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Southwestern Grand Banks

Warnings

Forecast

Marine Forecast

Issued 10:00 AM NDT 21 July 2026

Today Tonight and Wednesday.

Wind light becoming southeast 15 knots early Wednesday morning then veering to southwest 15 near noon Wednesday.

Fog banks forming this evening.

Waves

Issued 06:00 AM NDT 21 July 2026
Today Tonight and Wednesday. Seas 1 to 2 metres.

Extended Forecast

Issued 03:00 AM NDT 21 July 2026
Thursday Wind southwest 15 knots.
Friday Wind southwest 15 knots.
Saturday Wind south 15 knots.

Ice Forecast

Issued 10:00 AM EDT 20 July 2026 Today Tonight and Tuesday Ice free.  

[ 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 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

Southwestern Grand Banks

Issued 10:00 AM EDT 20 July 2026 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from 6136N 6335W to 6201N 6252W then
northeastward. Sea ice northwest of the ice edge.

Ice Coverage

Ice free.

Ice Forecasts

Tail of the Grand Banks

Issued 10:00 AM EDT 20 July 2026 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from 6136N 6335W to 6201N 6252W then
northeastward. Sea ice northwest of the ice edge.

Ice Coverage

Forecasts available to mariners upon request.

 

Iceberg Bulletin

Southwestern Grand Banks

Issued 2:30 PM EDT 20 July 2026

Iceberg Limit

Iceberg limit at 0000 UTC 21 Jul estimated from Newfoundland near
4805N 5255W to 4700N 4600W to 4730N 4430W to 4830N 4430W to 5535N
5100W to 5745N 5400W to 5825N 4825W to 5720N 4510W then eastward.

Iceberg Count

No confirmed icebergs.

Iceberg Bulletin

Tail of the Grand Banks

Issued 2:30 PM EDT 20 July 2026

Iceberg Limit

Iceberg limit at 0000 UTC 21 Jul estimated from Newfoundland near
4805N 5255W to 4700N 4600W to 4730N 4430W to 4830N 4430W to 5535N
5100W to 5745N 5400W to 5825N 4825W to 5720N 4510W then eastward.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM NDT 21 July 2026 Today Tonight and Wednesday At 10:00 a.m. NDT today ridge located south of the Maritimes.
By 10:00 a.m. NDT Wednesday ridge located east of the Grand Banks.

At 8:00 p.m. NDT tonight trough located on a line east-west over
the East Coast of the U.S.
By 8:00 p.m. NDT Wednesday trough located on a line east-west over
the Quebec Lower North Shore.

Marine Weather Statement

Issued 9:58 AM NDT 21 July 2026 A trough of low pressure will develop over the Eastern Seaboard this
evening before moving northward through the Gulf of St. Lawrence on
Wednesday. Strong to gale force southerlies will develop over most
waters ahead of the trough on Wednesday.

Marine interests are advised that a gale warning is in effect for
Gulf-Port au Port.

Atlantic - Maritimes Area

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Marine Weather for Canada

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