Marine Forecast
Issued 03:00 AM AST 17 December 2025
Today Tonight and Thursday.
Gale warning in effect.
Wind southwest 25 knots increasing to southwest 35 near noon
then diminishing to northwest 25 overnight. Wind increasing to northwest 35
Thursday morning then diminishing to northwest 15 Thursday afternoon. Wind
backing to southwest 15 Thursday evening.
Showers or flurries overnight and Thursday
morning.
Temperatures minus 1 rising to plus 5 this
evening.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM AST 17 December 2025
Today Tonight and Thursday.
Gale warning in effect.
Wind southwest 25 knots increasing to southwest 35 near noon
then diminishing to northwest 25 overnight. Wind increasing to northwest 35
Thursday morning then diminishing to northwest 15 Thursday afternoon. Wind
backing to southwest 15 Thursday evening.
Strong wind warning program has ended for the season.
Waves
Issued 05:00 PM AST 16 December 2025
Tonight and Wednesday.
Seas 2 to 3 metres subsiding to 1 to 2 after midnight then
building to 2 to 3 near noon Wednesday.
Weather & Visibility
Issued 03:00 AM AST 17 December 2025
Today Tonight and Thursday.
Showers or flurries overnight and Thursday
morning.
Air temperature
Issued 03:00 AM AST 17 December 2025
Today Tonight and Thursday.
Temperatures minus 1 rising to plus 5 this
evening.
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.
Iceberg Bulletin
Issued 1:30 PM EST 16 December 2025 Iceberg Limit
Iceberg limit at 0000 UTC 17 Dec estimated from Newfoundland near
5020N 5628W to 5030N 5515W to 5330N 5200W to 5945N 5730W to 6155N
5330W to 6005N 4945W to 5900N 4600W then northeastward.Iceberg Count
No confirmed icebergs.
Warnings (In effect)
Cabot Strait - southern half
Issued 03:00 AM AST 17 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.
Technical Marine Synopsis
Issued 3:00 AM AST 17 December 2025 Today Tonight and Thursday At 3:00 a.m. AST today trough located on a line northeast-southwest
over Quebec.
By 3:00 a.m. AST Thursday trough located from Newfoundland to
Georges Bank.
Marine Weather Statement
Issued 2:42 AM AST 17 December 2025 A trough of low pressure over Quebec will move southeast and cross
the marine district today and tonight. Strong to gale force
southwesterlies will develop today ahead of the trough and shift to
strong to gale force northwesterlies in its wake.
Marine interests are advised that gale warnings are in effect for all
waters except Northumberland Strait and Chaleur - Miscou.