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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 05 October 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind west 20 to 30 knots becoming west 20 Tuesday afternoon.

Showers this afternoon.

Waves

Issued 03:00 PM EDT 05 October 2026
Tonight and Tuesday. Seas 1 to 2 metres.

Extended Forecast

Issued 06:00 PM EDT 05 October 2026
Wednesday Wind southwest 10 to 15 knots increasing to southwest 15 to 25 in the afternoon.
Thursday Wind southwest 10 to 15 knots.
Friday Wind southwest 10 to 15 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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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 6:38 PM EDT 05 October 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 3:00 PM EDT 5 October 2026 Tonight and Tuesday At 3:00 p.m. EDT today low 998 mb located northwest of Lake
Saint-Jean.
By 8:00 p.m. EDT Tuesday low 980 mb located near the Strait of
Belle Isle.

At 3:00 p.m. EDT today ridge located on a line north-south over
the Midwestern states.
By 8:00 p.m. EDT Tuesday ridge located on a line north-south
over Montréal.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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