH
SULPHUR...AND OSCAR..

THIS IS AN EXTREMELY DANGEROUS SITUATION. PERSONS IN SOUTH CENTRAL
AND PARTS OF CENTRAL OKLAHOMA SHOULD BE AT A HIGH STATE OF
ALERT...AND BE PREPARED TO ACT CALMLY AND QUICKLY IF A WARNING IS
ISSUED FOR THEIR LOCATION. STORM MOTIONS WILL BE VERY FAST...SO
WAITING FOR VISUAL CLUES TO SEEK SHELTER MAY CAUSE YOU TO REACT TOO
SLOWLY.

$$
 
FPUS74 KOUN 110352
NOWOUN

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1052 PM CDT MON MAY 10 2010

OKZ004>048-050>052-TXZ083>090-110500-
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-
1052 PM CDT MON MAY 10 2010

.REGIONAL WEATHER DISCUSSION...
STRONG THUNDERSTORMS WILL CONTINUE SKIRT FAR SOUTHEAST OKLAHOMA
THROUGH MIDNIGHT...MAINLY NEAR LAKE TEXOMA EASTWARD THROUGH WADE. NO
ADDITIONAL SEVERE WEATHER IS EXPECTED.

NO REDEVELOPMENT IS EXPECTED OVERNIGHT...BUT SCATTERED STRONG AND
SEVERE THUNDERSTORMS WILL BE POSSIBLE TOMORROW.

$$

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