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WWUS20 KWNS 302019

SEL6

SPC WW 302019

KSZ000-310200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 236

NWS STORM PREDICTION CENTER NORMAN OK

320 PM CDT SUN MAY 30 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF CENTRAL AND EASTERN KANSAS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 320 PM UNTIL 900

PM CDT.



HAIL TO 2 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 30 MILES NORTHWEST OF

TOPEKA KANSAS TO 45 MILES SOUTH SOUTHWEST OF WICHITA KANSAS.  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.



DISCUSSION...THUNDERSTORMS ARE DEVELOPING QUICKLY ALONG THE FRONTAL

ZONE WHERE THE AIR MASS IS VERY UNSTABLE WITH MLCAPES TO 3000 J/KG.

WEAK SHEAR WILL RESULT IN PULSE STORMS WITH LOCALIZED DOWNBURSTS AND

LARGE HAIL.  STORMS SHOULD BEGIN TO DECREASE IN INTENSITY BY SUNSET

WITH CESSATION OF SURFACE HEATING.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 24010.





...HALES

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