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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 08 September 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind light becoming north 10 to 15 knots early this morning then becoming light near noon. Wind increasing to south 15 Wednesday afternoon and to southwest 25 Wednesday evening.

Scattered showers ending early this morning. Showers Wednesday.

Extended Forecast

Issued 06:00 AM EDT 08 September 2026
Thursday Wind southwest 15 to 25 knots veering to west 15 to 20 in the afternoon.
Friday Wind northwest 15 knots diminishing to light late in the day.
Saturday Wind light becoming south 15 knots 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

Trois-Rivières to Donnacona

Issued 03:00 AM EDT 08 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 8 September 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today ridge located from Lake Ontario to James Bay.
By 8:00 a.m. EDT Wednesday departing ridge located from the Gaspe
Peninsula to Labrador.

At 8:00 p.m. EDT Wednesday approaching trough from 981 mb low
located over Hudson Bay.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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