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Cabot Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM AST 21 January 2026

Tonight and Thursday.

Gale warning in effect.

Wind west 45 knots except west 35 over southern sections. Wind diminishing to west 25 to 30 early this evening and to west 20 late this evening. Wind diminishing to westerly 15 late overnight and to light early Thursday morning. Wind increasing to south 15 to 20 near noon Thursday and to southwest 25 to 30 Thursday evening.

Flurries changing to snow Thursday afternoon. Visibility 1 mile or less in snow.

Freezing spray warning in effect.

Freezing spray ending this evening.

Temperatures minus 7 rising to plus 2 Thursday evening.

Waves

Issued 05:00 AM AST 21 January 2026

Cabot Strait - northern half

Today Tonight and Thursday. Seas 4 to 6 metres subsiding to 3 late this evening and to 1 to 2 overnight.

Cabot Strait - southern half

Today Tonight and Thursday. Seas 3 to 4 metres subsiding to 2 to 3 near noon and to 1 to 2 late this evening.

Extended Forecast

Issued 03:30 PM AST 21 January 2026
Friday Wind west 25 knots.
Saturday Wind west 30 knots increasing to northwest 35 to 45.
Sunday Wind northwest 40 knots diminishing to northwest 25.

Ice Forecast

Issued 10:00 AM EST 21 January 2026 Today Tonight and Thursday Open water. Consolidated grey-white ice in a few sheltered bays. 

[ 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 21 January 2026 Today Tonight and Thursday

Ice Edge

First ice edge estimated from New Brunswick near 4532N 6507W to Nova
Scotia near 4500N 6510W. Sea ice east of the ice edge.

Second ice edge estimated from Nova Scotia near 4435N 6327W to 4432N
6251W to 4539N 5917W to 4704N 6000W to 4822N 6159W to 5039N 5807W to
4759N 5937W to Newfoundland near 4738N 5919W. Sea ice northwest then
east of the ice edge.

Ice Coverage

Open water. Consolidated grey-white ice in a few sheltered bays.

 

Iceberg Bulletin

Issued 1:30 PM EST 21 January 2026

Iceberg Limit

Iceberg limit at 0000 UTC 22 Jan estimated from Newfoundland near
4938N 5600W to 5000N 5130W to 5100N 4800W to 5215N 4800W to 5945N
5730W to 6145N 5155W to 5930N 4750W then northeastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Cabot Strait

Issued 3:30 PM AST 21 January 2026

'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.

Freezing spray warning in effect

Cabot Strait

Issued 3:30 PM AST 21 January 2026

Moderate or severe freezing spray is 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 3:30 PM AST 21 January 2026 Tonight and Thursday At 3:30 p.m. AST today quasi-stationary low 976 mb located over
Labrador Sea.

At 3:30 p.m. AST today ridge located southwest of the Marine
District.
By 10:00 a.m. AST Thursday ridge located south of the Grand Banks.

At 3:00 a.m. AST Thursday trough located over New England.
By 8:00 p.m. AST Thursday trough located from Newfoundland to
Georges Bank.

Marine Weather Statement

Issued 3:50 PM AST 21 January 2026 Strong to gale force westerly winds over northeastern waters in the
wake of low over the Labrador Sea will diminish this evening as a
ridge of high pressure builds in from the west.

On Thursday, a trough of low pressure will track eastward across the
southern marine district. Strong to gale force southwesterlies are
expected ahead of the trough.

Marine interests are advised that gale warnings are in effect for
eastern shore, Sable, Fourchu, Banquereau, Cabot Strait,
Gulf-Magdalen - eastern half and Anticosti - eastern half.

Marine interests are advised that freezing spray warnings are in
effect for Fourchu, Banquereau - northern half, Cabot Strait and all
Gulf of St. Lawrence waters.

Atlantic - Maritimes Area

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Marine Weather for Canada

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