WATCHES: Severe Thunderstorm Watch Number 409

WWUS20 KWNS 101955
SEL9
SPC WW 101955
NYZ000-PAZ000-LEZ000-LOZ000-110200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 409
NWS STORM PREDICTION CENTER NORMAN OK
355 PM EDT WED JUL 10 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN NEW YORK
CENTRAL PENNSYLVANIA
LAKE ERIE
LAKE ONTARIO

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 355 PM
UNTIL 1000 PM EDT.

* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 110
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST
NORTHWEST OF DUBOIS PENNSYLVANIA TO 75 MILES SOUTH SOUTHEAST OF
ROCHESTER NEW YORK. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 406...WW 407...WW 408...

DISCUSSION...SEVERE THUNDERSTORMS OVER NORTHERN OH AND SOUTHEAST
ONTARIO ARE EXPECTED TO TRACK EASTWARD ACROSS THE WATCH AREA THIS
AFTERNOON AND EVENING. MODERATE INSTABILITY COUPLED WITH FAVORABLE
WINDS ALOFT WILL LIKELY MAINTAIN A RISK OF DAMAGING WINDS AND HAIL
IN THE STRONGER STORMS AT LEAST UNTIL DARK.

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 25035.


...HART

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