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Cabot Strait - southern half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM AST 11 December 2025

Today Tonight and Friday.

Gale warning in effect.

Wind southeasterly 25 knots veering to southwest 25 to 30 early this afternoon then increasing to westerly 35 to 40 late overnight. Wind westerly 35 to 40 Friday.

Rain ending this evening. Flurries Friday. Visibility 1 mile or less in flurries.

Temperatures plus 6 falling to minus 1 Friday afternoon.

Waves

Issued 05:00 AM AST 11 December 2025
Today Tonight and Friday. Seas 1 metre building to 2 early this morning and to 3 to 4 Friday morning.

Extended Forecast

Issued 03:00 AM AST 11 December 2025
Saturday Wind west 35 knots diminishing to west 25 in the afternoon.
Sunday Wind west 20 knots increasing to southeast 25.
Monday Wind east 30 knots increasing to northwest 45.

Ice Forecast

Issued 10:00 AM EST 11 December 2025 Today Tonight and Friday 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

Issued 10:00 AM EST 11 December 2025 Today Tonight and Friday

Ice Edge

First ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to Newfoundland near 5029N 5728W. Sea ice
north of the ice edge.

Ice Coverage

Ice free.

 

Iceberg Bulletin

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.
Warnings

Warnings (In effect)

Gale warning in effect

Cabot Strait - southern half

Issued 10:00 AM AST 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 10:00 AM AST 11 December 2025 Today Tonight and Friday At 10:00 a.m. AST today trough located on a line northeast-southwest
over East Scotian Slope.
By 8:00 p.m. AST tonight departing trough located over the Grand
Banks.

At 10:00 a.m. AST today low 989 mb located near the Gaspe Peninsula.
By 3:30 p.m. AST today low 980 mb located over the northern Gulf
of St. Lawrence.

At 8:00 p.m. AST Friday departing low 968 mb located over Labrador
Sea.

Marine Weather Statement

Issued 9:49 AM AST 11 December 2025 A trough of low pressure is tracking across southern waters today to
lie over the Grand Banks by this evening. Strong to gale force
southerly winds are forecast ahead of this feature.

A low pressure system near the Gaspé Peninsula will continue slowly
moving north-northeastward to lie over the Northern Gulf of St.
Lawrence waters by this afternoon. Strong to gale force easterly
winds are occurring ahead of the low. Strong to gale force westerly
winds will develop south of the low late in the day today. On Friday,
westerly winds will approach storm force strength over southern
waters. Winds will begin to diminish Friday night as the low departs
the region to the northeast.

Marine interests are advised that gale warnings are in effect for all
waters.

Additionally, freezing spray warnings are in effect for Fundy, Grand
Manan, Northumberland Strait, Chaleur-Miscou and Anticosti -
northwestern half.

Atlantic - Newfoundland Area

Another Region

Marine Weather for Canada

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