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868 

WWUS20 KWNS 262004

SEL7

SPC WW 262004

ARZ000-ILZ000-KYZ000-MOZ000-MSZ000-TNZ000-270300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 217

NWS STORM PREDICTION CENTER NORMAN OK

305 PM CDT TUE APR 26 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       SOUTHEAST ILLINOIS

       WESTERN KENTUCKY

       SOUTHEAST MISSOURI INCLUDING THE BOOTHEEL

       NORTHWEST MISSISSIPPI

       WEST TENNESSEE



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL

1000 PM CDT.



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



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

THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE

POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH OF FORT

CAMPBELL KENTUCKY TO 35 MILES EAST OF EL DORADO ARKANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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 213...WW 214...WW

215...WW 216...



DISCUSSION...THUNDERSTORMS ARE INTENSIFYING ALONG A WEAK SURFACE

BOUNDARY EXTENDING FROM CENTRAL AR INTO WESTERN KY.  A FEW OF THESE

INITIAL STORMS WILL LIKELY BECOME SUPERCELLS WITH A RISK OF LARGE

HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES.  THE RISK OF

SIGNIFICANT SEVERE WEATHER WILL INCREASE THROUGH THE EVENING AS

STORMS FORM TO THE SOUTHWEST AND MOVE INTO THE WATCH AREA.  VERY

STRONG SHEAR PROFILES DURING THE LATTER HALF OF THE WATCH PERIOD

SUGGEST THAT PDS WORDING IS APPROPRIATE...WITH STRONG TORNADOES

POSSIBLE.



AVIATION...TORNADOES AND 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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