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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 18 May 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind light increasing to southwest 10 to 15 knots Tuesday morning and to southwest 15 to 25 Tuesday afternoon.

Showers this afternoon and Tuesday. Fog banks overnight.

Extended Forecast

Issued 06:00 AM EDT 18 May 2026
Wednesday Wind southwest 15 to 25 knots veering to northwest 15 to 25 in the afternoon.
Thursday Wind northwest 10 to 15 knots.
Friday Wind light becoming southwest 10 to 15 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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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 3:00 PM EDT 18 May 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 18 May 2026 Tonight and Tuesday At 3:00 p.m. EDT today ridge located from Hudson Bay to Sept-Îles.
By 8:00 p.m. EDT Tuesday ridge located on a line northwest-southeast
over the Strait of Belle Isle.

At 3:00 p.m. EDT today low 1008 mb located north of the Great Lakes.
By 8:00 p.m. EDT Tuesday low 998 mb located west of Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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