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Montréal to Trois-Rivières

Warnings

Forecast

Marine Forecast

Issued 05:47 AM EDT 17 July 2025

Today Tonight and Friday.

Strong wind warning in effect.

Wind light with gusts to 50 knots near thunderstorms early this afternoon. Wind becoming southwest 20 to 30 this afternoon with gusts to 50 near thunderstorms. Wind becoming northwest 15 to 25 this evening then becoming westerly 15 Friday morning.

Showers ending this evening with a risk of thunderstorms. Visibility 1 mile or less in showers.

Extended Forecast

Issued 06:00 AM EDT 17 July 2025
Saturday Wind southwest 10 to 15 knots increasing to southwest 15 to 20 in the morning.
Sunday Wind southwest 10 to 15 knots veering to northwest 10 to 15.
Monday Wind northwest 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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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Montréal to Trois-Rivières

Issued 05:47 AM EDT 17 July 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.

Watches (In effect)

Squall watch in effect

Montréal to Trois-Rivières

Issued 05:53 AM EDT 17 July 2025 This afternoon and this evening, conditions will be favourable for the development of squalls with wind gusts up to 50 knots and frequent lightning.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 17 July 2025 Today Tonight and Friday At 3:00 a.m. EDT today low 1004 mb located over Lake Huron.
By 8:00 p.m. EDT Friday low 988 mb located over Labrador.

At 3:00 a.m. EDT today high located south of Manitoba.
By 8:00 p.m. EDT Friday high located over Lake Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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