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Laurentian Fan

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 20 October 2026

Tonight and Wednesday.

Wind northeast 25 knots except southwest 20 over southern sections late this afternoon and this evening. Wind diminishing to easterly 15 to 20 early Wednesday morning then increasing to east 25 Wednesday afternoon.

Rain and fog patches changing to showers overnight.

Waves

Issued 05:00 PM ADT 20 October 2026

Laurentian Fan - northeastern half

Tonight and Wednesday. Seas 1 to 2 metres.

Laurentian Fan - southwestern half

Tonight and Wednesday. Seas 1 to 2 metres.

Extended Forecast

Issued 03:30 PM ADT 20 October 2026
Thursday Wind east 20 to 25 knots.
Friday Wind north 30 knots increasing to north 40.
Saturday Wind northwest 25 knots.

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

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.
 

Iceberg Bulletin

Issued 2:30 PM EDT 20 October 2026

Iceberg Limit

Iceberg limit at 0000 UTC 21 Oct estimated from Newfoundland near
4806N 5252W to 4815N 5200W to 5145N 4900W to 6000N 5800W to 6125N
5445W to 5855N 4515W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 20 October 2026 Tonight and Wednesday At 3:30 p.m. ADT today trough from low located on a line
northeast-southwest over the southeastern Marine District.
By 8:00 p.m. ADT tonight trough from low located south of the
Marine District.

At 3:00 a.m. ADT Wednesday ridge located over southern Quebec.
By 8:00 p.m. ADT Wednesday ridge located over Newfoundland.

Marine Weather Statement

Issued 3:09 PM ADT 20 October 2026 A trough of low pressure extending from a system east of Cape
Hatteras will remain south of the marine district through Wednesday.
Strong to gale force northeasterly winds north of the trough will
persist across southern waters.

Marine interests are advised that gale warnings are in effect for
Georges Bank, West Scotian Slope, and East Scotian Slope.

Atlantic - Maritimes Area

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Marine Weather for Canada

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