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595 

WWUS20 KWNS 292149

SEL6

SPC WW 292149

KSZ000-OKZ000-300400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 396

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT SUN MAY 29 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       LARGE PART OF CENTRAL KANSAS

       PARTS OF NORTHWEST OKLAHOMA



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 450 PM UNTIL

1100 PM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH

NORTHWEST OF CONCORDIA KANSAS TO 10 MILES SOUTH OF GAGE OKLAHOMA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 395...



DISCUSSION...VERY STEEP LAPSE RATES ALONG DRY LINE COUPLED WITH

STRONG INSTABILITY TO THE E WITH MLCAPES AOA 3500 J/KG SUPPORT AT

LEAST A FEW SEVERE THUNDERSTORMS DEVELOPING.  WITH DCAPES ABOVE 1500

J/KG AND 40KT CELL MOVEMENT...DAMAGING WINDS WILL BE THE PRIMARY

THREAT AS STORMS DEVELOP ALONG AND JUST E OF DRY LINE NWD TO NEB

BORDER.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 21040.





...HALES

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