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WWUS20 KWNS 031401

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KYZ000-TNZ000-VAZ000-032100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 721

NWS STORM PREDICTION CENTER NORMAN OK

1000 AM EDT WED AUG 3 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN KENTUCKY

       NORTHEAST TENNESSEE

       FAR WESTERN VIRGINIA



EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 1000 AM UNTIL

500 PM EDT.



HAIL TO 1.5 INCHES 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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES EAST

NORTHEAST OF LEXINGTON KENTUCKY TO 70 MILES WEST SOUTHWEST OF

BRISTOL TENNESSEE.  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.



DISCUSSION...BOWING MCS HAS RECENTLY INTENSIFIED WITH WIND DAMAGE

REPORTED IN LEX.  THE COMBINATION OF ENHANCED INFLOW ON WRN FLANK OF

SYSTEM BY A 40 KT LLJ AND A 40-50 KT REAR-INFLOW JET /PER ILN VAD

OBSERVATIONS/ SHOULD MAINTAIN THE SWD PROPAGATION OF MCS TODAY WITH

A CONTINUED THREAT FOR DAMAGING WINDS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 35030.





...MEAD

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