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Severe Thunderstorm Watch 62
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WW0062 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 62
   NWS STORM PREDICTION CENTER NORMAN OK
   1125 AM CDT WED MAR 25 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          PARTS OF CENTRAL AND NORTH TEXAS
   
   EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1125 AM UNTIL
   600 PM CDT.
   
   HAIL TO 2.5 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 25 MILES NORTH
   NORTHWEST OF SAN ANGELO TEXAS TO 40 MILES NORTHEAST OF CORSICANA
   TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
   WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
   
   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...ELEVATED THUNDERSTORMS WILL CONTINUE TO INCREASE IN
   COVERAGE AND INTENSITY ACROSS CENTRAL AND N TX OVER THE NEXT FEW
   HOURS...AS ISENTROPIC LIFT STRENGTHENS ATOP THE LOW-LEVEL FRONTAL
   SURFACE IN RESPONSE TO THE APPROACHING MID-LEVEL SHORT-WAVE TROUGH. 
   WITH 50 TO 60 KT MID-LEVEL WSWLYS ATOP VEERING LOW-LEVEL
   FLOW...SHEAR WILL SUPPORT ROTATING/SUPERCELL STORMS.  WHILE AN
   ISOLATED DAMAGING WIND GUST WILL BE POSSIBLE -- PARTICULARLY OVER
   SRN PORTIONS OF THE WATCH -- GIVEN POTENTIAL FOR SOME DOWNDRAFT
   ENHANCEMENT DUE TO SUB-CLOUD EVAPORATIVE COOLING...PRIMARY THREAT
   WILL BE LARGE HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
   MOTION VECTOR 24035.
   
   
   ...GOSS
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