WW 277 SEVERE TSTM NH NY VT LO 171635Z – 180000Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 277 NWS Storm Prediction Center Norman OK 1235 PM EDT Sat May 17 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western New Hampshire Central and Northern New York Vermont Lake Ontario * Effective this Saturday afternoon and evening from 1235 PM until 800 PM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible Scattered large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...Scattered strong to severe thunderstorms will increase in coverage through the afternoon. Locally damaging winds are the main concern, but the strongest cells could also produce large hail and perhaps a tornado. The severe thunderstorm watch area is approximately along and 75 statute miles north and south of a line from 30 miles east southeast of Montpelier VT to 5 miles south of Rochester NY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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 1.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26030. ...Hart