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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 09 March 2026

Tonight and Tuesday.

Wind southwest 15 knots increasing to southwest 25 early this evening then diminishing to west 15 Tuesday morning. Wind becoming variable 10 to 15 Tuesday afternoon.

Extended Forecast

Issued 03:30 PM ADT 09 March 2026
Wednesday Wind northeasterly 20 to 25 knots.
Thursday Wind southerly 25 to 30 knots.
Friday Wind west 30 knots diminishing to west 20.

Ice Forecast

Issued 10:00 AM EDT 9 March 2026 Today Tonight and Tuesday 7 tenths first-year ice. 

[ 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 EDT 9 March 2026 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4600N 5749W to 4708N 5834W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

7 tenths first-year ice.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 9 March 2026 Tonight and Tuesday At 3:30 p.m. ADT today trough located over the Great Lakes.
By 8:00 p.m. ADT tonight approaching trough located over Quebec.

At 3:00 a.m. ADT Tuesday trough located over the St. Lawrence River.
By 10:00 a.m. ADT Tuesday departing trough located over southeastern
Labrador.

Marine Weather Statement

Issued 3:18 PM ADT 9 March 2026 A trough of low pressure over the Great Lakes will move eastward
tonight passing just north of the marine district Tuesday morning.
Increasing southwesterly winds will reach strong to gale force ahead
of the trough. Diminishing winds are expected through the day Tuesday
as the trough pulls away and a weak ridge builds into the district.

Marine interests are advised that a gale warning is in effect for
Anticosti - northwestern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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