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Northumberland Strait - western half

Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 12 December 2025

Tonight and Saturday.

Gale warning in effect.

Wind west 35 knots diminishing to northwest 30 near midnight then backing to west 25 Saturday morning. Wind diminishing to west 15 early Saturday evening.

Freezing spray warning in effect.

Freezing spray ending Saturday morning.

Temperatures near minus 4.

Extended Forecast

Issued 03:30 PM AST 12 December 2025
Sunday Wind west 20 knots increasing to southeast 25 in the afternoon.
Monday Wind northerly 25 knots increasing to northerly 40.
Tuesday Wind northwest 35 knots diminishing to northwesterly 25.

Ice Forecast

Issued 10:00 AM EST 12 December 2025 Today Tonight and Saturday Open water except 5 tenths new ice including 2 tenths grey ice along parts of the coasts. 

[ 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:
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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 12 December 2025 Today Tonight and Saturday

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

Open water except 5 tenths new ice including 2 tenths grey ice along
parts of the coasts.

Warnings

Warnings (In effect)

Gale warning in effect

Northumberland Strait - western half

Issued 8:00 PM AST 12 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

Northumberland Strait - western half

Issued 8:00 PM AST 12 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 8:00 PM AST 12 December 2025 Tonight and Saturday At 8:00 p.m. AST tonight low 960 mb located southeast of Labrador
Sea.
By 8:00 p.m. AST Saturday departing low 958 mb located east of
Labrador Sea.

At 10:00 a.m. AST Saturday ridge located from Quebec to the Gulf
of Maine.
By 8:00 p.m. AST Saturday ridge located from New Brunswick to East
Scotian Slope.

Marine Weather Statement

Issued 7:19 PM AST 12 December 2025 An intense low pressure system east of the Labrador Sea will remain
nearly stationary tonight, then will move slowly eastward on
Saturday. Gale to storm force west to northwest winds will diminish
on Saturday as the low moves eastward.

Marine interests are advised that storm warnings are in effect for
East Scotian Slope and Laurentian Fan. Gale warnings are in effect
for all remaining waters.

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

Atlantic - Newfoundland Area

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Marine Weather for Canada

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