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Severe Thunderstorm Watch 743
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WW0743 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 743
   NWS STORM PREDICTION CENTER NORMAN OK
   430 PM CDT MON SEP 21 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTH CENTRAL TEXAS
   
   EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 430 PM UNTIL
   1100 PM 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 90
   STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF
   DALLAS TEXAS TO 30 MILES SOUTHWEST OF STEPHENVILLE TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU3).
   
   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 742...
   
   DISCUSSION...THUNDERSTORMS ARE DEVELOPING ALONG THE DRYLINE FROM
   JUST E OF SPS TO E OF ABI.  STRONG INSTABILITY AND EFFECTIVE BULK
   SHEAR AROUND 30 KT WILL SUPPORT A FEW PERSISTENT MULTICELL
   CLUSTERS...AS WELL AS STORMS WITH SOME SUPERCELL STRUCTURES.  LARGE
   HAIL AND DAMAGING WINDS WILL BE THE MAIN THREATS.  LATER THIS
   EVENING...STORM INTERACTIONS COULD LEAD TO UPSCALE GROWTH INTO MORE
   OF A LINEAR MCS...WITH A CONTINUING THREAT FOR DAMAGING WINDS AND
   LARGE 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 27025.
   
   
   ...THOMPSON
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Page last modified: September 21, 2009
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