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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 17 October 2026

Today Tonight and Sunday.

Strong wind warning in effect.

Wind northwest 30 knots diminishing to west 15 near noon Sunday and to light Sunday evening.

Scattered showers tonight.

Extended Forecast

Issued 03:00 AM ADT 17 October 2026
Monday Wind southwest 15 to 20 knots.
Tuesday Wind light becoming north 15 knots.
Wednesday Wind light.

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Map of St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport La Pocatière Miscou Island Mont-Joli Airport
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Northumberland Strait

Issued 10:00 AM ADT 17 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM ADT 17 October 2026 Today Tonight and Sunday At 10:00 a.m. ADT today low located over southeastern Labrador.
By 8:00 p.m. ADT tonight departing low located northeast of
Newfoundland.

At 3:00 a.m. ADT Sunday approaching ridge located over the Great
Lakes extending eastward.

Marine Weather Statement

Issued 9:55 AM ADT 17 October 2026 A low pressure system over Southeastern Labrador will continue moving
eastward today. Strong to gale force southerly winds will veer to
strong to gale force northwesterlies in its wake.

Marine interests are advised that gale warnings are in effect for
Banquereau, Laurentian Fan, Cabot Strait - northern half, Gulf -
Magdalen, Chaleur - Miscou, and Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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