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549 

WWUS20 KWNS 262208

SEL1

SPC WW 262208

ARZ000-OKZ000-270300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 221

NWS STORM PREDICTION CENTER NORMAN OK

510 PM CDT TUE APR 26 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHERN ARKANSAS

       PARTS OF EASTERN OKLAHOMA



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 510 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 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 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST OF

MCALESTER OKLAHOMA TO 10 MILES EAST NORTHEAST OF BATESVILLE

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...WW 217...WW 218...WW 219...WW 220...



DISCUSSION...SEVERE THUNDERSTORMS INCLUDING SUPERCELLS ARE

DEVELOPING VICINITY WARM FRONTAL ZONE ACROSS THE WATCH. WITH SHEAR

CONTINUING TO INCREASE SUPERCELLS WILL INCLUDE BOTH LARGE HAIL AND

TORNADO THREAT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24035.





...HALES

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