NWS Boston/Norton MAMA.W 0046September 4, 2026
Special Marine Warning: Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island,
The National Weather Service office in Boston/Norton issued a special marine warning for Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island, Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM and 1 more, which was in force until 5:00 a.m. local time on September 4. It was the 46th special marine warning the NWS office in Boston/Norton issued in 2026.
ExpiredWarning
In force for 58 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Boston/Norton MA
- Area
- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island, Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM and 1 more
- Level
- Warning
- Issued
- 4:02 a.m. EDT, September 4, 2026
- Expires
- 5:00 a.m. EDT, September 4, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KBOX MA.W 0046
- Official source
- National Weather Service: the notice at its source
NWS notices, September 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
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 Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island... Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM... Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM... * Until 500 AM EDT. * At 402 AM EDT, a severe thunderstorm capable of producing waterspouts was located 10 nm southwest of The Coastal Waters South Of Marthas Vineyard, moving southeast 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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.