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593 

WWUS20 KWNS 101927

SEL4

SPC WW 101927

NYZ000-OHZ000-PAZ000-WVZ000-LEZ000-LOZ000-110200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 474

NWS STORM PREDICTION CENTER NORMAN OK

330 PM EDT SAT SEP 10 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN NEW YORK

  NORTHERN AND EASTERN OHIO

  WESTERN PENNSYLVANIA

  NORTHERN PANHANDLE OF WEST VIRGINIA

  LAKE ERIE

  LAKE ONTARIO



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 330 PM UNTIL

  1000 PM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...LINE OF STORMS ALONG A COLD FRONT OVER WESTERN OHIO WILL

PROGRESS NORTHEAST ACROSS THE LOWER GREAT LAKES REGION THROUGH THIS

EVENING. STRONG TO ISOLATED SEVERE WIND GUSTS ARE EXPECTED...WHICH

MAY PRODUCE SCATTERED DAMAGING WINDS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH

SOUTHEAST OF MANSFIELD OHIO TO 30 MILES WEST NORTHWEST OF

ROCHESTER NEW YORK.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 473...



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION

VECTOR 23040.





...GRAMS

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