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104 

WWUS20 KWNS 271701

SEL6

SPC WW 271701

INZ000-KYZ000-TNZ000-280100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 566

NWS STORM PREDICTION CENTER NORMAN OK

1200 PM CDT MON JUN 27 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR SOUTHERN INDIANA

       WESTERN AND CENTRAL KENTUCKY

       NORTHERN-MIDDLE TENNESSEE



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM NOON UNTIL 800

PM CDT.



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 95

STATUTE MILES EAST AND WEST OF A LINE FROM 80 MILES EAST

NORTHEAST OF OWENSBORO KENTUCKY TO 30 MILES SOUTH SOUTHEAST OF

CLARKSVILLE TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...TRAILING-STRATIFORM MCS OVER THE LOWER OH VALLEY IS

EXPECTED TO INTENSIFY THIS AFTERNOON AS IT INTERACTS WITH A MOIST

AND MODERATELY UNSTABLE INFLOW AIR MASS WITH MLCAPE OF 2000-2500

J/KG.  AREA VAD/PROFILER DATA INDICATE THE PRESENCE OF 40-45 KT WLY

FLOW IN THE MIDLEVELS...RESULTING IN AROUND 40 KT OF WLY DEEP-LAYER

SHEAR.  AS SUCH...GIVEN ENVIRONMENT APPEARS SUPPORTIVE OF THE

ACCELERATION/FORWARD-PROPAGATION OF MCS WITH ATTENDANT THREATS FOR

DAMAGING WINDS AND HAIL.



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 27035.





...MEAD

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