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Tornado Watch 18
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WW0018 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 18
   NWS STORM PREDICTION CENTER NORMAN OK
   200 PM EST WED FEB 11 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          SOUTHEAST INDIANA
          EASTERN KENTUCKY
          SOUTHERN OHIO
          EASTERN TENNESSEE
          EXTREME SOUTHWEST VIRGINIA
          WESTERN WEST VIRGINIA INCLUDING THE NORTHERN PANHANDLE
   
   EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL
   900 PM EST.
   
   TORNADOES...HAIL TO 0.5 INCH 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 EAST AND WEST OF A LINE FROM 40 MILES NORTH OF ZANESVILLE
   OHIO TO 35 MILES SOUTHEAST OF KNOXVILLE TENNESSEE.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU8).
   
   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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 16...WW 17...
   
   DISCUSSION...LINE OF LOW-TOPPED CONVECTION IS RACING EASTWARD ACROSS
   KY/TN AHEAD OF 130+ KNOT MID LEVEL JET MAX.  DESPITE VERY LIMITED
   INSTABILITY...EXTREMELY STRONG FORCING AND WIND FIELDS WILL PROMOTE
   A RISK OF WIDESPREAD WIND DAMAGE ALONG LEADING EDGE OF CONVECTION. 
   ISOLATED AND BRIEF TORNADOES WILL ALSO BE POSSIBLE IN BOW/LEWP
   STRUCTURES ALONG LINE.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   350. MEAN STORM MOTION VECTOR 25045.
   
   
   ...HART
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