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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 March 2026

Today Tonight and Friday.

Gale warning in effect.

Wind northeast 15 knots increasing to southwest 30 to 40 early this morning then diminishing to west 15 to 25 early this afternoon. Wind diminishing to light this evening. Wind light Friday.

Freezing rain early this morning changing to scattered flurries and ending near noon. Visibility as low as 1 mile in flurries.

High today zero. Low tonight minus 9. High Friday minus 2.

Extended Forecast

Issued 06:00 AM EDT 12 March 2026
Saturday Wind northeast 15 to 25 knots becoming west 15 to 25 in the afternoon.
Sunday Wind light increasing to northeast 15 to 25 knots late in the day.
Monday Wind northeast 15 to 25 knots veering to southeast 20 to 30.

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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)

Gale warning in effect

Trois-Rivières to Donnacona

Issued 03:00 AM EDT 12 March 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 AM EDT 12 March 2026 Today Tonight and Friday At 3:00 a.m. EDT today low 995 mb located near Montréal.
By 8:00 p.m. EDT Friday low 963 mb located over Labrador Sea.

At 3:00 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 8:00 p.m. EDT Friday ridge located on a line northwest-southeast
over Rivière-du-Loup.

At 8:00 p.m. EDT Friday approaching low 995 mb located over
Lake Huron.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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