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Tornado Watch 23
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WW0023 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 23
   NWS STORM PREDICTION CENTER NORMAN OK
   1110 AM CST WED FEB 18 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          LARGE PART OF CENTRAL AND EASTERN KENTUCKY
          LARGE PART OF MIDDLE TENNESSEE
   
   EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 1110 AM UNTIL
   500 PM CST.
   
   TORNADOES...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 95 STATUTE
   MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF JACKSON
   KENTUCKY TO 80 MILES SOUTH SOUTHWEST OF NASHVILLE TENNESSEE.  FOR
   A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   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...THUNDERSTORM WILL INCREASE IN NUMBER AND INTENSITY
   AHEAD OF COLD FRONT MOVING INTO WRN KY/TN.  VERY STRONG SHEAR AND
   INCREASINGLY UNSTABLE AIR MASS SUPPORTS DEVELOPMENT OF BOTH
   SUPERCELLS AND SHORT LINE SEGMENTS.  TORNADOES WILL BE POSSIBLE WITH
   ANY SUPERCELL AS THEY MOVE VERY RAPIDLY EWD. DAMAGING WINDS ALSO
   LIKELY IN STRONGER STORMS...PARTICULARLY LINE SEGMENTS GIVEN THE
   INTENSITY OF THE WIND FIELDS ACROSS THE AREA.
   
   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
   450. MEAN STORM MOTION VECTOR 26050.
   
   
   ...HALES
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