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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 10 March 2026

Tonight and Wednesday.

Wind variable 10 to 15 knots becoming northeast 15 early Wednesday morning then veering to easterly 20 Wednesday evening.

Scattered flurries overnight. Snow Wednesday afternoon and evening. Visibility 1 mile or less in precipitation.

Temperatures plus 4 falling to minus 6 Wednesday evening.

Extended Forecast

Issued 03:30 PM ADT 10 March 2026
Thursday Wind southerly 25 to 30 knots.
Friday Wind west 30 knots diminishing to west 20.
Saturday Wind west 20 knots increasing to southeast 35 late in the day.

Ice Forecast

Issued 10:00 AM EDT 10 March 2026 Today Tonight and Wednesday 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 10 March 2026 Today Tonight and Wednesday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4603N 5814W to 4722N 5805W to 4643N 5628W 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 10 March 2026 Tonight and Wednesday At 3:30 p.m. ADT today building high located over James Bay.
By 8:00 p.m. ADT Wednesday departing ridge from high located from
Labrador to Newfoundland.

At 8:00 p.m. ADT tonight approaching low located west of the
Maritimes.

Marine Weather Statement

Issued 3:20 PM ADT 10 March 2026 Marine interests are advised that all gale warnings have been ended.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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