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Particularly Dangerous Situation (PDS) Tornado Watch 135
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WW0135 Radar
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   SEL5
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 135
   NWS STORM PREDICTION CENTER NORMAN OK
   325 PM CDT FRI APR 13 2007
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTH CENTRAL TEXAS
   
   EFFECTIVE THIS FRIDAY AFTERNOON FROM 325 PM UNTIL MIDNIGHT CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
   THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
   POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
   MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF SHERMAN
   TEXAS TO 45 MILES WEST SOUTHWEST OF TEMPLE TEXAS.  FOR A COMPLETE
   DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
   (WOUS64 KWNS WOU5).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 133...WW 134...
   
   DISCUSSION...SUPERCELL THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
   AFTERNOON ALONG SURFACE DRYLINE OVER WESTERN NORTH TX.  THESE STORMS
   WILL TRACK EAST-NORTHEASTWARD ACROSS THE DFW METRO AREA THIS
   EVENING...WHILE OTHER MORE ISOLATED FORM ACROSS THE REGION.  VERY
   STRONG LOW LEVEL VERTICAL SHEAR PROFILES AND FAVORABLE LOW LEVEL
   MOISTURE PARAMETERS SUGGEST THE THREAT OF STRONG TORNADOES ACROSS
   THE WATCH AREA.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24035.
   
   
   ...HART
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Page last modified: April 14, 2007
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