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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 11 July 2026

Tonight and Sunday.

Wind light becoming southwest 15 knots Sunday evening.

Scattered showers ending this evening with a risk of thunderstorms.

Waves

Issued 03:00 PM EDT 11 July 2026
Tonight and Sunday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 AM EDT 11 July 2026
Monday Wind southwest 15 knots increasing to southwest 15 to 25 in the morning.
Tuesday Wind southwest 15 knots.
Wednesday Wind westerly 15 to 20 knots.

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

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 11 July 2026 Tonight and Sunday At 3:00 p.m. EDT today ridge located on a line north-south over
James Bay.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over the Strait of Belle Isle.

At 2:00 a.m. EDT Sunday trough located on a line north-south over
northern Ontario.
By 8:00 p.m. EDT Sunday trough located on a line northeast-southwest
over western Quebec.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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