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Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 16 July 2025

Tonight and Thursday.

Wind light increasing to southerly 10 to 15 knots this evening and to south 15 to 20 Thursday afternoon.

Showers overnight and Thursday with a risk of thunderstorms. Fog patches.

Waves

Issued 05:00 AM ADT 16 July 2025
Today Tonight and Thursday. Seas 1 metre.

Extended Forecast

Issued 03:30 PM ADT 16 July 2025
Friday Wind southerly 15 knots becoming northwest 15 in the afternoon.
Saturday Wind light.
Sunday Wind light.

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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

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 3:30 PM ADT 16 July 2025 Tonight and Thursday At 3:30 p.m. ADT today low 1008 mb located over the St. Lawrence
River.
By 10:00 a.m. ADT Thursday weakening low 1011 mb located northeast
of the Marine District.

At 10:00 a.m. ADT Thursday low 1004 mb located near the Great Lakes.
By 8:00 p.m. ADT Thursday low 1000 mb located near the St. Lawrence
River.

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

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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