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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 26 October 2026

Tonight and Tuesday.

Wind northwest 15 knots diminishing to light this evening. Wind light Tuesday.

Low tonight zero. High Tuesday plus 7.

Extended Forecast

Issued 06:00 AM EDT 26 October 2026
Wednesday Wind light.
Thursday Wind light becoming southwest 10 to 15 knots.
Friday Wind southwest 10 to 15 knots veering to northwest 10 to 15.

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Map of St. Lawrence - St. Lawrence River marine weather areas Mistook Jonquière CFB Bagotville Bathurst Airport Cap-Chat Charlo Île Bicquette Miramichi Port Menier Pointe-au-Père Montréal Metropolitain Airport Fundy Park (Alma) Normandin Roberval Airport L'Isle-aux-Grues Trois-Rivières Airport L'Assomption Île-d'Orléans - Quai de St-Jean Deschambault Beauport North Bay Airport Lake Nipissing - 45152 Bas Caraquet New Carlisle Montréal-Trudeau Int'l Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Saint-Anicet Baie-Comeau Airport Lac Saint-Pierre Cap-Rouge Île Rouge Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts North Cape Pointe-Noire Cap-d'Espoir Brier Island Yarmouth Airport Rivière-la-Madeleine St. Stephen Gaspé Airport Grand Manan Kouchibouguac Mont-Joli Airport Saint John Airport Miscou Island La Pocatière Greater Moncton Roméo LeBlanc Int'l Airport Point Lepreau
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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 PM EDT 26 October 2026 Tonight and Tuesday At 3:00 p.m. EDT today trough located from the Strait of Belle
Isle to Lake Ontario.
By 8:00 p.m. EDT tonight departing trough located on a line
northeast-southwest over Nova Scotia.

At 3:00 p.m. EDT today high 1037 mb located over Manitoba.
By 8:00 p.m. EDT Tuesday high 1033 mb located over southern Quebec.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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