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Southwestern Grand Banks

Warnings

Forecast

Marine Forecast

Issued 03:00 AM NDT 13 March 2026

Today Tonight and Saturday.

Gale warning in effect.

Wind southwest 30 knots increasing to southwest 35 early this morning then veering to west 35 this afternoon. Wind diminishing to west 25 overnight and to variable 10 to 15 Saturday morning. Wind increasing to southeast 25 Saturday afternoon and to southeast 35 Saturday evening.

Showers or flurries ending this evening. Risk of thunderstorms this morning. Rain or snow Saturday evening. Fog banks dissipating this afternoon.

Temperatures plus 9 falling to minus 1 to plus 5 this evening.

Waves

Issued 06:00 PM NDT 12 March 2026
Tonight and Friday. Seas 2 to 3 metres building to 3 to 5 near midnight and to 5 to 7 Friday afternoon.

Extended Forecast

Issued 03:00 AM NDT 13 March 2026
Sunday Wind west 35 to 45 knots.
Monday Wind northwest 15 to 20 knots diminishing to light.
Tuesday Wind southwest 25 to 35 knots.

Ice Forecast

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday 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 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

Southwestern Grand Banks

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday

Ice Edge

First ice edge estimated from 4640N 5530W to 4628N 5339W to
Newfoundland near 4638N 5314W. Sea ice north of the ice edge.

Second ice edge estimated from Newfoundland near 4746N 5243W to
4845N 5230W to 5001N 5302W to 5141N 4911W to 5500N 5130W to 5700N
5600W to 6000N 5815W to 6159N 5721W then northeastward. Sea ice west
of the ice edge.

Ice Coverage

Ice free.

Ice Forecasts

Tail of the Grand Banks

Issued 10:00 AM EDT 12 March 2026 Today Tonight and Friday

Ice Edge

First ice edge estimated from 4640N 5530W to 4628N 5339W to
Newfoundland near 4638N 5314W. Sea ice north of the ice edge.

Second ice edge estimated from Newfoundland near 4746N 5243W to
4845N 5230W to 5001N 5302W to 5141N 4911W to 5500N 5130W to 5700N
5600W to 6000N 5815W to 6159N 5721W then northeastward. Sea ice west
of the ice edge.

Ice Coverage

Forecasts available to mariners upon request.

 

Iceberg Bulletin

Southwestern Grand Banks

Issued 2:53 PM EDT 12 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 13 Mar estimated from Newfoundland near
4640N 5310W to 4520N 4930W to 4555N 4410W to 4815N 4300W to 5220N
4615W to 5650N 5345W to 5930N 5700W to 6120N 5400W to 5825N 4900W
then eastward.

Iceberg Count

No confirmed icebergs.

Iceberg Bulletin

Tail of the Grand Banks

Issued 2:53 PM EDT 12 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 13 Mar estimated from Newfoundland near
4640N 5310W to 4520N 4930W to 4555N 4410W to 4815N 4300W to 5220N
4615W to 5650N 5345W to 5930N 5700W to 6120N 5400W to 5825N 4900W
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 13 March 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM NDT 13 March 2026 Today Tonight and Saturday At 3:00 a.m. NDT today deepening low 995 mb located over western
Newfoundland.
By 3:00 a.m. NDT Saturday low 951 mb located northeast of Belle
Isle Bank.

At 3:30 p.m. NDT Saturday low 1002 mb located over southern New
Brunswick.
By 8:00 p.m. NDT Saturday low 999 mb located over western Cape
Breton Island.

Marine Weather Statement

Issued 2:48 AM NDT 13 March 2026 A deepening low pressure system over Western Newfoundland will slowly
track northeastward today to lie northeast of Belle Isle Bank by
early Saturday morning. Strong to gale force southwesterlies are
expected south of the low today. As the low rapidly deepens over
Belle Isle Bank this evening, gale to storm force northwesterlies to
southwesterlies, except storm to hurricane force over Belle Isle
Bank, will develop to its west and south.

A second low pressure system will approach from the Maritimes late in
the day on Saturday. Strong to gale force easterlies to
southeasterlies are expected over southwesternmost waters ahead of
the low.

Marine interests are advised that a hurricane force wind warning is
in effect for Belle Isle Bank. Storm warnings are in effect for East
Coast, Northeast Coast, Funk Island Bank, and Northern Grand Banks.
Gale warnings are in effect for all remaining waters.

Marine interests are also advised that freezing spray warnings are in
effect for all waters except South Coast and the Grand Banks.

Atlantic - Maritimes Area

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Marine Weather for Canada

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