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913 

WWUS20 KWNS 040645

SEL7

SPC WW 040645

KSZ000-041000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 237

NWS STORM PREDICTION CENTER NORMAN OK

140 AM CDT FRI MAY 4 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL KANSAS



EFFECTIVE THIS FRIDAY MORNING FROM 140 AM UNTIL 500 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF

HUTCHINSON KANSAS TO 40 MILES SOUTHEAST OF WICHITA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

TORNADO WATCH NUMBER 234. WATCH NUMBER 234 WILL NOT BE IN EFFECT

AFTER 140 AM CDT. CONTINUE...WW 235...WW 236...



DISCUSSION...CONCENTRATED AREA OF INTENSE CONVECTION HAS EVOLVED

OVER THE PAST 90 MINUTES OVER S CNTRL KS...ALONG NRN FRINGE OF RICH

MOIST AXIS.  SIZABLE NATURE OF THE LOFTED PRECIP AREA...QUALITY OF

MOISTURE INFLOW /PW > 1.10 INCH/...AND STRENGTH OF LLJ /45+ KTS/

SUGGEST POTENTIAL FOR DMGG PRECIP-ENHANCED DOWNDRAFTS.  THE STORMS

MAY EVOLVE INTO A SMALL FORWARD-PROPAGATING CLUSTER THAT EXTENDS THE

SVR THREAT GENERALLY E ACROSS THE REMAINDER OF S CNTRL KS.

MARGINALLY SVR HAIL ALSO MAY OCCUR.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 27025.





...CORFIDI

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