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WWUS20 KWNS 271741

SEL4

SPC WW 271741

ARZ000-ILZ000-KYZ000-MOZ000-TNZ000-280000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 234

NWS STORM PREDICTION CENTER NORMAN OK

1245 PM CDT WED APR 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST ARKANSAS

       SOUTHERN ILLINOIS

       WESTERN KENTUCKY

       SOUTHEAST MISSOURI

       WEST TENNESSEE



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL

700 PM CDT.



HAIL TO 2.5 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 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST

NORTHWEST OF BATESVILLE ARKANSAS TO 25 MILES EAST OF CLARKSVILLE

TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 230...WW 231...WW

232...WW 233...



DISCUSSION...SCATTERED INTENSE THUNDERSTORMS ARE CONTINUING TO

DEVELOP AHEAD OF STRONG MID LEVEL VORTICITY MAX OVER NORTHWEST AR.

INITIAL THREAT FROM THESE STORMS WILL BE LARGE HAIL.

HOWEVER...PORTIONS OF THE WATCH AREA OVER KY/TN WILL NEED TO BE

MONITORED FOR POSSIBLE UPGRADE TO TORNADO WATCH THROUGH THE

AFTERNOON AS RAPID SURFACE DESTABILIZATION OCCURS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 24035.





...HART

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