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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 12 October 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind northeast 30 knots diminishing to north 20 late overnight and to north 15 Tuesday morning. Wind diminishing to light Tuesday afternoon.

Showers this evening.

Extended Forecast

Issued 03:30 PM ADT 12 October 2026
Wednesday Wind southeast 15 to 20 knots increasing to southeast 30 in the afternoon then diminishing to variable 15 late in the day.
Thursday Wind northwest 30 knots.
Friday Wind northwest 15 to 20 knots diminishing to 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 8:00 PM ADT 12 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 12 October 2026 Tonight and Tuesday At 8:00 p.m. ADT tonight low 995 mb located over Laurentian Fan.
By 3:00 a.m. ADT Tuesday departing low 992 mb located over the
Grand Banks.

At 8:00 p.m. ADT tonight high 1025 mb located over Quebec.
By 3:30 p.m. ADT Tuesday high 1022 mb located over the Gaspe
Peninsula.

Marine Weather Statement

Issued 7:44 PM ADT 12 October 2026 A low pressure system over Laurentian Fan will track east of the
district tonight. Strong to gale force westerlies south of the low
will shift to strong to gale force northeasterlies in its wake as a
ridge moves in from the northwest.

Marine interests are advised that gale warnings are in effect for
eastern shore - eastern half, Sable - eastern half, East Scotian
Slope - northern half, Fourchu, Banquereau, Laurentian Fan and Cabot
Strait.

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

Tonight...Winds northeast 25 to 30 knots. Choppy sea conditions this
evening when winds will be running against the rising tide.
Tuesday...Winds northeast 25 knots diminishing to northeast 15 knots
in the morning then to light near noon then increasing to southeast
15 near midnight. Choppy sea conditions in the morning when winds
will run against the rising tide.
Wednesday...Winds southeast 15 knots increasing to 25 knots in the
morning then becoming westerly 20 to 25 knots in the afternoon then
to northwest 25 late 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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