

543 

WWUS20 KWNS 241437

SEL8

SPC WW 241437

INZ000-KYZ000-OHZ000-241900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 508

NWS STORM PREDICTION CENTER NORMAN OK

1035 AM EDT TUE JUL 24 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST INDIANA

       NORTHEAST KENTUCKY

       SOUTHWEST OHIO



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 1035 AM UNTIL

300 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 50

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

NORTHWEST OF DAYTON OHIO TO 65 MILES SOUTHEAST OF CINCINNATI

OHIO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 507...



DISCUSSION...A FAST MOVING CLUSTER OF THUNDERSTORMS OVER NORTHERN

IND HAS A HISTORY OF DAMAGING WINDS.  THIS ACTIVITY IS FORECAST TO

TRACK SOUTHEASTWARD ACROSS THE WATCH AREA THROUGH THE LATE MORNING

AND EARLY AFTERNOON HOURS.  WIDESPREAD CLOUDS ARE LIMITING

CONFIDENCE IN THE DEGREE OF DESTABILIZATION...BUT FAST STORM MOTION

AND FAVORABLE MID LEVEL LAPSE RATES WARRANT CONCERN FOR SEVERE WINDS

AT LEAST AS FAR SOUTHEAST AS THE OH RIVER.



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 500. MEAN STORM

MOTION VECTOR 31045.





...HART

