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NWS Buffalo NYMA.W 0047June 30, 2026

Special Marine Warning: Mexico Bay NY to the St. Lawrence River, Mexico Bay NY to the St. Lawrence River beyond 5NM off shoreline to US-Canadian border, St. Lawrence River above Ogdensburg NY and 1 mo

The National Weather Service office in Buffalo issued a special marine warning for Mexico Bay NY to the St. Lawrence River, Mexico Bay NY to the St. Lawrence River beyond 5NM off shoreline to US-Canadian border, St. Lawrence River above Ogdensburg NY and 1 more, which was in force until 1:45 p.m. local time on June 30. It was the 47th special marine warning the NWS office in Buffalo issued in 2026.

ExpiredWarning

Issued11:44 a.m. EDT, June 30, 2026
In force11:44 a.m. EDT, June 30, 2026
Expired1:45 p.m. EDT, June 30, 2026

In force for 2 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Buffalo NY
Area
Mexico Bay NY to the St. Lawrence River, Mexico Bay NY to the St. Lawrence River beyond 5NM off shoreline to US-Canadian border, St. Lawrence River above Ogdensburg NY and 1 more
Level
Warning
Issued
11:44 a.m. EDT, June 30, 2026
Expires
1:45 p.m. EDT, June 30, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KBUF MA.W 0047
Official source
National Weather Service: the notice at its source

NWS notices, June 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

SMWBUF The National Weather Service in Buffalo has issued a * Special Marine Warning for... Lake Ontario from Gallo Island to Cape Vincent... The Saint Lawrence River from Cape Vincent to Saint Regis... * Until 145 PM EDT. * At 1141 AM EDT, a strong thunderstorm was located over mainly rural areas of Arden Ontario, moving southeast at 35 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Tibbets Point, Alexandria Bay, Tucker Terrace, Wellesley Island, St. Lawrence River, Cape Vincent, and Clayton.

What the agency told people to do

Move to safe harbor immediately as gusty winds and high waves are expected.

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.

The record around this notice