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Marine Forecast

Issued 03:00 AM AST 18 November 2025

Today Tonight and Wednesday.

Wind westerly 25 knots diminishing to westerly 15 near midnight and to light Wednesday evening.

Waves

Issued 05:00 AM AST 18 November 2025
Today Tonight and Wednesday. Seas 2 to 3 metres subsiding to 1 to 2 this evening and to 1 or less Wednesday evening.

Extended Forecast

Issued 03:00 AM AST 18 November 2025
Thursday Wind light.
Friday Wind light increasing to southerly 25 knots late in the day.
Saturday Wind west 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 Montréal Metropolitain 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

Ice Forecasts

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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM AST 18 November 2025 Today Tonight and Wednesday At 3:00 a.m. AST today low 978 mb located over Labrador.
By 3:00 a.m. AST Wednesday low 983 mb located over Labrador.

At 8:00 p.m. AST Wednesday departing low 989 mb located north
of Labrador.

At 8:00 p.m. AST Wednesday approaching ridge located over New
England.

Marine Weather Statement

Issued 2:46 AM AST 18 November 2025 A low pressure system over Labrador will move very slowly north today
and Wednesday. Strong to gale force westerly winds are expected to
persist over Anticosti in the wake of the low.

Marine interests are advised that a gale warning is in effect for
Anticosti - western half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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