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Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 20 July 2025

Tonight and Monday.

Strong wind warning in effect.

Wind southwest 15 knots diminishing to light this evening then increasing to northwest 15 Monday morning. Wind increasing to northwest 25 Monday afternoon.

Showers and fog patches tonight and Monday.

Waves

Issued 05:00 AM ADT 20 July 2025
Today Tonight and Monday. Seas 1 metre.

Extended Forecast

Issued 03:30 PM ADT 20 July 2025
Tuesday Wind northwest 15 to 20 knots backing to westerly 15 in the afternoon.
Wednesday Wind light.
Thursday Wind light increasing to southwest 15 to 20 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

Ice Forecasts

Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Lurcher

Issued 3:30 PM ADT 20 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.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 20 July 2025 Tonight and Monday At 3:30 p.m. ADT today trough located over the Gaspe Peninsula.
By 10:00 a.m. ADT Monday trough located from Anticosti Island to
East Scotian Slope.

At 3:30 p.m. ADT Monday trough located on a line north-south over
the eastern Marine District.

At 3:30 p.m. ADT today ridge located over the southeastern Marine
District.
By 8:00 p.m. ADT tonight departing ridge located over the Grand
Banks.

Marine Weather Statement

Issued 3:23 PM ADT 20 July 2025 A trough of low pressure will pass through the region on Monday and
intensify. In its wake on Monday evening the potential exists for
gale force northwesterlies for the eastern marine district, including
the Gulf of St. Lawrence regions.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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