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Northumberland Strait - western half

Forecast

Marine Forecast

Issued 10:00 AM ADT 09 September 2026

Today Tonight and Thursday.

Gale warning in effect.

Wind light increasing to southwest 15 knots late this afternoon and to south 25 this evening. Wind increasing to south 35 Thursday morning then diminishing to west 25 Thursday afternoon.

Showers Thursday with a risk of thunderstorms.

Extended Forecast

Issued 03:00 AM ADT 09 September 2026
Friday Wind northwest 30 knots.
Saturday Wind northwest 20 knots diminishing to light.
Sunday Wind southwest 25 knots.

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Weather Conditions

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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)

Gale warning in effect

Northumberland Strait - western half

Issued 10:00 AM ADT 09 September 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 9 September 2026 Today Tonight and Thursday At 10:00 a.m. ADT today departing trough located over the southern
Grand Banks.

At 8:00 p.m. ADT tonight trough located over Quebec.
By 3:00 a.m. ADT Thursday trough located over Maine.

At 10:00 a.m. ADT today ridge located over the western Marine
District.
By 3:00 a.m. ADT Thursday ridge located from Newfoundland to East
Scotian Slope.

Marine Weather Statement

Issued 2:48 AM ADT 9 September 2026 A trough of low pressure will approach the marine district late today
and cross the region on Thursday. Strong to gale force
southwesterlies will develop ahead of this system.

Marine interests are advised that gale warnings are in effect for all
waters except Georges Bank, West Scotian Slope, East Scotian Slope,
Laurentian Fan, and Chaleur - Miscou - western half.

St. Lawrence - St. Lawrence River Area

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