

000 

WWUS20 KWNS 062335

SEL7

SPC WW 062335

INZ000-OHZ000-LEZ000-070500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 477

NWS STORM PREDICTION CENTER NORMAN OK

735 PM EDT FRI JUN 6 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SMALL PART OF EAST CENTRAL INDIANA

       LARGE PART OF NORTHWEST OHIO

       LAKE ERIE



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 735 PM

UNTIL 100 AM 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 60

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

NORTHEAST OF FINDLAY OHIO TO 20 MILES EAST SOUTHEAST OF DAYTON

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 473...WW 475...WW 476...



DISCUSSION...LINE OF SEVERE THUNDERSTORMS CONTINUE TO MOVE VERY

RAPIDLY EWD ACROSS CENTRAL INDIANA ACCOMPANIED BY DAMAGING WINDS.

WHILE AIR MASS INTO OH A LITTLE LESS UNSTABLE...THE STEEP LAPSE

RATES  AND STRONG DEEP LAYER SHEAR SHOULD SUPPORT DAMAGING WINDS FOR

SEVERAL MORE HOURS AS THE LINE MOVES INTO NWRN OH.



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 24045.





...HALES

