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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 September 2026

Today Tonight and Sunday.

Strong wind warning in effect.

Wind light increasing to southerly 10 to 15 knots early this afternoon and to southwest 15 to 25 Sunday morning. Wind becoming west 15 Sunday evening.

Scattered showers Sunday. Risk of thunderstorms Sunday morning and afternoon. Mist forming early this morning and dissipating late this morning. Visibility as low as 1 mile in mist.

Extended Forecast

Issued 06:00 AM EDT 12 September 2026
Monday Wind northwest 15 to 20 knots diminishing to light late in the day.
Tuesday Wind light becoming south 10 to 15 knots.
Wednesday Wind 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

Trois-Rivières to Donnacona

Issued 03:00 AM EDT 12 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 12 September 2026 Today Tonight and Sunday At 3:00 a.m. EDT today ridge located from Lake Saint-Jean to
Cape Hatteras.
By 8:00 a.m. EDT Sunday departing ridge located off Newfoundland.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over Lake Superior.
By 8:00 p.m. EDT Sunday trough located on a line northeast-southwest
over Pointe-des-Monts.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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