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Cabot Strait - southern half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM AST 12 December 2025

Today Tonight and Saturday.

Gale warning in effect.

Wind westerly 40 knots veering to northwest 35 after midnight then diminishing to west 30 near noon Saturday.

Flurries ending Saturday morning. Visibility 1 mile or less in flurries.

Temperatures near zero.

Waves

Issued 05:00 AM AST 12 December 2025
Today Tonight and Saturday. Seas 2 metres building to 3 to 4 early this morning then subsiding to 3 Saturday morning. Seas subsiding to 2 Saturday afternoon.

Extended Forecast

Issued 03:00 AM AST 12 December 2025
Sunday Wind west 20 knots increasing to southeast 25 in the afternoon.
Monday Wind east 30 knots increasing to northwest 45.
Tuesday Wind northwest 45 knots diminishing to northwest 15.

Ice Forecast

Issued 10:00 AM EST 12 December 2025 Today Tonight and Saturday Ice free. 

[ Canadian Ice Service ]

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Map of Atlantic - Maritimes marine weather areas Summerside Stephenville Airport North Cape Burgeo Pointe-des-Monts Port aux Basques Sagona Island St. Lawrence Tracadie Winterland Branch Hill Wreckhouse Halifax Harbour - 44258 LaHave Bank - 44150 Sept-Îles Airport Banquereau - 44139 Longue-Pointe-de-Mingan Île Rouge Île aux Perroquets Havre-Saint-Pierre Airport East Scotia Slope - 44137 Baie-Comeau Airport Mont-Joli Airport Rivière-la-Madeleine Saint John Airport Gaspé Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Heath Point Miscou Island Kouchibouguac Îles de la Madeleine Airport Kouchibouguac La Pocatière Grand Manan St. Stephen Fundy Park (Alma) New Carlisle Miramichi Pointe-au-Père Charlo Port Menier Bathurst Airport Île Bicquette Bas Caraquet Cap-Chat East Chedabucto Bay – 44488 West Chedabucto Bay – 44489 Lunenburg Charlottetown Airport Yarmouth Airport Pointe-Noire Western Head J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Nappan AAFC McNabs Island East Point Kentville AAFC Ingonish Beach Hart Island CFB Greenwood Grand Étang Eskasoni (First Nations) Debert Caribou Point Brier Island Cap-d'Espoir Beaver Island Baccaro Point
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 12 December 2025 Today Tonight and Saturday

Ice Edge

First ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to Newfoundland near 5029N 5728W. Sea ice
north of the ice edge.

Ice Coverage

Ice free.

 

Iceberg Bulletin

Issued 1:30 PM EST 11 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 12 Dec estimated from Newfoundland near
4730N 5239W to 4730N 5030W to 5200N 4915W to 5945N 5730W to 6155N
5330W to 6005N 4945W then northeastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Cabot Strait - southern half

Issued 10:00 AM AST 12 December 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 10:00 AM AST 12 December 2025 Today Tonight and Saturday At 10:00 a.m. AST today low 976 mb located northeast of Anticosti
Island.
By 8:00 p.m. AST tonight departing low 968 mb located over
Labrador Sea.

Marine Weather Statement

Issued 9:54 AM AST 12 December 2025 A low pressure system northeast of Anticosti Island will move to lie
over the Labrador Sea this evening. Gale to storm force west to
northwest winds will slowly diminish as the low moves northeastward.

Marine interests are advised that storm warnings are in effect for
East Scotian Slope and Laurentian Fan. Gale warnings are in effect
for all remaining waters.

Additionally, freezing spray warnings are in effect for Fundy, Grand
Manan, Northumberland Strait, Gulf-Magdalen, Chaleur-Miscou, and
Anticosti.

Atlantic - Maritimes Area

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Marine Weather for Canada

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