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Cabot Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 18 July 2025

Tonight and Saturday.

Strong wind warning in effect.

Wind southwest 20 to 25 knots veering to northwest 25 to 30 late this afternoon then diminishing to westerly 15 after midnight. Wind becoming variable 10 to 15 Saturday morning then becoming south 15 Saturday evening.

Showers and fog patches ending this afternoon with a risk of thunderstorms.

Waves

Issued 05:00 PM ADT 18 July 2025

Cabot Strait - northern half

Tonight and Saturday. Seas 1 to 2 metres building to 2 to 3 this evening then subsiding to 1 to 2 early Saturday morning.

Cabot Strait - southern half

Tonight and Saturday. Seas 1 to 2 metres.

Extended Forecast

Issued 03:30 PM ADT 18 July 2025
Sunday Wind southwest 15 to 20 knots.
Monday Wind south 15 to 20 knots increasing to northwest 20 to 25.
Tuesday Wind northwest 25 to 30 knots diminishing to northwest 20 late in the day.

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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 18 July 2025

Iceberg Limit

Iceberg limit at 0000 UTC 19 Jul estimated from Newfoundland near
4709N 5256W to 4715N 4615W to 4920N 4400W to 5430N 4920W to 5645N
5340W to 5745N 5405W to 6100N 5310W to 5840N 4615W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Strong wind warning in effect

Cabot Strait

Issued 3:30 PM ADT 18 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 18 July 2025 Tonight and Saturday At 3:30 p.m. ADT today low 990 mb located over Labrador.
By 10:00 a.m. ADT Saturday departing low 983 mb located over
Labrador Sea.

At 8:00 p.m. ADT tonight ridge located west of the Marine District.
By 10:00 a.m. ADT Saturday ridge located over the southern Marine
District.

Marine Weather Statement

Issued 3:12 PM ADT 18 July 2025 A low pressure system over Labrador will continue to intensify as is
tracks northeastward tonight departing the region. Strong to gale
force westerlies over Gulf of St. Lawrence waters will diminish this
evening.

Marine interests are advised that gale warnings are in effect for
Chaleur - Miscou, Gulf - Magdalen and Anticosti.

Atlantic - Maritimes Area

Another Region

Marine Weather for Canada

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