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Anticosti - northwestern half

Warnings

Forecast

Marine Forecast

Issued 03:30 PM AST 12 November 2025

Tonight and Thursday.

Gale warning in effect.

Wind west 35 knots with gusts to 45 in the Honguedo Strait. Wind diminishing to west 25 early this evening and to light after midnight. Wind becoming north 10 to 15 Thursday evening.

Scattered flurries or scattered showers ending after midnight.

Waves

Issued 05:00 PM AST 12 November 2025
Tonight and Thursday. Seas 3 to 4 metres subsiding to 1 to 2 near midnight and to 1 or less Thursday morning.

Extended Forecast

Issued 03:30 PM AST 12 November 2025
Friday Wind north 15 knots backing to northwest 20 in the afternoon.
Saturday Wind northwest 30 knots diminishing to west 20.
Sunday Wind south 15 knots backing to southeast 20.

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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 EDT 26 May 2025 Forecasts have ended for the season.
 

Iceberg Bulletin

Issued 1:30 PM EST 12 November 2025

Iceberg Limit

Iceberg limit at 0000 UTC 13 Nov estimated from Newfoundland near
5026N 5623W to 5000N 4915W to 5045N 4745W to 5300N 4830W to 5945N
5730W to 6055N 5315W to 5950N 4955W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Anticosti - northwestern half

Issued 3:30 PM AST 12 November 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 3:30 PM AST 12 November 2025 Tonight and Thursday At 3:30 p.m. AST today departing low 959 mb located over northern
Labrador.

At 3:00 a.m. AST Thursday intensifying low 1003 mb located over
southwestern East Scotian Slope.
By 3:30 p.m. AST Thursday low 990 mb located over southern
Banquereau.

Marine Weather Statement

Issued 3:20 PM AST 12 November 2025 A departing low pressure system over Central Labrador will continue
to track north tonight. Strong to gale force westerlies over Gulf
waters will diminish later this evening.

A second low pressure system will develop tonight over East Scotian
Slope, to lie over Banquereau by tomorrow afternoon. Strong to gale
force easterly to northerly winds will develop on the north side of
the low tomorrow afternoon.

Marine interests are advised that gale warnings are in effect for
Banquereau, Cabot Strait, Gulf - Magdalen, Chaleur - Miscou, and
Anticosti.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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