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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 09 March 2026

Today Tonight and Tuesday.

Wind southwest 10 to 15 knots increasing to southwest 15 to 25 this afternoon then becoming southwest 15 this evening. Wind diminishing to light Tuesday morning then becoming northeast 10 to 15 Tuesday afternoon.

Periods of rain Tuesday afternoon and evening. Risk of freezing rain late Tuesday evening.

Temperatures plus 1 rising to plus 7 this afternoon then falling to minus 1 Tuesday evening.

Extended Forecast

Issued 06:00 AM EDT 09 March 2026
Wednesday Wind northeast 20 to 30 knots.
Thursday Wind northeast 15 to 25 knots becoming southwest 20 to 30.
Friday Wind southwest 15 to 25 knots diminishing to west 10 to 15.

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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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 3:00 AM EDT 9 March 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge located on a line north-south over
Anticosti Island.
By 8:00 p.m. EDT tonight departing ridge located on a line
northeast-southwest over Labrador Sea.

At 3:00 a.m. EDT today low 988 mb located northwest of Lake
Superior.
By 8:00 p.m. EDT Tuesday departing low 986 mb located north of
Newfoundland.

At 5:00 p.m. EDT today ridge located on a line northwest-southeast
over the Great Lakes.
By 8:00 p.m. EDT Tuesday ridge located on a line northwest-southeast
over Matane.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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