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Severe Thunderstorm Watch 754
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WW0754 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low 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.
   SEL4
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 754
   NWS STORM PREDICTION CENTER NORMAN OK
   1025 PM CDT THU OCT 1 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EXTREME SOUTHEAST ARKANSAS
          PARTS OF CENTRAL AND NORTHEAST LOUISIANA
          EXTREME WEST CENTRAL MISSISSIPPI
   
   EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1025 PM
   UNTIL 400 AM CDT.
   
   HAIL TO 1 INCH 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 60
   STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH
   NORTHEAST OF MONROE LOUISIANA TO 30 MILES EAST SOUTHEAST OF
   NATCHITOCHES LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).
   
   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 752...WW 753...
   
   DISCUSSION...BAND OF SEVERE STORMS WILL CONTINUE TO MOVE EWD/SEWD
   OVERNIGHT IMMEDIATELY IN ADVANCE OF A SURFACE COLD FRONT.  THOUGH
   THE ERN EXTENT OF THE LOW-LEVEL DESTABILIZATION IS IN QUESTION...A
   FEED OF MOISTURE FROM THE S/SW AND RELATIVELY STEEP MID LEVEL LAPSE
   RATES FROM THE W WILL MAINTAIN SUFFICIENT INSTABILITY FOR STORMS
   CAPABLE OF PRODUCING DAMAGING WINDS AND ISOLATED LARGE HAIL.  DEEP
   LAYER VERTICAL SHEAR WILL ALSO REMAIN SUFFICIENT FOR EMBEDDED
   BOWS/SUPERCELLS AS THE PRIMARY MID LEVEL TROUGH PASSES TO THE N OF
   THIS AREA.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
   VECTOR 29030.
   
   
   ...THOMPSON
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