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Anticosti - eastern half

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 18 August 2026

Tonight and Wednesday.

Strong wind warning in effect.

Wind southeasterly 10 to 15 knots increasing to southeasterly 20 Wednesday morning then diminishing to southwest 10 to 15 Wednesday evening.

Showers overnight and Wednesday. Fog patches.

Waves

Issued 05:00 PM ADT 18 August 2026

Anticosti - northwestern half

Tonight and Wednesday. Seas 1 metre or less.

Anticosti - southeastern half

Tonight and Wednesday. Seas 1 to 2 metres.

Extended Forecast

Issued 03:30 PM ADT 18 August 2026
Thursday Wind southwesterly 10 to 15 knots.
Friday Wind westerly 15 to 20 knots.
Saturday Wind southwesterly 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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.
 

Iceberg Bulletin

Issued 2:30 PM EDT 18 August 2026

Iceberg Limit

Iceberg limit at 0000 UTC 19 Aug estimated from Newfoundland near
4915N 5330W to 4940N 5320W to 5030N 5330W to 6000N 5600W to 6020N
5200W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Strong wind warning in effect

Anticosti - eastern half

Issued 4:12 PM ADT 18 August 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 3:30 PM ADT 18 August 2026 Tonight and Wednesday At 3:30 p.m. ADT today trough located from the Gulf of St. Lawrence
to Browns Bank.
By 3:30 p.m. ADT Wednesday trough located from the Gulf of
St. Lawrence to East Scotian Slope.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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