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Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 18 February 2026

Tonight and Thursday.

Wind northerly 20 knots backing to northwest 10 to 15 late Thursday morning then becoming light Thursday evening.

Waves

Issued 05:00 PM AST 18 February 2026
Tonight and Thursday. Seas 1 to 2 metres subsiding to 1 or less early Thursday afternoon.

Extended Forecast

Issued 03:30 PM AST 18 February 2026
Friday Wind light becoming easterly 15 knots in the afternoon.
Saturday Wind northerly 25 knots diminishing to northeast 15.
Sunday Wind northeasterly 20 knots.

Ice Forecast

Issued 10:00 AM EST 18 February 2026 Today Tonight and Thursday Open water. Consolidated grey-white ice in a few sheltered bays. 

[ Canadian Ice Service ]

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 18 February 2026 Today Tonight and Thursday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4600N 5845W to 4715N 5915W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

Open water. Consolidated grey-white ice in a few sheltered bays.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM AST 18 February 2026 Tonight and Thursday At 8:00 p.m. AST tonight trough located from Nova Scotia to New
Brunswick.
By 3:00 a.m. AST Thursday dissipating trough located over the
eastern Marine District.

At 3:30 p.m. AST Thursday ridge located west of the Marine District.

Marine Weather Statement

Issued 3:17 PM AST 18 February 2026 Marine interests are advised that gale warnings are ended.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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