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Southwestern Grand Banks

Warnings

Forecast

Marine Forecast

Issued 03:00 AM NDT 05 September 2026

Today Tonight and Sunday.

Gale warning in effect.

Wind southeast 25 knots increasing to southeast 35 this morning then diminishing to south 25 this afternoon. Wind diminishing to variable 10 to 15 this evening then becoming southwest 15 Sunday morning.

Rain with a risk of thunderstorms today changing to showers overnight. Fog patches forming this afternoon and dissipating Sunday morning.

Waves

Issued 06:00 AM NDT 05 September 2026
Today Tonight and Sunday. Seas 2 to 3 metres building to 3 to 5 this morning becoming 2 to 3 this afternoon except 3 to 5 over northern sections tonight.

Extended Forecast

Issued 03:00 AM NDT 05 September 2026
Monday Wind variable 15 to 20 knots increasing to southwest 25 in the morning.
Tuesday Wind west 25 knots.
Wednesday Wind variable 10 to 15 knots increasing to northeast 15 to 20.

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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

Southwestern Grand Banks

Issued 10:00 AM EDT 7 August 2026 Forecasts have ended for the season.

Ice Forecasts

Tail of the Grand Banks

Issued 10:00 AM EDT 7 August 2026 Forecasts have ended for the season.
 

Iceberg Bulletin

Southwestern Grand Banks

Issued 2:30 PM EDT 4 September 2026

Iceberg Limit

Iceberg limit at 0000 UTC 5 Sep estimated from Newfoundland near
4910N 5455W to 5400N 5345W to 6000N 5600W to 6130N 5420W to 5900N
4610W then eastward.

Iceberg Count

No confirmed icebergs.

Iceberg Bulletin

Tail of the Grand Banks

Issued 2:30 PM EDT 4 September 2026

Iceberg Limit

Iceberg limit at 0000 UTC 5 Sep estimated from Newfoundland near
4910N 5455W to 5400N 5345W to 6000N 5600W to 6130N 5420W to 5900N
4610W then eastward.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

Warnings (In effect)

Gale warning in effect

Southwestern Grand Banks

Issued 03:00 AM NDT 05 September 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM NDT 5 September 2026 Today Tonight and Sunday At 3:00 a.m. NDT today deepening low 998 mb located south of
Nova Scotia.
By 8:00 p.m. NDT tonight quasi-stationary low 994 mb located
over Banquereau.

At 3:00 a.m. NDT today departing ridge located east of the Marine
District.

Marine Weather Statement

Issued 3:00 AM NDT 5 September 2026 A low pressure system south of Nova Scotia will slowly move eastward
to lie over Banquereau this evening where it will remain nearly
stationary for the rest of the forecast period. Strong to gale force
southeasterlies to northeasterlies are expected to spread across most
waters today.

Marine interests are advised that gale warnings are in effect for all
waters except Strait of Belle Isle, Northeast Gulf, and Belle Isle
Bank.

Atlantic - Maritimes Area

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Marine Weather for Canada

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