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WWUS20 KWNS 252039

SEL3

SPC WW 252039

KSZ000-OKZ000-TXZ000-260400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 183

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT SAT APR 25 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN AND EASTERN KANSAS

       PARTS OF NORTHERN AND WESTERN OKLAHOMA

       PARTS OF EASTERN TEXAS PAN HANDLE



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 340 PM UNTIL

1100 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 60 MILES NORTH NORTHWEST OF

CHILDRESS TEXAS TO 40 MILES SOUTHEAST OF TOPEKA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 182...



DISCUSSION...SEVERE THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY ALONG

NEARLY STALLED FRONTAL ZONE FROM NEAR EMP SWWD TO S OF AMA.  WITH

MLCAPES ABOVE 2500 J/KG AND VEERING SHEAR PROFILES IN

PLACE...SUPERCELLS SHOULD BE THE PRIMARY MODE INTO THE EVENING.

VERY LARGE HAIL GIVEN THE STEEP LAPSE RATES AND INSTABILITY IS

EXPECTED WITH TORNADOES BECOMING AN INCREASED THREAT WITH ANY

SUPERCELL THRU THE EVENING AS LOW LEVEL JET INCREASES AND BACKS

AHEAD OF STRONG TROUGH APPROACHING FROM THE SRN ROCKIES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24030.





...HALES

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