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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 10 September 2026

Tonight and Friday.

Strong wind warning in effect.

Wind northwest 20 to 30 knots diminishing to northwest 10 to 20 this evening then becoming light late overnight. Wind increasing to west 10 to 20 late Friday morning then becoming light Friday evening.

Extended Forecast

Issued 06:00 PM EDT 10 September 2026
Saturday Wind light increasing to southwest 15 to 20 knots late in the day.
Sunday Wind southwest 15 to 20 knots.
Monday Wind northwest 15 to 20 knots diminishing to light 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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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 3:00 PM EDT 10 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 10 September 2026 Tonight and Friday At 3:00 p.m. EDT today trough located on a line northwest-southeast
over Anticosti Island.
By 8:00 a.m. EDT Friday departing trough located off Newfoundland.

At 3:00 p.m. EDT today ridge located from Lake Superior to
Hudson Bay.
By 8:00 p.m. EDT Friday ridge located from Montréal to Lake
Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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