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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 11 October 2026

Today Tonight and Monday.

Strong wind warning in effect.

Wind light increasing to southwest 10 to 15 knots late this morning and to southwest 15 to 25 this afternoon. Wind becoming southwest 10 to 20 this evening then becoming light overnight. Wind increasing to northeast 15 to 25 Monday afternoon.

Periods of rain Monday afternoon and evening.

Extended Forecast

Issued 06:00 AM EDT 11 October 2026
Tuesday Wind northeast 15 to 25 knots.
Wednesday Wind northeast 15 to 25 knots diminishing to northwest 10 to 15.
Thursday Wind northwest 10 to 15 knots becoming 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

Warnings (In effect)

Strong wind warning in effect

Donnacona to Beauport

Issued 03:00 AM EDT 11 October 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 6:27 AM EDT 11 October 2026 Today Tonight and Monday At 3:00 a.m. EDT today ridge located on a line north-south over
Rivière-du-Loup.
By 3:00 p.m. EDT today weakening ridge located on a line north-south
over Nova Scotia.

At 3:00 p.m. EDT today trough located from Labrador to Lake
Superior.
By 8:00 p.m. EDT Monday trough located on a line east-west over
Cornwall.

At 3:00 a.m. EDT Monday ridge located from Hudson Bay to Labrador.
By 8:00 p.m. EDT Monday ridge located from Hudson Bay to New
Brunswick.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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