

716 

WWUS20 KWNS 111901

SEL8

SPC WW 111901

INZ000-KYZ000-OHZ000-TNZ000-VAZ000-WVZ000-120200-



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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