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Severe Thunderstorm Watch 51
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WW0051 Radar
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   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 51
   NWS STORM PREDICTION CENTER NORMAN OK
   625 PM EDT SUN MAR 8 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          CENTRAL AND EASTERN KENTUCKY
          CENTRAL OHIO
   
   EFFECTIVE THIS SUNDAY EVENING FROM 625 PM UNTIL 1100 PM EDT.
   
   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 55
   STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH
   NORTHWEST OF MANSFIELD OHIO TO 45 MILES SOUTHWEST OF LONDON
   KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 50...
   
   DISCUSSION...A STRONG SURFACE LOW OVER SRN LK MI WILL DEVELOP ENEWD
   TO THE LOWER GREAT LAKES...WHILE A WARM FRONT LIFTS SLOWLY NWD
   ACROSS NRN OH AND A TRAILING SURFACE TROUGH SWEEPS EWD ACROSS
   IN/OH/KY THIS EVENING.  A BROKEN BAND OF SEVERE STORMS WILL CONTINUE
   TO MOVE EWD IN ADVANCE OF THE SURFACE TROUGH AND NEAR THE WARM
   FRONT/TROUGH TRIPLE POINT...WITH A CONTINUED THREAT FOR DAMAGING
   WINDS GIVEN RESIDUAL STEEP LOW-LEVEL LAPSE RATES...WEAK
   INSTABILITY...AND 50-70 KT WSWLY FLOW IN THE LOW LEVELS.  THE
   EARLIER TORNADO THREAT FARTHER W SHOULD GRADUALLY DIMINISH WITH EWD
   EXTENT THIS EVENING AS CONVECTION MOVES E OF THE RICHER LOW-LEVEL
   MOISTURE AND SOMEWHAT STRONGER WARM SECTOR INSTABILITY.
   
   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 400. MEAN STORM MOTION
   VECTOR 25045.
   
   
   ...THOMPSON
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