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Forecast

Marine Forecast

Issued 03:00 AM ADT 23 June 2025

Today Tonight and Tuesday.

Wind light increasing to southwest 15 knots overnight and to southwest 15 to 20 Tuesday morning.

Scattered showers Tuesday evening. Fog patches.

Waves

Issued 05:00 AM ADT 23 June 2025
Today Tonight and Tuesday. Seas 1 metre or less.

Extended Forecast

Issued 03:00 AM ADT 23 June 2025
Wednesday Wind northerly 10 to 15 knots becoming variable 10 to 15 in the afternoon.
Thursday Wind light.
Friday Wind northeast 10 to 15 knots.

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Weather Conditions

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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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 23 June 2025 Today Tonight and Tuesday At 3:00 a.m. ADT today trough located from the Gulf of St. Lawrence
to Cape Cod.
By 3:30 p.m. ADT today trough located from Newfoundland to East
Scotian Slope.

At 8:00 p.m. ADT tonight trough located over southern Quebec.
By 8:00 p.m. ADT Tuesday trough from 998 mb low located over
Labrador to Cape Cod.

St. Lawrence - St. Lawrence River Area

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