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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 09 September 2026

Tonight and Thursday.

Strong wind warning in effect.

Wind light increasing to southwest 20 knots late this evening and to west 20 to 30 Thursday morning. Wind diminishing to westerly 15 Thursday evening.

Showers tonight. Scattered showers Thursday. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 09 September 2026
Friday Wind northwest 15 knots diminishing to light late in the day.
Saturday Wind light becoming southwest 15 knots late in the day.
Sunday Wind southwest 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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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Donnacona to Beauport

Issued 3:00 PM EDT 09 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 PM EDT 9 September 2026 Tonight and Thursday At 3:00 p.m. EDT today ridge located from New England to Ungava Bay.
By 11:00 p.m. EDT tonight departing ridge located over Newfoundland.

At 3:00 p.m. EDT today trough located from James Bay to the
Great Lakes.
By 8:00 p.m. EDT Thursday trough located from Labrador to Nova
Scotia.

At 8:00 a.m. EDT Thursday ridge located over northwestern Ontario.
By 8:00 p.m. EDT Thursday ridge located on a line north-south over
Lake Huron.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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