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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 482

NWS STORM PREDICTION CENTER NORMAN OK

250 PM EDT SUN JUL 8 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN INDIANA

       NORTHERN AND CENTRAL KENTUCKY

       SOUTHERN OHIO



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 250 PM UNTIL

1000 PM EDT.



HAIL TO 2 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHEAST

OF JACKSON KENTUCKY TO 55 MILES SOUTH SOUTHWEST OF BLOOMINGTON

INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 481...



DISCUSSION...STORMS CONTINUE TO DEVELOP NEAR THE FRONT FROM SRN

INDIANA INTO EXTREME SRN OH AND NRN KY WITHIN A VERY WARM AND

UNSTABLE ENVIRONMENT /MLCAPE OF 3000-3500 J PER KG/.  ALTHOUGH FLOW

ALOFT IS MODEST AT BEST...CONVECTIVE SCALE ORGANIZATION IS APPARENT

WITH COMPLEX OVER SRN INDIANA WHICH IS PROPAGATING EWD.  OUTFLOW

BOUNDARY INTERACTIONS WILL ALSO RESULT IN ADDITIONAL STORMS...WITH

STRONGER CELLS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 28015.





...WEISS

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