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Anticosti - southwestern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM AST 10 November 2025

Today Tonight and Tuesday.

Gale warning in effect.

Wind light increasing to easterly 20 knots early this morning and to southeast 30 this afternoon. Wind increasing to southeast 35 this evening with gusts to 45 from Margaree Harbour to Bay St. Lawrence. Wind diminishing to south 25 Tuesday morning then becoming northwest 25 Tuesday evening.

Periods of snow or rain beginning early this morning changing to scattered showers near noon. Fog patches forming near midnight and dissipating Tuesday evening.

Waves

Issued 05:00 PM AST 09 November 2025

Anticosti - northwestern half

Tonight and Monday. Seas 1 to 2 metres subsiding to 1 or less this evening then building to 1 to 2 Monday morning. Seas building to 2 to 3 Monday afternoon and to 3 to 4 Monday evening.

Anticosti - southeastern half

Tonight and Monday. Seas 1 to 2 metres subsiding to 1 or less late overnight then building to 1 to 2 early Monday afternoon. Seas building to 3 to 4 Monday evening.

Extended Forecast

Issued 03:00 AM AST 10 November 2025
Wednesday Wind west 40 knots diminishing to southwest 30 late in the day.
Thursday Wind variable 15 knots becoming north 15.
Friday Wind north 15 knots backing to northwest 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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land station Land Station
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 9 November 2025

Iceberg Limit

Iceberg limit at 0000 UTC 10 Nov estimated from Newfoundland near
5026N 5623W to 5015N 4930W to 5100N 4800W to 5315N 4900W to 5945N
5730W to 6030N 5330W to 5920N 5035W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Anticosti - southwestern half

Issued 03:00 AM AST 10 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 3:00 AM AST 10 November 2025 Today Tonight and Tuesday At 3:00 a.m. AST today trough located over New England.
By 3:00 a.m. AST Tuesday trough located from the Gaspe Peninsula
to West Scotian Slope.

At 3:00 a.m. AST today ridge located over the eastern Marine
District.
By 3:30 p.m. AST today departing ridge located east of the Marine
District.

Marine Weather Statement

Issued 3:29 AM AST 10 November 2025 A trough of low pressure will continue to approach from the west this
morning to lie over New Brunswick tonight. Winds will increase to
gale to storm force south to southeast winds today and Tuesday ahead
of the trough, with strong to gale force westerlies developing in its
wake.

Marine interests are advised that a storm warning is in effect for
Laurentian Fan - eastern half, gale warnings are in effect for all
remaining waters except Fundy.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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