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229 

WWUS20 KWNS 041908

SEL6

SPC WW 041908

KSZ000-NEZ000-050100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 116

NWS STORM PREDICTION CENTER NORMAN OK

210 PM CDT SAT APR 4 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTH CENTRAL AND NORTHEAST KANSAS

       PARTS OF SOUTH CENTRAL AND SOUTHEASTERN NEBRASKA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 210 PM UNTIL

800 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 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST OF

HASTINGS NEBRASKA TO 20 MILES EAST OF TOPEKA 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...STRONG SURFACE AND UPPER LOW WRN KS PROVIDING

IMPRESSIVE SUPPORT FOR SEVERE THUNDERSTORM DEVELOPMENT ACROSS WATCH

AREA.  VERY LIMITED MOISTURE AND INSTABILITY WILL LIMIT THE

POTENTIAL FOR SUPERCELLS...WITH PRIMARY THREAT LARGE HAIL AND

DAMAGING WINDS. ACTIVITY WILL DEVELOP ALONG DRY LINE NCENTRAL

KS...THEN SPREAD RAPIDLY NE/EWD ACROSS THE WATCH AREA REMAINDER OF

THE AFTERNOON.



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 400. MEAN STORM

MOTION VECTOR 24040.





...HALES

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