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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 September 2026

Today Tonight and Saturday.

Wind westerly 15 knots diminishing to light early this evening. Wind light Saturday.

Mist forming overnight and dissipating Saturday morning. Visibility as low as 1 mile in mist.

Extended Forecast

Issued 06:00 AM EDT 11 September 2026
Sunday Wind southwest 15 to 20 knots.
Monday Wind northwest 15 to 20 knots diminishing to light late in the day.
Tuesday Wind light becoming south 10 to 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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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 September 2026 Today Tonight and Saturday At 3:00 a.m. EDT today trough located on a line northwest-southeast
over Anticosti Island.
By 11:00 p.m. EDT tonight departing trough located off Newfoundland.

At 3:00 a.m. EDT today ridge located on a line north-south over
Lake Huron.
By 8:00 p.m. EDT Saturday departing ridge located on a line
north-south over Newfoundland.

At 4:00 a.m. EDT Saturday trough located on a line
northeast-southwest over Lake Superior.
By 8:00 p.m. EDT Saturday trough located on a line
northeast-southwest over Lake Huron.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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