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Particularly Dangerous Situation (PDS) Tornado Watch 130
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WW0130 Radar
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   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 130
   NWS STORM PREDICTION CENTER NORMAN OK
   1020 AM CDT TUE MAR 18 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          A LARGE PORTION OF ARKANSAS
          SMALL PART OF SOUTHEAST OKLAHOMA
          PARTS OF NORTHEAST TEXAS
   
   EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1020 AM UNTIL 600
   PM CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 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 75 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 15 MILES EAST SOUTHEAST OF
   JONESBORO ARKANSAS TO 55 MILES SOUTHWEST OF PARIS TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU0).
   
   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.
   
   DISCUSSION...THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY ALONG AND S
   OF WARM FRONT WHICH EXTENDS FROM E OF DAL TO NRN AR.  VERY STRONG
   DEEP LAYER SHEAR AND A MOIST...INCREASINGLY UNSTABLE AIR MASS
   SUPPORTS TORNADIC SUPERCELLS.  GIVEN THE STRENGTH OF VEERING SHEAR
   PROFILES POTENTIAL EXITS FOR STRONG TORNADOES.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24040.
   
   
   ...HALES
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