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000 

WWUS20 KWNS 032049

SEL4

SPC WW 032049

ARZ000-OKZ000-040300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 154

NWS STORM PREDICTION CENTER NORMAN OK

350 PM CDT THU APR 3 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN ARKANSAS

       EASTERN OKLAHOMA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 350 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 2 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 50 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST OF MCALESTER

OKLAHOMA TO 40 MILES SOUTHEAST OF FLIPPIN ARKANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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 153...



DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING ALONG AN AXIS

FROM WESTERN NORTH TX INTO EASTERN OK.  THIS ACTIVITY IS LIKELY TO

INCREASE IN COVERAGE AND INTENSITY THROUGH THE EVENING HOURS AS LOW

LEVEL WARM ADVECTION AND DESTABILIZATION OCCUR.  LARGE HAIL WILL BE

THE MAIN THREAT EARLY...WITH AN INCREASING THREAT OF ISOLATED

TORNADOES THIS EVENING.



AVIATION...TORNADOES AND 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 25030.





...HART

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