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Gulf - Port au Port

Warnings

Forecast

Marine Forecast

Issued 08:00 PM NDT 21 April 2026

Tonight and Wednesday.

Wind northwest 10 to 15 knots veering to north 15 to 20 late overnight. Wind north 15 to 20 Wednesday.

Temperatures minus 5 to minus 1.

Waves

Issued 06:00 PM NDT 21 April 2026
Tonight and Wednesday. Seas 1 to 2 metres subsiding to 1 or less this evening then building to 1 to 2 late overnight.

Extended Forecast

Issued 03:30 PM NDT 21 April 2026
Thursday Wind northwest 15 knots diminishing to light late in the day.
Friday Wind variable 10 to 15 knots increasing to northeast 25.
Saturday Wind north 25 to 35 knots.

Ice Forecast

Issued 10:00 AM EDT 21 April 2026 Today Tonight and Wednesday Open water. Consolidated rotten first-year ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of Atlantic - Maritimes marine weather areas East Scotia Slope - 44137 Cap-Chat Burgeo Île Bicquette New Carlisle Îles de la Madeleine Airport Port Menier Summerside North Cape Pointe-au-Père Mont-Joli Airport La Pocatière Wreckhouse Banquereau - 44139 Port aux Basques Sagona Island Gaspé Airport LaHave Bank - 44150 Halifax Harbour - 44258 St. Lawrence Stephenville Airport Western Head Winterland Branch Hill Île aux Perroquets Beaver Island Baccaro Point St. Stephen Pointe-des-Monts Saint John Airport Sept-Îles Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Longue-Pointe-de-Mingan Miscou Island Île Rouge Kouchibouguac Pointe-Noire Kouchibouguac Havre-Saint-Pierre Airport Grand Manan Fundy Park (Alma) Miramichi Charlo West Chedabucto Bay – 44489 Bathurst Airport Baie-Comeau Airport Bas Caraquet East Chedabucto Bay – 44488 Nappan AAFC East Point Charlottetown Airport Yarmouth Airport Cap-d'Espoir Tracadie J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Rivière-la-Madeleine 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 21 April 2026 Today Tonight and Wednesday

Ice Edge

First ice edge estimated from Cape Breton Island near 4702N 6025W to
4745N 6115W to Gaspe Peninsula near 4846N 6410W. Sea ice southwest
of the ice edge.

Second ice edge estimated from Quebec near 4920N 6722W to 5005N
6558W to 4841N 6158W to 4957N 6006W to 4935N 5822W to 4836N 5937W to
Newfoundland near 4806N 5905W. Sea ice north of the ice edge.

Ice Coverage

Open water. Consolidated rotten first-year ice along parts of the
coasts.

 

Iceberg Bulletin

Issued 2:30 PM EDT 21 April 2026

Iceberg Limit

Iceberg limit at 0000 UTC 22 Apr estimated from Newfoundland near
4655N 5400W to 4415N 5210W to 4340N 4630W to 4630N 4415W to 5000N
4425W to 5305N 4755W to 5900N 5500W to 6015N 5245W to 5740N 4850W
then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM NDT 21 April 2026 Tonight and Wednesday At 8:00 p.m. NDT tonight low 1008 mb located south of Laurentian
Fan.
By 8:00 p.m. NDT Wednesday low 1003 mb located northeast of the
Avalon Peninsula.

At 8:00 p.m. NDT tonight trough located from the low to Funk
Island Bank.
By 8:00 p.m. NDT Wednesday trough located from the low to Belle
Isle Bank.

At 8:00 p.m. NDT tonight quasi-stationary ridge located on a line
north-south over the Gulf of St. Lawrence.

Marine Weather Statement

Issued 7:55 PM NDT 21 April 2026 A developing low pressure system approaching from the south is
forecast to pass just east of the Avalon Peninsula on Wednesday.
An associated trough extending northeastward from the low will pivot
west to northwestwards later Wednesday. Strong to gale force
northerlies will develop the west of the low and trough.

Marine interests are advised that gale warnings are in effect for
Strait of Belle Isle - eastern half, Northeast Coast, Belle Isle
Bank, and Southwestern Grand Banks.

Atlantic - Maritimes Area

Another Region

Marine Weather for Canada

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