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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 October 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind light increasing to northeast 20 to 30 knots early this morning then diminishing to northerly 15 to 20 late this afternoon. Wind diminishing to northerly 10 to 15 near midnight then becoming light Tuesday morning.

Periods of rain ending near noon.

Waves

Issued 03:00 AM EDT 12 October 2026
Today Tonight and Tuesday. Seas 1 metre or less building to 2 this morning then subsiding to 1 or less overnight.

Extended Forecast

Issued 06:00 AM EDT 12 October 2026
Wednesday Wind light increasing to easterly 15 to 20 knots in the morning.
Thursday Wind northwest 15 to 25 knots.
Friday Wind light becoming east 15 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport La Pocatière Miscou Island Mont-Joli Airport
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 03:00 AM EDT 12 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 12 October 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today trough located on a line east-west over
Anticosti Island.
By 8:00 p.m. EDT tonight quasi-stationary trough located on a line
east-west over Lake Ontario.

At 3:00 a.m. EDT today ridge located from Hudson Bay to Labrador.
By 3:00 a.m. EDT Tuesday quasi-stationary ridge located on a line
northwest-southeast over New Brunswick.

At 3:00 p.m. EDT Tuesday departing ridge located on a line
northwest-southeast over New Brunswick.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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