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WWUS20 KWNS 252151

SEL6

SPC WW 252151

ARZ000-ILZ000-INZ000-KYZ000-MOZ000-MSZ000-TNZ000-260500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 206

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT MON APR 25 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHEAST ARKANSAS

       PARTS OF ILLINOIS

       SMALL PART OF SOUTHWEST INDIANA

       PARTS OF WESTERN KENTUCKY

       PARTS OF SOUTHEAST MISSOURI

       LARGE PART OF NORTHERN MISSISSIPPI

       WESTERN TENNESSEE



EFFECTIVE THIS MONDAY AFTERNOON FROM 450 PM UNTIL MIDNIGHT CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 INCHES IN DIAMETER...

THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE

POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES WEST SOUTHWEST OF

OXFORD MISSISSIPPI TO 35 MILES EAST NORTHEAST OF CARBONDALE

ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 201...WW 202...WW

203...WW 204...WW 205...



DISCUSSION...AS SURFACE LOW DEEPENS THIS EVENING NEWD TOWARD LOWER

OH VALLEY...STRONG SHEAR PROFILES AND RAPID NWD DESTABILIZATION WILL

TAKE PLACE NWD THRU THE WATCH.  THIS SUPPORTS CURRENT SUPERCELLS NOW

IN AR TO DEVELOP RAPIDLY NEWD ACROSS THE WATCH WITH POTENTIAL FOR

STRONG TORNADOES.



AVIATION...TORNADOES AND 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

550. MEAN STORM MOTION VECTOR 23035.





...HALES

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