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NWS Buffalo NYMA.W 0052June 30, 2026

Special Marine Warning: St. Lawrence River above Ogdensburg NY and St. Lawrence River from Ogdensburg to St. Regis NY

The National Weather Service office in Buffalo issued a special marine warning for St. Lawrence River above Ogdensburg NY and St. Lawrence River from Ogdensburg to St. Regis NY, which was in force until 11:15 p.m. local time on June 30. It was the 52nd special marine warning the NWS office in Buffalo issued in 2026.

ExpiredWarning

Issued10:10 p.m. EDT, June 30, 2026
In force10:10 p.m. EDT, June 30, 2026
Expired11:15 p.m. EDT, June 30, 2026

In force for 1.1 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Buffalo NY
Area
St. Lawrence River above Ogdensburg NY and St. Lawrence River from Ogdensburg to St. Regis NY
Level
Warning
Issued
10:10 p.m. EDT, June 30, 2026
Expires
11:15 p.m. EDT, June 30, 2026
CAP severity, certainty, urgency
Severe, Likely, Immediate
VTEC event
KBUF MA.W 0052
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... The Saint Lawrence River from Clayton to Saint Regis... * Until 1115 PM EDT. * At 1009 PM EDT, strong thunderstorms were located along a line extending from 34 nm northwest of Tucker Terrace to 28 nm north of Wellesley Island to 22 nm north of Tibbets Point, moving east at 45 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... Alexandria Bay, Tucker Terrace, Wellesley Island, 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