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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 10 October 2026

Tonight and Sunday.

Strong wind warning in effect.

Wind northwest 20 to 25 knots diminishing to northwest 15 late overnight then backing to west 10 to 15 Sunday morning. Wind increasing to southwest 25 late Sunday afternoon.

Extended Forecast

Issued 03:30 PM ADT 10 October 2026
Monday Wind southwest 25 knots becoming northeast 25 in the afternoon.
Tuesday Wind northeast 20 knots.
Wednesday Wind southeast 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 10 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 10 October 2026 Tonight and Sunday At 8:00 p.m. ADT tonight departing trough located over the Avalon
Peninsula.

At 8:00 p.m. ADT tonight ridge located over New England.
By 8:00 p.m. ADT Sunday ridge located south of the Marine District.

At 8:00 p.m. ADT Sunday approaching trough located west of the
Marine District.

Marine Weather Statement

Issued 7:32 PM ADT 10 October 2026 A trough of low pressure will pass east or the Avalon Peninsula this
with strong northwesterly winds easing tonight as a ridge approaches
the district.

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

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

Monday...Winds southwest 25 knots veering to west 10 to 15 knots
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
15 to 20 knots near noon then increasing to southeast 20 knots late
in the day. Choppy sea conditions in the morning when winds will run
Against the rising tide. Wednesday...Winds southeast 20 to 25 knots
becoming west 20 to 25 knots in the afternoon. 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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