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Northumberland Strait

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 06 September 2026

Tonight and Monday.

Strong wind warning in effect.

Wind northerly 25 to 30 knots diminishing to northwest 15 to 20 Monday afternoon.

Showers.

Extended Forecast

Issued 03:30 PM ADT 06 September 2026
Tuesday Wind northerly 25 knots.
Wednesday Wind northerly 15 to 20 knots diminishing to light.
Thursday Wind south 25 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 06 September 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 6 September 2026 Tonight and Monday At 8:00 p.m. ADT tonight low 997 mb located over Banquereau.
By 3:30 p.m. ADT Monday departing low 999 mb located over
Newfoundland.

Marine Weather Statement

Issued 7:34 PM ADT 6 September 2026 A low pressure system over Banquereau will drift northward tonight to
lie over Newfoundland Monday afternoon. Strong to gale force
northeasterlies over some northern waters will diminish somewhat
tonight.

Marine interests are advised that gale warnings are in effect for
Gulf-Magdalen and Anticosti - southeastern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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