SPC Severe Thunderstorm Watch 237

WW 237 SEVERE TSTM KS 040640Z – 041000Z


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

via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0237.html