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000 

WWUS20 KWNS 191908

SEL9

SPC WW 191908

ARZ000-KSZ000-MOZ000-OKZ000-200300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 579

NWS STORM PREDICTION CENTER NORMAN OK

210 PM CDT THU JUN 19 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHWEST ARKANSAS

       PARTS OF SOUTH CENTRAL AND SOUTHEAST KANSAS

       SOUTHWEST MISSOURI

       MUCH OF NORTHERN OKLAHOMA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 210 PM UNTIL

1000 PM CDT.



HAIL TO 3 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 90

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES EAST

SOUTHEAST OF SPRINGFIELD MISSOURI TO 15 MILES NORTH OF ALVA

OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 577...WW 578...



DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY

ACROSS NWRN OK INTO SRN KS/MO AS AIR MASS NOW MDTLY UNSTABLE AND

UNCAPPED.  LARGE HAIL AND DAMAGING WINDS WILL BE ASSOCIATED WITH

STRONGEST STORMS INCLUDING POSSIBLE SUPERCELLS AS ACTIVITY MOVES

S/SEWD.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 32025.





...HALES

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