Special Marine Warning for Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM; Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket; Ocean Waters from Provincetown to Nantucket from 20 to 60 NM +1 more

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SMWBOX The National Weather Service in Boston/Norton has issued a * Special Marine Warning for... Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket... Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM... Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM... Ocean Waters from Provincetown to Nantucket from 20 to 60 NM... * Until 815 PM EST. * At 710 PM EST, a severe thunderstorm capable of producing waterspouts was located 36 nm southeast of The Coastal Waters South Of Nantucket, moving northeast at 25 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The severe thunderstorm will remain over mainly open waters.