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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM AST 18 February 2026

Tonight and Thursday.

Wind variable 10 to 15 knots becoming northerly 15 early this evening. Wind northerly 15 Thursday.

Periods of snow ending Thursday morning. Visibility as low as 1 mile in snow.

Temperatures near minus 2.

Extended Forecast

Issued 03:30 PM AST 18 February 2026
Friday Wind variable 10 to 15 knots.
Saturday Wind northerly 15 knots increasing to northerly 25.
Sunday Wind north 20 knots.

Ice Forecast

Issued 10:00 AM EST 18 February 2026 Today Tonight and Thursday 9 tenths grey-white ice including 3 tenths first-year ice. Consolidated first-year ice along parts of the coasts. 

[ Canadian Ice Service ]

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Weather Conditions

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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

9 tenths grey-white ice including 3 tenths first-year ice.
Consolidated first-year ice along parts of the coasts.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM AST 18 February 2026 Tonight and Thursday At 3:30 p.m. AST today trough located from New Brunswick to
Nova Scotia.
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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