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Cabot Strait

Warnings

Forecast

Marine Forecast

Issued 03:30 PM AST 09 December 2025

Tonight and Wednesday.

Gale warning in effect.

Wind westerly 25 to 35 knots becoming westerly 25 near midnight then backing to southwesterly 15 to 20 early Wednesday morning. Wind increasing to southwesterly 25 Wednesday afternoon.

Flurries this afternoon. Flurries Wednesday morning. Showers or flurries Wednesday afternoon. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Freezing spray ending near midnight.

Temperatures minus 5 rising to plus 2 Wednesday afternoon.

Waves

Issued 05:00 PM AST 09 December 2025
Tonight and Wednesday. Seas 3 to 4 metres subsiding to 2 to 3 this evening.

Extended Forecast

Issued 03:30 PM AST 09 December 2025
Thursday Wind south 25 to 35 knots becoming southwest 25 in the afternoon.
Friday Wind west 40 knots.
Saturday Wind west 35 knots diminishing to west 25.

Ice Forecast

Issued 10:00 AM EST 9 December 2025 Today Tonight and Wednesday 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 9 December 2025 Today Tonight and Wednesday

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 4741N 6431W to 4827N 6402W 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 4949N 6317W 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 9 December 2025

Iceberg Limit

Iceberg limit at 0000 UTC 10 Dec estimated from Newfoundland near
4745N 5245W to 4800N 5100W to 5300N 5015W to 5945N 5730W then
northeastward.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Cabot Strait

Issued 3:30 PM AST 09 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.

Freezing spray warning in effect

Cabot Strait

Issued 3:30 PM AST 09 December 2025

Moderate or severe freezing spray is occurring or expected to occur in this marine area. 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 3:30 PM AST 9 December 2025 Tonight and Wednesday At 3:30 p.m. AST today departing low 962 mb located northeast
of Newfoundland.

At 3:30 p.m. AST today ridge located over the southwestern Marine
District.
By 3:00 a.m. AST Wednesday ridge located south of the Marine
District.

At 8:00 p.m. AST tonight approaching trough located over New
England.

Marine Weather Statement

Issued 3:06 PM AST 9 December 2025 A low pressure system northeast of Newfoundland will continue to pull
further away today. Strong to gale force northwesterlies will
diminish in the wake of the low.

A trough of low pressure will approach tonight and cross the marine
district Wednesday. Strong to potentially gale force southwesterlies
will develop ahead of this feature.

Marine interests are advised that gale warnings are in effect for
Cabot Strait and Anticosti.

Freezing spray warnings are in effect for Cabot Strait and all Gulf
of St. Lawrence waters.

Atlantic - Newfoundland Area

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Marine Weather for Canada

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