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Severe Thunderstorm Watch 556
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WW0556 Radar
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   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 556
   NWS STORM PREDICTION CENTER NORMAN OK
   710 PM CDT MON JUN 16 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHWEST AND NORTH CENTRAL TEXAS
   
   EFFECTIVE THIS MONDAY NIGHT FROM 710 PM UNTIL MIDNIGHT CDT.
   
   HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST
   SOUTHWEST OF CHILDRESS TEXAS TO 45 MILES SOUTH SOUTHEAST OF
   WICHITA FALLS TEXAS.  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 551...WW 552...WW
   553...WW 555...
   
   DISCUSSION...SEVERE THUNDERSTORMS JUST NORTH OF A SWD MOVING OUTFLOW
   BOUNDARY OVER EXTREME SWRN OK ARE EXPECTED TO CONTINUE SPREADING SWD
   AS THE BOUNDARY MOVES INTO AN ENVIRONMENT CHARACTERIZED BY A DEEP
   MIXED LAYER AND STEEP LAPSE RATES.  ADDITIONAL STORMS ARE DEVELOPING
   WWD ALONG THE BOUNDARY INTO THE FAR SERN TX PANHANDLE AND SIMILAR
   STORM POTENTIAL IS EXPECTED WITH THIS ACTIVITY.  LARGE HAIL AND
   DAMAGING WINDS ARE LIKELY WITH THE STRONGEST CELLS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 29020.
   
   
   ...WEISS
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