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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 10 September 2026

Today Tonight and Friday.

Strong wind warning in effect.

Wind southwest 15 to 20 knots increasing to west 20 to 30 early this morning then diminishing to westerly 15 this evening. Wind diminishing to light near midnight then becoming west 10 to 15 near noon Friday.

Scattered showers ending this evening.

Extended Forecast

Issued 06:00 AM EDT 10 September 2026
Saturday Wind light increasing to southwest 15 to 20 knots late in the day.
Sunday Wind southwest 15 to 20 knots.
Monday Wind northwest 15 to 20 knots diminishing to light late in the day.

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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

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Donnacona to Beauport

Issued 03:00 AM EDT 10 September 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 10 September 2026 Today Tonight and Friday At 3:00 a.m. EDT today trough located on a line north-south over
Tadoussac.
By 8:00 a.m. EDT Friday trough located on a line north-south over
the Strait of Belle Isle.

At 8:00 a.m. EDT today ridge located over northwestern Ontario.
By 8:00 p.m. EDT Friday ridge located on a line north-south over
Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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