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Northumberland Strait - western half

Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 17 February 2026

Tonight and Wednesday.

Wind light becoming southeasterly 15 knots near midnight then becoming variable 10 to 15 Wednesday morning. Wind becoming northerly 15 Wednesday evening.

Periods of snow overnight and Wednesday. Fog patches dissipating this evening. Visibility 1 mile or less in fog patches and in snow.

Temperatures near minus 2.

Extended Forecast

Issued 03:30 PM AST 17 February 2026
Thursday Wind northwest 15 to 20 knots.
Friday Wind variable 10 to 15 knots.
Saturday Wind variable 10 to 15 knots increasing to northerly 25.

Ice Forecast

Issued 10:00 AM EST 17 February 2026 Today Tonight and Wednesday 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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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

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 8:00 PM AST 17 February 2026 Tonight and Wednesday At 8:00 p.m. AST tonight low 959 mb located southeast of Laurentian
Fan.
By 3:00 a.m. AST Wednesday departing low 969 mb located over the
southern Grand Banks.

At 3:00 a.m. AST Wednesday trough located from New Brunswick to
the Gulf of Maine.
By 3:30 p.m. AST Wednesday trough located over the central Marine
District.

Marine Weather Statement

Issued 7:44 PM AST 17 February 2026 An intense low pressure system southeast of Laurentian will continue
moving northeastward this evening to lie over the Southern Grand
Banks overnight. Gale to storm force northeasterlies north of the low
will become strong to gale force northwesterlies in its wake.

Marine interests are advised that storm warnings are in effect for
East Scotian Slope - southeastern half, Banquereau - southeastern
half and Laurentian Fan. Gale warnings are in effect for Sable, East
Scotian Slope - northwestern half and Banquereau - northwestern half.

St. Lawrence - St. Lawrence River Area

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