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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:27 AM EDT 11 August 2026

Today Tonight and Wednesday.

Wind light becoming west 15 knots this morning then diminishing to light this evening. Wind becoming west 10 to 15 Wednesday morning then becoming light Wednesday evening.

Showers early this morning with a risk of thunderstorms. Scattered showers this afternoon and this evening with a risk of thunderstorms. Scattered showers Wednesday afternoon and evening with a risk of thunderstorms.

Extended Forecast

Issued 06:00 AM EDT 11 August 2026
Thursday Wind light becoming southwest 10 to 15 knots in the morning.
Friday Wind light becoming northwest 10 to 15 knots.
Saturday Wind light.

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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

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 11 August 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today departing trough located from Labrador to
the Quebec Lower North Shore.

At 3:00 a.m. EDT today low 1007 mb located near Lake Saint-Jean.
By 8:00 p.m. EDT Wednesday low 997 mb located over the Quebec
Lower North Shore.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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