WATCHES: Severe Thunderstorm Watch Number 510

WWUS20 KWNS 251808
SEL0
SPC WW 251808
INZ000-MIZ000-OHZ000-PAZ000-LEZ000-LHZ000-260200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 510
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT THU JUN 25 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

NORTHEAST INDIANA
SOUTHERN MICHIGAN
NORTHERN INTO CENTRAL OHIO
FAR NORTHWEST PENNSYLVANIA
LAKE ERIE
LAKE HURON

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 210 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 105
STATUTE MILES NORTH AND SOUTH OF A LINE FROM KALAMAZOO MICHIGAN
TO 20 MILES EAST SOUTHEAST OF YOUNGSTOWN OHIO. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU0).

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 508...WW 509...

DISCUSSION...SEVERAL CLUSTERS/AREAS OF SEVERE THUNDERSTORMS EXPECTED
TO EVOLVE ACROSS WW THROUGH THIS EVENING WITHIN LARGE RESERVOIR OF
MODERATE TO STRONG INSTABILITY AND MODEST DEEP LAYER SHEAR.
DAMAGING WINDS AND LARGE HAIL WILL BE COMMON WITH THE MORE INTENSE
CORES AS ACTIVITY MOVE ESEWD THROUGH THE EVENING.

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 28020.

...EVANS

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.