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Severe Thunderstorm Watch 160
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WW0160 Radar
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   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 160
   NWS STORM PREDICTION CENTER NORMAN OK
   120 AM CDT FRI APR 4 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          A LARGE PART OF NORTHERN...CENTRAL AND SOUTH CENTRAL TEXAS
   
   EFFECTIVE THIS FRIDAY MORNING FROM 120 AM UNTIL 1000 AM 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 100
   STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF
   DALLAS TEXAS TO 80 MILES SOUTHWEST OF JUNCTION TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU0).
   
   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 157...WW 158...WW 159...
   
   DISCUSSION...TSTMS/POSSIBLE SUPERCELLS EXPECTED TO CONTINUE FORMING
   ACROSS N TX AS COLD FRONT CONTINUES S ACROSS REGION AND UVV
   STRENGTHENS WITH APPROACH OF BROAD NM UPR TROUGH.  FARTHER
   S...ANOTHER AREA OF STORMS/POSSIBLE SUPERCELLS EXPECTED TO
   MOVE/DEVELOP E FROM NEAR THE BIG BEND REGION IN RESPONSE TO SAME
   TROUGH...AND TO SLIGHTLY BACKED FLOW AT THE SURFACE.  
   MOST OF THE N TX STORMS SHOULD REMAIN ELEVATED ABOVE FRONTAL
   SURFACE.  THEY SHOULD MOVE/DEVELOP GENERALLY E OR ESE WITH
   TIME...POSSIBLY IN THE FORM OF AN ENLARGENING MCS.  LARGE HAIL AND
   POSSIBLY DMGG WIND SHOULD BE THE MAIN THREATS.  THE S TX STORMS
   SHOULD MOSTLY BE SURFACE-BASED AND COULD POSE AN ISOLATED TORNADO
   THREAT.  BUT WEAKNESS IN MID-LEVEL FLOW...PER VWP DATA...SUGGESTS
   THAT MAIN THREATS SHOULD BE LARGE HAIL/DMGG WIND.
   
   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 24030.
   
   
   ...CORFIDI
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