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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 16 July 2026

Tonight and Friday.

Wind westerly 15 to 20 knots diminishing to westerly 10 to 15 early Friday evening.

Showers this evening with a risk of thunderstorms.

Extended Forecast

Issued 03:30 PM ADT 16 July 2026
Saturday Wind westerly 15 knots backing to southerly 15 in the afternoon.
Sunday Wind southerly 25 to 30 knots diminishing to west 20.
Monday Wind west 20 knots.

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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 - Quai de St-Jean 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 19 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 16 July 2026 Tonight and Friday At 8:00 p.m. ADT tonight quasi-stationary low located over Labrador.

At 8:00 p.m. ADT tonight trough located over Labrador to the Gulf
of Maine.
By 3:00 a.m. ADT Friday trough located from Newfoundland to East
Scotian Slope.

At 10:00 a.m. ADT Friday departing trough located east of the
Marine District.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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