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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 22 June 2025

Today Tonight and Monday.

Strong wind warning in effect.

Wind west 15 to 20 knots diminishing to light early this evening then increasing to southwest 15 to 25 Monday afternoon.

Showers ending this morning with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 22 June 2025
Tuesday Wind southwest 15 to 25 knots.
Wednesday Wind northwest 15 knots veering to northeast 10 to 15 late in the day.
Thursday Wind northeast 10 to 15 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Saint-Hubert Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts 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 Miscou Island Kouchibouguac La Pocatière
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 03:00 AM EDT 22 June 2025

'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 AM EDT 22 June 2025 Today Tonight and Monday At 3:00 a.m. EDT today departing ridge located from Labrador to
Nova Scotia.

At 3:00 a.m. EDT today low 1002 mb located south of James Bay.
By 8:00 p.m. EDT tonight weakening low 1010 mb located over New
Brunswick.

At 3:00 a.m. EDT today warm front located on a line east-west over
the Great Lakes.
By 8:00 p.m. EDT Monday warm front located from James Bay to
Saguenay River.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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