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Southwestern Grand Banks

Warnings

Forecast

Marine Forecast

Issued 03:00 AM NST 11 December 2025

Today Tonight and Friday.

Gale warning in effect.

Wind southwest 35 knots diminishing to variable 10 to 15 near midnight then increasing to west 25 Friday morning. Wind increasing to southwest 35 Friday afternoon.

Showers. Fog patches forming this morning and dissipating Friday morning.

Waves

Issued 06:00 AM NST 11 December 2025
Today Tonight and Friday. Seas 3 to 5 metres building to 5 to 7 this afternoon then subsiding to 3 to 5 late overnight. Seas building to 5 to 7 Friday afternoon.

Extended Forecast

Issued 03:00 AM NST 11 December 2025
Saturday Wind southwest 35 knots.
Sunday Wind west 15 to 20 knots increasing to southeast 25.
Monday Wind south 35 knots.

Ice Forecast

Issued 10:00 AM EST 10 December 2025 Today Tonight and Thursday Ice free.  

[ Canadian Ice Service ]

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Map of Atlantic - Newfoundland marine weather areas Eskasoni (First Nations) Heath Point Bonavista Wreckhouse St.Paul Island Winterland Branch Hill Twillingate Stephenville Airport Burgeo St. Lawrence St. John's Int'l Airport St. Anthony Airport Grates Cove Cape Race Grand Étang Sagona Island North Mountain Port aux Basques Ingonish Beach La Scie Ferolle Point Englee Daniel's Harbour Corner Brook Cartwright Airport East Point West Chedabucto Bay – 44489 Blanc-Sablon Airport East Chedabucto Bay – 44488 Cap Whittle Chevery Banquereau - 44139 Charlottetown Airport Mary's Harbour North Cape Natashquan Airport Argentia J.A. Douglas McCurdy Sydney Airport Berry Hill Long Pond Îles de la Madeleine Airport Miscou Island Marticot Island Pool's Island
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Southwestern Grand Banks

Issued 10:00 AM EST 10 December 2025 Today Tonight and Thursday

Ice Edge

Ice edge estimated from Newfoundland near 4934N 5429W to 4941N 5429W
to 5016N 5608W to 5139N 5511W to 5339N 5536W to 5627N 6028W to 5928N
6239W to Labrador near 6018N 6424W. Sea ice west of the ice edge.

Ice Coverage

Ice free.

Ice Forecasts

Tail of the Grand Banks

Issued 10:00 AM EST 10 December 2025 Today Tonight and Thursday

Ice Edge

Ice edge estimated from Newfoundland near 4934N 5429W to 4941N 5429W
to 5016N 5608W to 5139N 5511W to 5339N 5536W to 5627N 6028W to 5928N
6239W to Labrador near 6018N 6424W. Sea ice west of the ice edge.

Ice Coverage

Forecasts available to mariners upon request.

 

Iceberg Bulletin

Southwestern Grand Banks

Issued 1:30 PM EST 10 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 11 Dec estimated from Newfoundland near
4730N 5239W to 4745N 5030W to 5230N 5000W to 5945N 5730W to 6155N
5330W to 6005N 4945W then northeastward.

Iceberg Count

No confirmed icebergs.

Iceberg Bulletin

Tail of the Grand Banks

Issued 1:30 PM EST 10 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 11 Dec estimated from Newfoundland near
4730N 5239W to 4745N 5030W to 5230N 5000W to 5945N 5730W to 6155N
5330W to 6005N 4945W then northeastward.

Iceberg Count

Forecasts available to mariners upon request.
Warnings

Warnings (In effect)

Gale warning in effect

Southwestern Grand Banks

Issued 03:09 AM NST 11 December 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 NST 11 December 2025 Today Tonight and Friday At 3:00 a.m. NST today deepening low 988 mb located west of the
Maritimes.
By 3:00 a.m. NST Friday low 977 mb located over eastern Belle
Isle Bank.

At 3:00 a.m. NST Friday approaching trough from 977 mb low located
on a line east-west over the Quebec Lower North Shore.

At 3:00 a.m. NST today ridge located on a line northwest-southeast
over Funk Island Bank.
By 10:00 a.m. NST today departing ridge located east of Funk
Island Bank.

Marine Weather Statement

Issued 3:04 AM NST 11 December 2025 A deepening low pressure system will approach the district from the
west this morning and track across the Gulf waters today. Strong to
gale force northeasterlies will develop over Gulf waters this
morning, and strong to gale force southwesterlies will develop over
southern waters today before diminishing tonight.

Meanwhile, a trough will develop in the wake of the low Friday night
over the Quebec Lower North Shore. Strong to gale force
southwesterlies to the south of the trough will spread over most
waters on Friday.

Marine interests are advised that gale warnings are in effect for all
waters except the Strait of Belle Isle, Gulf - Port au Port -
southeastern half, Northeast Coast - north of Cape St. John, and
Belle Isle Bank.

Marine interests are also advised that a freezing spray warning is in
effect for Belle Isle Bank.

Atlantic - Newfoundland Area

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Marine Weather for Canada

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