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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 05 December 2025

Today Tonight and Saturday.

Storm warning in effect.

Wind northwest 40 to 50 knots diminishing to northwest 30 to 40 near noon and to northwest 20 to 30 early this evening. Wind diminishing to northwest 10 to 20 near midnight then becoming light overnight. Wind becoming southerly 15 near noon Saturday.

Flurries ending near midnight. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Temperatures minus 9 rising to minus 4 Saturday evening.

Waves

Issued 03:00 AM EST 05 December 2025
Today Tonight and Saturday. Seas 3 to 4 metres subsiding to 2 to 3 this afternoon and to 1 to 2 this evening. Seas subsiding to 1 or less overnight.

Extended Forecast

Issued 06:00 AM EST 05 December 2025
Sunday Wind southwest 10 to 20 knots increasing to westerly 20 to 30 in the morning.
Monday Wind west 15 to 25 knots increasing to west 25 to 35.
Tuesday Wind southwest 20 to 30 knots diminishing to southwest 10 to 20 late in the day.

Ice Forecast

Issued 10:00 AM EST 5 December 2025 Today Tonight and Saturday Open water. 

[ Canadian Ice Service ]

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Weather Conditions

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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 Montréal Metropolitain 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

Ice Forecasts

Issued 10:00 AM EST 5 December 2025 Today Tonight and Saturday

Ice Edge

First ice edge estimated from New Brunswick near 4705N 6450W to
4758N 6416W to Gaspe Peninsula near 4830N 6413W. Sea ice east of the
ice edge.

Second ice edge estimated from Gaspe Peninsula near 4856N 6712W to
4956N 6635W to 4958N 6014W to Quebec near 5125N 5737W. Sea ice north
of the ice edge.

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Storm warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 08:16 AM EST 05 December 2025

'Storm' force winds of 48 to 63 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.

Freezing spray warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 08:16 AM EST 05 December 2025

Moderate or severe freezing spray is 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 EST 5 December 2025 Today Tonight and Saturday At 3:00 a.m. EST today intensifying low 985 mb located over
Newfoundland.
By 7:00 p.m. EST tonight low 961 mb located east of Newfoundland.

At 3:00 a.m. EST today ridge located on a line north-south over
Montréal.
By 7:00 p.m. EST Saturday ridge located on a line north-south over
the Gulf of St. Lawrence.

At 7:00 p.m. EST tonight trough located on a line
northeast-southwest over Lake Superior.
By 7:00 p.m. EST Saturday trough located on a line
northeast-southwest over Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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