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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 July 2025

Today Tonight and Sunday.

Strong wind warning in effect.

Wind light increasing to southwest 15 to 25 knots this morning then diminishing to light this evening. Wind becoming northwest 15 Sunday evening.

Showers tonight and Sunday. Risk of thunderstorms Sunday afternoon. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 18 July 2025
Sunday Wind light becoming northwest 15 knots in the afternoon.
Monday Wind northwest 10 to 15 knots.
Tuesday Wind light.

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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

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Donnacona to Beauport

Issued 03:00 AM EDT 19 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 EDT 19 July 2025 Today Tonight and Sunday At 3:00 a.m. EDT today departing low 982 mb located over Labrador
Coast.

At 3:00 a.m. EDT today high located south of Cornwall.
By 8:00 p.m. EDT tonight departing high located near Cape Cod.

At 8:00 p.m. EDT tonight trough located from Sept-Îles to Lake
Huron.
By 8:00 p.m. EDT Sunday trough located from Natashquan to the Gulf
of Maine.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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