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759 

WWUS20 KWNS 231943

SEL7

SPC WW 231943

ILZ000-KSZ000-MOZ000-240300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 397

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CDT WED JUN 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SMALL PART OF WESTERN ILLINOIS

       PARTS OF EASTERN KANSAS

       LARGE PART OF NOR THEN AND WESTERN MISSOURI



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

1000 PM CDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF

KIRKSVILLE MISSOURI TO 55 MILES SOUTH OF OLATHE 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...CONTINUE...WW 395...WW 396...



DISCUSSION...WITH THE AIR MASS VERY TO EXTREMELY UNSTABLE ACROSS THE

WATCH WITH MLCAPES AOA 3000 J/KG...THE COLD FRONT NOW MOVING SEWD

ACROSS NWRN MO/ERN KS EXPECTED TO INITIATE SEVERE THUNDERSTORMS.

PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING DOWNBURSTS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 27025.





...HALES

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