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Forecast

Marine Forecast

Issued 10:00 AM ADT 11 August 2026

Today Tonight and Wednesday.

Wind light increasing to southwest 10 to 15 knots near noon and to west 15 to 20 late this afternoon. Wind diminishing to northwest 10 to 15 late overnight and to light Wednesday morning.

Scattered showers this morning with a risk of thunderstorms.

Waves

Issued 05:00 AM ADT 11 August 2026
Today Tonight and Wednesday. Seas 1 metre.

Extended Forecast

Issued 03:00 AM ADT 11 August 2026
Thursday Wind light increasing to southwest 15 to 20 knots in the afternoon.
Friday Wind west 20 knots.
Saturday Wind northwest 20 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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land station Land Station
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 10:00 AM ADT 11 August 2026 Today Tonight and Wednesday At 10:00 a.m. ADT today trough located over New Brunswick.
By 8:00 p.m. ADT tonight trough located from the Gulf of
St. Lawrence to East Scotian Slope.

At 8:00 p.m. ADT Wednesday departing trough located over the
Grand Banks.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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