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000 

WWUS20 KWNS 081343

SEL7

SPC WW 081343

ILZ000-INZ000-KYZ000-OHZ000-082000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 367

NWS STORM PREDICTION CENTER NORMAN OK

845 AM CDT FRI JUN 8 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHEASTERN ILLINOIS

       PARTS OF SOUTHERN AND EASTERN INDIANA

       MUCH OF WESTERN AND CENTRAL KENTUCKY

       SOUTHWESTERN OHIO



EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 845 AM UNTIL 300

PM CDT.



HAIL TO 2 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES WEST

SOUTHWEST OF FORT CAMPBELL KENTUCKY TO 25 MILES NORTH NORTHEAST

OF DAYTON OHIO.  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.



DISCUSSION...LINE OF STRONG THUNDERSTORMS ACROSS LOWER OH VALLEY

EXPECTED TO INCREASE IN INTENSITY AS THEY CONTINUE EWD INTO A

VIRTUALLY UNCAPPED AND MODERATELY UNSTABLE AIR MASS.  40-50KT OF

SHEAR COUPLED WITH MLCAPES AOA 2000 J/KG SUPPORT LINE SEGMENTS/BOWS

WITH WIND DAMAGE BEING THE PRIMARY THREAT.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 24035.





...HALES

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