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Anticosti

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 18 May 2025

Today Tonight and Monday.

Strong wind warning in effect.

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

Rain. Risk of thunderstorms tonight. Fog patches forming overnight and dissipating Monday evening.

Waves

Issued 05:00 AM ADT 18 May 2025

Anticosti - northeastern half

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

Anticosti - southwestern half

Today Tonight and Monday. Seas 1 to 2 metres building to 2 to 3 this morning then subsiding to 1 to 2 Monday morning.

Extended Forecast

Issued 03:00 AM 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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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 2:52 PM EDT 17 May 2025

Iceberg Limit

Iceberg limit at 0000 UTC 18 May estimated from Newfoundland near 4723N 5503W to 4145N 5200W to 4145N 4610W to 4830N 4050W 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 10:00 AM 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 10:00 AM ADT 18 May 2025 Today Tonight and Monday At 10:00 a.m. ADT today low 995 mb located over the St. Lawrence
River.
By 3:00 a.m. ADT Monday low 993 mb located over southern New
Brunswick.

At 10:00 a.m. ADT today trough from low located from the Gulf of
Maine to East Scotian Slope.
By 3:00 a.m. ADT Monday trough from low located from New Brunswick
to Laurentian Fan.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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