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000 

WWUS20 KWNS 281528

SEL8

SPC WW 281528

ARZ000-KSZ000-MOZ000-OKZ000-282000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 628

NWS STORM PREDICTION CENTER NORMAN OK

1030 AM CDT SAT JUN 28 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHWEST ARKANSAS

       SMALL PART OF SOUTHEAST KANSAS

       PARTS OF SOUTHWEST MISSOURI

       NORTHEAST OKLAHOMA



EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1030 AM UNTIL

300 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH

SOUTHWEST OF TULSA OKLAHOMA TO 45 MILES SOUTHEAST OF MONETT

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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...THE MARGINALLY SVR MCS SERN KS IS NOW MOVING INTO AN

INCREASINGLY UNSTABLE AIR MASS ACROSS THE WATCH AREA.  POTENTIAL FOR

DAMAGING WINDS EXPECTED TO INCREASE AS THE STORMS MOVE/PROPAGATE S

OF E INTO NWRN AR/SERN OK.



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 500. MEAN STORM

MOTION VECTOR 29030.





...HALES

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