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Anticosti

Forecast

Marine Forecast

Issued 08:00 PM ADT 18 May 2025

Tonight and Monday.

Strong wind warning in effect.

Wind southeast 20 to 25 knots backing to east 20 late overnight then to northeast 25 Monday afternoon except northeast 15 over northwestern sections.

Rain and fog patches. Risk of thunderstorms tonight.

Waves

Issued 05:00 PM ADT 18 May 2025

Anticosti - northeastern half

Tonight and Monday. Seas 1 to 2 metres building to 2 to 3 Monday evening.

Anticosti - southwestern half

Tonight and Monday. Seas 2 to 3 metres subsiding to 1 to 2 Monday morning.

Extended Forecast

Issued 03:30 PM ADT 18 May 2025
Tuesday Wind northeast 25 knots.
Wednesday Wind northeast 25 knots diminishing to northeast 15 to 20.
Thursday Wind variable 15 knots.

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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 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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 16 May 2025 Forecasts have ended for the season.
 

Iceberg Bulletin

Issued 2:30 PM EDT 18 May 2025

Iceberg Limit

Iceberg limit at 0000 UTC 19 May estimated from Newfoundland near 4723N 5503W to 4130N 5215W to 4130N 4600W to 4825N 4035W to 5320N 4815W to 5915N 5605W to 5800N 5040W then eastward.

Iceberg Count

No confirmed icebergs except less than 10 icebergs east of the western iceberg limit.
Warnings

Warnings (In effect)

Strong wind warning in effect

Anticosti

Issued 8:00 PM ADT 18 May 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 8:00 PM ADT 18 May 2025 Tonight and Monday At 8:00 p.m. ADT tonight quasi-stationary low 994 mb located over
southern New Brunswick.

At 8:00 p.m. ADT tonight trough from low located from New Brunswick
to East Scotian Slope.
By 10:00 a.m. ADT Monday trough from low located from New Brunswick
to Banquereau.

St. Lawrence - St. Lawrence River Area

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