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Southwestern Grand Banks

Forecast

Marine Forecast

Issued 03:00 AM NDT 28 April 2025

Today Tonight and Tuesday.

Gale warning in effect.

Wind south 35 knots diminishing to variable 10 to 15 this afternoon except northeast 25 over northwestern sections Tuesday morning and afternoon. Wind becoming north 20 Tuesday afternoon.

Rain and fog banks with a risk of thunderstorms early this morning changing to showers this afternoon.

Waves

Issued 06:00 AM NDT 28 April 2025
Today Tonight and Tuesday. Seas 3 to 5 metres subsiding to 2 to 3 late overnight except 3 to 4 over northwestern sections overnight and Tuesday.

Extended Forecast

Issued 03:00 AM NDT 28 April 2025
Wednesday Wind variable 10 to 15 knots increasing to southwest 25 in the afternoon.
Thursday Wind west 25 knots increasing to west 35.
Friday Wind northwest 25 knots.

Ice Forecast

Issued 10:00 AM EDT 27 April 2025 Today Tonight and Monday Bergy water.  

[ Canadian Ice Service ]

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

Ice Forecasts

Southwestern Grand Banks

Issued 10:00 AM EDT 27 April 2025 Today Tonight and Monday

Ice Edge

Ice edge estimated from Newfoundland near 4849N 5349W to 4908N 5135W
to 5410N 5113W to 5629N 5651W to 6129N 5944W to 6200N 5900W then
northeastward. Sea ice north then west of the ice edge.

Ice Coverage

Bergy water.

Ice Forecasts

Tail of the Grand Banks

Issued 10:00 AM EDT 27 April 2025 Today Tonight and Monday

Ice Edge

Ice edge estimated from Newfoundland near 4849N 5349W to 4908N 5135W
to 5410N 5113W to 5629N 5651W to 6129N 5944W to 6200N 5900W then
northeastward. Sea ice north then west of the ice edge.

Ice Coverage

Forecasts available to mariners upon request.

 

Iceberg Bulletin

Southwestern Grand Banks

Issued 2:30 PM EDT 24 April 2025

Iceberg Limit

Iceberg limit at 0000 UTC 25 Apr estimated from Newfoundland near
4731N 5444W to 4055N 5215W to 4125N 4740W to 4705N 3500W to 5355N
4530W to 5915N 5605W to 6035N 5500W to 5920N 4925W then eastwards.

Western iceberg limit at 0000 UTC 25 Apr estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.

Iceberg Count

No confirmed icebergs except less than 10 icebergs northeast of the
iceberg limit.

Iceberg Bulletin

Tail of the Grand Banks

Issued 2:30 PM EDT 24 April 2025

Iceberg Limit

Iceberg limit at 0000 UTC 25 Apr estimated from Newfoundland near
4731N 5444W to 4055N 5215W to 4125N 4740W to 4705N 3500W to 5355N
4530W to 5915N 5605W to 6035N 5500W to 5920N 4925W then eastwards.

Western iceberg limit at 0000 UTC 25 Apr estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

Warnings (In effect)

Gale warning in effect

Southwestern Grand Banks

Issued 03:00 AM NDT 28 April 2025

'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 28 April 2025 Today Tonight and Tuesday At 3:00 a.m. NDT today low 1003 mb located over Cabot Strait.
By 3:00 a.m. NDT Tuesday low 1011 mb located over the southern
Grand Banks.

At 3:00 a.m. NDT today trough from low located on a line
northeast-southwest over central Newfoundland.
By 3:00 a.m. NDT Tuesday departing trough from low located east
of the Grand Banks.

Marine Weather Statement

Issued 3:00 AM NDT 28 April 2025 A low pressure system over Cabot Strait will move to lie over the
Southern Grand Banks tonight. Meanwhile, an associated trough
extending northeast of the low depart to the east of the Grand Banks
tonight. Strong to gale force south to southwesterlies can be
expected ahead of these features, with strong to gale force north to
northeasterlies in their wake.

Marine interests are advised that gale warnings are in effect for all
waters except Strait of Belle Isle - western half and Southwest
Coast.

Atlantic - Maritimes Area

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