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Tornado Watch 292
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WW0292 Radar
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   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 292
   NWS STORM PREDICTION CENTER NORMAN OK
   1010 AM CDT SAT MAY 10 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          SOUTHERN ARKANSAS
          NORTHERN LOUISIANA
          WEST-CENTRAL MISSISSIPPI
   
   EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1010 AM UNTIL
   400 PM CDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH NORTHWEST OF
   TEXARKANA ARKANSAS TO 25 MILES NORTH NORTHEAST OF JACKSON
   MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
   
   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...WELL-DEFINED WARM FRONT CURRENTLY ALONG LA/AR BORDER
   EAST TO CNTRL MS WILL CONTINUE TO LIFT NWD ACROSS WATCH AREA INTO
   THE AFTERNOON AS INCREASING LARGE SCALE ASCENT SPREADS EAST WITH
   STRONG UPPER WAVE. INCREASINGLY MOIST/UNSTABLE AIR MASS WILL FUEL
   TSTM DEVELOPMENT WITH SURFACE-BASED SUPERCELLS MOST LIKELY
   DEVELOPING ACROSS THE AREA LATER THIS AFTERNOON. SHEAR PROFILES IN
   THE WARM SECTOR...AND ESPECIALLY NEAR THE WARM FRONT...ARE FORECAST
   TO BE QUITE SUPPORTIVE OF LOW LEVEL STORM ROTATION/MESOCYCLONES WITH
   EFFECTIVE SRH VALUES IN SOME AREAS FORECAST TO EXCEED 200 M2/S2.
   THUS...A FEW TORNADIC SUPERCELLS APPEAR POSSIBLE WITH ADDITIONAL
   THREATS OF LARGE HAIL AND DAMAGING OUTFLOW WINDS.
   
   AVIATION...TORNADOES AND 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
   450. MEAN STORM MOTION VECTOR 27030.
   
   
   ...CARBIN
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