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WWUS20 KWNS 271227

SEL9

SPC WW 271227

KYZ000-NCZ000-TNZ000-VAZ000-271800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 229

NWS STORM PREDICTION CENTER NORMAN OK

825 AM EDT WED APR 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN KENTUCKY

       EXTREME SOUTHWESTERN NORTH CAROLINA

       EASTERN TENNESSEE

       EXTREME SOUTHWESTERN VIRGINIA



EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 825 AM UNTIL

200 PM EDT.



TORNADOES...HAIL TO 1 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 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF

JACKSON KENTUCKY TO 65 MILES SOUTH SOUTHEAST OF CROSSVILLE

TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 225...WW 226...WW

227...WW 228...



DISCUSSION...LINE OF STORMS WILL CONTINUE EWD THROUGH ERN KY AND ERN

TN EARLY THIS MORNING. INSTABILITY IS MARGINAL...BUT STORMS ARE

WITHIN AN ENVIRONMENT CHARACTERIZED BY STRONG SHEAR PROFILES WITH

LARGE HODOGRAPHS SUPPORTIVE OF EMBEDDED MESOCYCLONES AND LEWP

STRUCTURES. DAMAGING WIND AND ISOLATED TORNADOES WILL REMAIN

POSSIBLE WITH THIS ACTIVITY NEXT FEW HOURS.



AVIATION...TORNADOES AND 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 26040.





...DIAL

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