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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 11 October 2026

Tonight and Monday.

Strong wind warning in effect.

Wind southwest 25 to 30 knots becoming northeast 30 near noon Monday.

Showers Monday afternoon and evening.

Extended Forecast

Issued 03:30 PM ADT 11 October 2026
Tuesday Wind northeast 20 knots.
Wednesday Wind southeast 30 knots.
Thursday Wind northwest 30 knots.

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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 8:00 PM ADT 11 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 8:00 PM ADT 11 October 2026 Tonight and Monday At 8:00 p.m. ADT tonight ridge located on a line northwest-southeast
over the southwestern Marine District.
By 3:30 p.m. ADT Monday ridge located over the eastern Marine
District.

At 3:00 a.m. ADT Monday low 1000 mb located over the southwestern
Marine District.
By 8:00 p.m. ADT Monday low 992 mb located over Laurentian Fan.

Marine Weather Statement

Issued 7:48 PM ADT 11 October 2026 A low pressure system will track across the southern slope waters on
Monday. Strong to gale force southerlies will switch to strong to
near gale force northeasterlies in its wake on Tuesday.

Marine interests are advised that gale warnings are in effect for
Georges Bank - southern half, West Scotian Slope - southern half,
East Scotian Slope - southern half and Laurentian Fan - southern
half.

Outlook for the start-up of the Upper Bay of Fundy lobster fishery.

Monday...Winds southwest 25 knots diminishing to light mid-day and
then to northeast 25 in the evening. Choppy sea conditions in the
evening when winds will be running against the rising tide.
Tuesday...Winds northeast 25 knots diminishing to east 10 to 15 knots
near noon then increasing to southeast 20 near midnight. Choppy sea
conditions in the morning when winds will run against the rising
tide.
Wednesday...Winds southeast 25 knots becoming southwest 25
Knots in the afternoon then to northwest 25 in the evening. Choppy
sea conditions late in the day when winds will be running against the
ebbing tide.

St. Lawrence - St. Lawrence River Area

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