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000 

WWUS20 KWNS 221248

SEL3

SPC WW 221248

ARZ000-MOZ000-OKZ000-221800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 213

NWS STORM PREDICTION CENTER NORMAN OK

750 AM CDT TUE APR 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN ARKANSAS

       SOUTHERN MISSOURI

       NORTHEAST OKLAHOMA



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 750 AM UNTIL

100 PM CDT.



HAIL TO 2 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 55

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

SOUTHWEST OF GROVE OKLAHOMA TO 35 MILES EAST OF WEST PLAINS

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...CLUSTER OF THUNDERSTORMS OVER SOUTHERN MO HAS PRODUCED

HAIL MUCH OF NIGHT.  THESE STORMS ARE EXPECTED TO CONTINUE SPREADING

SOUTHWARD THIS MORNING INTO NORTHERN AR...WHILE NEW STORMS DEVELOP

OVER NORTHEAST OK.  LARGE HAIL WILL BE THE MAIN THREAT WITH THESE

STORMS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 30025.





...HART

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