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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 09 May 2026

Tonight and Sunday.

Strong wind warning in effect.

Wind southeast 15 to 25 knots veering to southwest 15 to 25 late overnight then diminishing to southwest 10 to 15 Sunday evening.

Showers overnight. Scattered showers Sunday evening.

Extended Forecast

Issued 06:00 AM EDT 09 May 2026
Monday Wind light.
Tuesday Wind light.
Wednesday Wind easterly 10 to 20 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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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 09 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 9 May 2026 Tonight and Sunday At 3:00 p.m. EDT today intensifying ridge located from Newfoundland
to Labrador.
By 8:00 p.m. EDT Sunday ridge located on a line northeast-southwest
over eastern Newfoundland.

At 3:00 p.m. EDT today low 999 mb located over western Quebec.
By 8:00 p.m. EDT Sunday low 999 mb located at 54.5N 73.5W.

At 3:00 p.m. EDT today cold front from low located on a line
northeast-southwest over Toronto.
By 8:00 p.m. EDT Sunday cold front from low located on a line
northeast-southwest over Matane.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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