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Anticosti - northeastern half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 12 May 2025

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind northwesterly 25 knots backing to westerly 20 this evening then veering to north 20 late overnight. Wind diminishing to west 15 Tuesday afternoon.

Scattered showers tonight.

Waves

Issued 05:00 AM ADT 12 May 2025

Anticosti - northern half

Today Tonight and Tuesday. Seas 1 to 2 metres subsiding to 1 or less Tuesday afternoon.

Anticosti - southern half

Today Tonight and Tuesday. Seas 3 metres subsiding to 1 to 2 this afternoon and to 1 or less Tuesday afternoon.

Extended Forecast

Issued 03:00 AM ADT 12 May 2025
Wednesday Wind southwest 10 to 15 knots increasing to southwest 20 in the afternoon.
Thursday Wind west 20 to 25 knots diminishing to variable 15.
Friday Wind variable 15 knots.

Ice Forecast

Issued 10:00 AM EDT 12 May 2025 Today Tonight and Tuesday Bergy water. 

[ Canadian Ice Service ]

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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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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 12 May 2025 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from Quebec near 5033N 5925W to 5017N 5904W to Newfoundland near 5049N 5704W. Sea ice north of the ice edge.

Ice Coverage

Bergy water.

 

Iceberg Bulletin

Issued 3:02 PM EDT 11 May 2025

Iceberg Limit

Iceberg limit at 0000 UTC 12 May estimated from Newfoundland near 4723N 5503W to 4200N 5040W to 4135N 4720W to 4900N 4045W to 5320N 4815W to 5915N 5605W to 5920N 5335W to 5820N 4745W 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 - northeastern half

Issued 10:00 AM ADT 12 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 12 May 2025 Today Tonight and Tuesday At 10:00 a.m. ADT today low 984 mb located over southern Labrador
Sea.
By 3:30 p.m. ADT today departing low 984 mb located northeast
of Newfoundland.

At 3:00 a.m. ADT Tuesday trough from low located from Newfoundland
to Lurcher.
By 3:30 p.m. ADT Tuesday trough from low located over the Grand
Banks.

At 3:00 a.m. ADT Tuesday ridge located on a line north-south over
New England.
By 3:30 p.m. ADT Tuesday ridge located on a line north-south over
the Maritimes.

Marine Weather Statement

Issued 10:25 AM ADT 12 May 2025 A low pressure system over the Southern Labrador Sea will slowly
track eastward today. Strong to gale force west to northwesterly
winds will gradually diminish over northern and eastern waters this
afternoon.

Gale warnings are in effect for Banquereau, Cabot Strait, and Gulf -
Magdalen - northeastern half.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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