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Cabot Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 17 July 2025

Tonight and Friday.

Strong wind warning in effect.

Wind south 20 to 25 knots except southeast 10 to 15 over northern sections late this afternoon and this evening. Wind becoming southwesterly 25 early Friday morning then veering to northwest 30 Friday afternoon.

Showers overnight and Friday with a risk of thunderstorms. Fog patches forming early this evening and dissipating Friday morning.

Waves

Issued 05:00 PM ADT 17 July 2025

Cabot Strait - northern half

Tonight and Friday. Seas 1 metre building to 1 to 2 late overnight.

Cabot Strait - southern half

Tonight and Friday. Seas 1 metre building to 2 Friday morning.

Extended Forecast

Issued 03:30 PM ADT 17 July 2025
Saturday Wind northwest 20 knots diminishing to light in the morning then becoming southwesterly 10 to 15 late in the day.
Sunday Wind southwest 15 to 20 knots.
Monday Wind south 10 to 15 knots becoming north 10 to 15.

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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 EDT 26 May 2025 Forecasts have ended for the season.
 

Iceberg Bulletin

Issued 2:30 PM EDT 17 July 2025

Iceberg Limit

Iceberg limit at 0000 UTC 18 Jul estimated from Newfoundland near
4709N 5256W to 4655N 4455W to 4945N 4250W to 5430N 4920W to 5645N
5340W to 5745N 5405W to 6100N 5310W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Strong wind warning in effect

Cabot Strait

Issued 3:30 PM ADT 17 July 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 3:30 PM ADT 17 July 2025 Tonight and Friday At 3:30 p.m. ADT today low 1003 mb located over southern Quebec.
By 3:00 a.m. ADT Friday low 995 mb located over the St. Lawrence
River.

At 8:00 p.m. ADT Friday low 988 mb located over Labrador.

Marine Weather Statement

Issued 3:11 PM ADT 17 July 2025 A low pressure system over Southern Quebec will intensify as is
tracks northeastward along the St. Lawrence River tonight to lie over
Labrador on Friday. Strong southerly winds will veer to strong to
gale force westerly winds on Friday in the wake of the system before
diminishing Friday night.

Marine interests are advised that a gale warning is in effect for
Anticosti.

Atlantic - Maritimes Area

Another Region

Marine Weather for Canada

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