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Kingston to Cornwall

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 31 August 2026

Tonight and Tuesday.

Wind light becoming northeast 10 knots late overnight then becoming light Tuesday evening.

Showers with a risk of thunderstorms. Fog patches forming Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 31 August 2026
Wednesday Wind light.
Thursday Wind light.
Friday Wind 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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buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 31 August 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight trough from 998 mb low located on a line
northwest-southeast over Lake Superior.
By 6:30 p.m. EDT Tuesday trough from 1005 mb low located on a line
northwest-southeast over northeastern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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