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Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 08 August 2026

Tonight and Sunday.

Wind light becoming southwest 10 to 15 knots Sunday afternoon.

Scattered showers ending overnight with a risk of thunderstorms. Fog patches.

Waves

Issued 05:00 PM ADT 08 August 2026
Tonight and Sunday. Seas 1 metre or less building to 1 to 2 Sunday morning.

Extended Forecast

Issued 03:30 PM ADT 08 August 2026
Monday Wind westerly 10 to 15 knots.
Tuesday Wind southwest 15 knots.
Wednesday Wind northwest 15 knots backing to southwest 20.

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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 8 August 2026 Tonight and Sunday At 8:00 p.m. ADT tonight trough located over New England.
By 3:00 a.m. ADT Sunday trough located from Maine to Nova Scotia.

At 8:00 p.m. ADT Sunday trough located from Nova Scotia to
Laurentian Fan.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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