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Northumberland Strait - western half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM AST 16 December 2025

Today Tonight and Wednesday.

Wind west 20 knots increasing to southwest 25 to 30 near midnight. Wind southwest 25 to 30 Wednesday.

Flurries or showers Wednesday evening.

Temperatures minus 6 rising to plus 2 Wednesday afternoon.

Extended Forecast

Issued 03:00 AM AST 16 December 2025
Thursday Wind northwest 35 knots diminishing to south 20 in the afternoon.
Friday Wind south 35 knots increasing to south 40 to 50.
Saturday Wind south 40 to 50 knots becoming west 40.

Ice Forecast

Issued 10:00 AM EST 16 December 2025 Today Tonight and Wednesday Open water except 5 tenths new ice including 2 tenths grey ice along parts of the coasts. Consolidated 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 16 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 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 5035N 5733W to 4818N 5929W to 4731N
5923W to Newfoundland near 4736N 5740W. Sea ice north then east of
the ice edge.

Ice Coverage

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

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM AST 16 December 2025 Today Tonight and Wednesday At 10:00 a.m. AST today ridge located over southeastern Quebec.
By 8:00 p.m. AST tonight ridge located over the southwestern
Marine District.

At 10:00 a.m. AST Wednesday trough from 979 mb low located on a
line northeast-southwest over Quebec.
By 8:00 p.m. AST Wednesday trough from 978 mb low located on a
line northeast-southwest over the St. Lawrence River.

Marine Weather Statement

Issued 9:38 AM AST 16 December 2025 Gale force northwesterly winds behind a low off the coast of
Northeast Newfoundland, will diminish this morning.

A trough of low pressure over Quebec Wednesday morning will push east
to lie over the St Lawrence River by Wednesday evening. Strong to
gale force southwesterlies will develop early Wednesday ahead of the
trough.

Marine interests are advised that gale warnings are in effect for all
waters except Gulf - Magdalen - southeastern half, Northumberland
Strait, Chaleur - Miscou, and Anticosti - northwestern half.

Freezing spray warnings are in effect for Northumberland Strait -
eastern half, Gulf - Magdalen, Chaleur - Miscou, and Anticosti.

Atlantic - Newfoundland Area

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Marine Weather for Canada

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