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532 

WWUS20 KWNS 142228

SEL6

SPC WW 142228

OKZ000-TXZ000-150500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 476

NWS STORM PREDICTION CENTER NORMAN OK

530 PM CDT TUE JUN 14 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST...CENTRAL...AND NORTHEAST OKLAHOMA

       WESTERN NORTH TEXAS



EFFECTIVE THIS TUESDAY AFTERNOON FROM 530 PM UNTIL MIDNIGHT 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 EAST AND WEST OF A LINE FROM 45 MILES WEST

SOUTHWEST OF WICHITA FALLS TEXAS TO 40 MILES NORTHWEST OF GROVE

OKLAHOMA.  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 475...



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP SOON

ALONG A COLD FRONT ACROSS OK...AND ALONG THE DRYLINE OVER WESTERN

NORTH TX.  THIS ACTIVITY WILL SPREAD EAST-NORTHEASTWARD ACROSS THE

WATCH AREA.  THERMODYNAMIC PARAMETERS APPEAR FAVORABLE FOR ORGANIZED

MULTICELL OR SUPERCELL STORMS CAPABLE OF DAMAGING WINDS AND HAIL.



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 25030.





...HART

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