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Northumberland Strait

Forecast

Marine Forecast

Issued 03:00 AM ADT 17 July 2025

Today Tonight and Friday.

Strong wind warning in effect.

Wind southwesterly 10 to 15 knots increasing to south 15 to 20 early this evening and to south 20 to 25 near midnight. Wind veering to westerly 20 to 25 Friday afternoon then diminishing to northwest 10 to 15 Friday evening.

Rain overnight and Friday with a risk of thunderstorms.

Extended Forecast

Issued 03:00 AM ADT 17 July 2025
Saturday Wind northwest 15 to 20 knots backing to southwest 15 to 20 in the afternoon.
Sunday Wind southwest 15 to 20 knots diminishing to light.
Monday Wind northerly 15 to 20 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Saint-Hubert Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts 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 Miscou Island Kouchibouguac La Pocatière
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Northumberland Strait

Issued 03:00 AM ADT 17 July 2025

'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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 17 July 2025 Today Tonight and Friday At 3:00 a.m. ADT today dissipating trough located over the Gulf
of St. Lawrence.

At 10:00 a.m. ADT today low 1003 mb located near the Great Lakes.
By 8:00 p.m. ADT Friday trough from 992 mb low located from
Newfoundland to East Scotian Slope.

Marine Weather Statement

Issued 2:38 AM ADT 17 July 2025 An intensifying low pressure system approaching from the west and
moving northeast through the Gulf of St. Lawrence will give strong to
gale force winds to much of the district.

A gale warning is in effect for Anticosti - southern half. Strong
wind warnings are in effect for Fundy, Grand Manan, Lurcher,
southwestern shore, eastern shore, Fourchu, Cabot Strait and all Gulf
of St. Lawrence waters.

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