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029 

WWUS20 KWNS 010642

SEL6

SPC WW 010642

ARZ000-MOZ000-OKZ000-011000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 216

NWS STORM PREDICTION CENTER NORMAN OK

145 AM CDT TUE MAY 1 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       SOUTHWEST MISSOURI

       NORTHEAST OKLAHOMA



EFFECTIVE THIS TUESDAY MORNING FROM 145 AM UNTIL 500 AM CDT.



HAIL TO 1 INCH 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 40

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES WEST OF

SPRINGFIELD MISSOURI TO 15 MILES SOUTH OF FAYETTEVILLE ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 214...WW 215...



DISCUSSION...A LINE OF STRONG/SEVERE THUNDERSTORMS CONTINUES TO

TRACK QUICKLY EASTWARD ACROSS NORTHEAST OK...AND WILL MOVE ACROSS

THE WATCH AREA IN THE NEXT FEW HOURS.  STORMS WILL MOVE INTO AN

INCREASINGLY STABLE BOUNDARY LAYER WITH STORMS LIKELY TO SLOWLY

WEAKEN THROUGH 10Z.  HOWEVER...MESOSCALE ORGANIZATION OF BOWING

COMPLEX MAY ALLOW STORMS TO PRODUCE LOCALLY DAMAGING WINDS FOR A

WHILE LONGER.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

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

VECTOR 26040.





...HART

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