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Anticosti - southwestern half

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 21 April 2025

Tonight and Tuesday.

Strong wind warning in effect.

Wind northwest 25 to 30 knots diminishing to northwest 15 to 20 this evening and to north 10 to 15 late overnight. Wind diminishing to light early Tuesday morning then becoming southeast 10 to 15 Tuesday evening.

Showers or flurries Tuesday evening.

Temperatures near plus 1.

Waves

Issued 05:00 PM ADT 21 April 2025
Tonight and Tuesday. Seas 2 to 3 metres subsiding to 1 to 2 late overnight and to 1 or less Tuesday afternoon.

Extended Forecast

Issued 03:30 PM ADT 21 April 2025
Wednesday Wind easterly 15 knots.
Thursday Wind light.
Friday Wind northwest 15 knots.

Ice Forecast

Issued 10:00 AM EDT 20 April 2025 Today Tonight and Monday Open water. Consolidated rotten first-year ice in a few bays along the coast of Gaspe Peninsula. 

[ 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 20 April 2025 Today Tonight and Monday

Ice Edge

First ice edge estimated from New Brunswick near 4700N 6449W to
4836N 6358W to Quebec near 4851N 6412W. Sea ice west of the ice
edge.

Second ice edge estimated from Quebec near 5013N 6023W to 4956N
5932W to Newfoundland near 5022N 5732W. Sea ice north of the ice
edge.

Ice Coverage

Open water. Consolidated rotten first-year ice in a few bays along
the coast of Gaspe Peninsula.

 

Iceberg Bulletin

Issued 2:30 PM EDT 21 April 2025

Iceberg Limit

Iceberg limit at 0000 UTC 21 Apr estimated from Newfoundland near
4731N 5444W to 4125N 5145W to 4155N 4755W to 4715N 3650W to 5415N
4450W to 5915N 5605W to 6035N 5500W to 5900N 4930W then eastwards.

Western iceberg limit at 0000 UTC 21 Apr estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.

Iceberg Count

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

Warnings (In effect)

Strong wind warning in effect

Anticosti

Issued 3:30 PM ADT 21 April 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 21 April 2025 Today Tonight and Tuesday At 10:00 a.m. ADT today low 980 mb located over eastern
Newfoundland.
By 3:00 a.m. ADT Tuesday departing low 980 mb located east of
Newfoundland.

At 3:30 p.m. ADT today ridge located from Quebec to the Gulf
of Maine.
By 3:30 p.m. ADT Tuesday ridge located from the Gulf of St. Lawrence
to East Scotian Slope.

Marine Weather Statement

Issued 3:19 PM ADT 21 April 2025 A low pressure system east of Newfoundland will continue tracking
eastward tonight. A ridge of high pressure will approach from the
west moving across the district tonight and Tuesday.

Strong to gale force northwesterlies over eastern waters will
continue to diminish through the night as the low moves eastward and
the ridge approaches.

Marine interests are advised that gale warnings are in effect for
Banquereau, Laurentian Fan and Cabot Strait.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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