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Donnacona to Beauport

Warnings

Forecast

Marine Forecast

Issued 09:19 PM EDT 19 June 2025

Tonight and Friday.

Gale warning in effect.

Wind northeast 10 to 15 knots except southwest 35 near thunderstorms. Wind becoming variable 15 early Friday morning then increasing to northwesterly 15 to 25 near noon Friday. Wind diminishing to light early Friday evening.

Rain ending Friday morning. Risk of thunderstorms late this evening. Fog banks forming late overnight and dissipating Friday morning. Visibility as low as 1 mile in rain and 1 mile or less in fog banks.

Extended Forecast

Issued 06:00 PM EDT 19 June 2025
Saturday Wind light becoming southerly 10 to 15 knots in the afternoon.
Sunday Wind southwest 10 to 15 knots.
Monday Wind southwest 10 to 15 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

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Donnacona to Beauport

Issued 9:19 PM EDT 19 June 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 PM EDT 19 June 2025 Tonight and Friday At 3:00 p.m. EDT today low 999 mb located over eastern Lake Huron.
By 8:00 p.m. EDT Friday low 996 mb located over Chaleur Bay.

At 3:00 p.m. EDT today high 1017 mb located on a line north-south
over western Lake Superior.
By 8:00 p.m. EDT Friday high 1017 mb located on a line north-south
over Lake Erie.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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