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SEL9 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 689 NWS Storm Prediction Center Norman OK 455 PM EDT Sun Oct 6 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western New York Eastern Ohio Western Pennsylvania Northern West Virginia Panhandle * Effective this Sunday afternoon and evening from 455 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail and isolated very large hail events to 2 inches in diameter possible SUMMARY...Scattered thunderstorms are forecast to continue to develop and intensify through the afternoon and into the evening across the Watch area. A few of the stronger thunderstorms will likely acquire supercell characteristics and pose an initial risk for large hail (1 to 2 inches in diameter) and localized severe gusts. Upscale growth into a mix of cells and linear segments this evening will facilitate the severe risk potentially becoming primarily a damaging wind threat (60 to 70 mph gusts) before this activity weakens late this evening. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 30 miles north of Buffalo NY to 35 miles south of Wheeling WV. 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. && 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 450. Mean storm motion vector 26040. ...Smith