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Warnings

Forecast

Marine Forecast

Issued 03:00 AM AST 18 February 2026

Today Tonight and Thursday.

Wind southwesterly 20 knots veering to northwest 20 to 25 near noon then diminishing to northerly 15 Thursday morning.

Flurries or showers ending early this morning. Visibility 1 mile or less in precipitation.

Temperatures near plus 1.

Waves

Issued 05:00 AM AST 18 February 2026
Today Tonight and Thursday. Seas 1 metre.

Extended Forecast

Issued 03:00 AM AST 18 February 2026
Friday Wind light.
Saturday Wind northerly 25 knots diminishing to northeast 15.
Sunday Wind northeast 15 knots.

Ice Forecast

Issued 10:00 AM EST 17 February 2026 Today Tonight and Wednesday Open water except 9 tenths grey-white ice along parts of the coast in the eastern section. 

[ 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 17 February 2026 Today Tonight and Wednesday

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 except 9 tenths grey-white ice along parts of the coast
in the eastern section.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM AST 18 February 2026 Today Tonight and Thursday At 3:00 a.m. AST today low 967 mb located over the southern
Grand Banks.
By 3:30 p.m. AST today departing low 966 mb located over the
northeastern Grand Banks.

At 3:00 a.m. AST today trough located from New Brunswick to the
Gulf of Maine.
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 2:46 AM AST 18 February 2026 An intense low pressure system over the Southern Grand Banks will
continue moving northeastward into the Labrador Sea tonight. Gale to
storm force northerlies over extreme eastern waters diminish to
strong to gale force westerlies this morning. Strong northerlies will
persist for most of the region until Thursday afternoon when a ridge
of high pressure moves in from the west.

Marine interests are advised that storm warnings are in effect for
Banquereau - southeastern half and Laurentian Fan - eastern half.
Gale warnings are in effect for Banquereau - northwestern half and
Laurentian Fan - western half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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