Marine Forecast
Issued 08:00 PM AST 04 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northwest 35 knots diminishing to west 25 early Friday
afternoon.
Flurries ending Friday morning. Visibility 1 mile or less
in flurries.
Freezing spray warning in effect.
Freezing spray.
Temperatures minus 1 falling to minus 10 near
midnight.
Strong wind warning program has ended for the season.
Winds
Issued 08:00 PM AST 04 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northwest 35 knots diminishing to west 25 early Friday
afternoon.
Strong wind warning program has ended for the season.
Weather & Visibility
Issued 08:00 PM AST 04 December 2025
Tonight and Friday.
Flurries ending Friday morning. Visibility 1 mile or less
in flurries.
Air temperature
Issued 08:00 PM AST 04 December 2025
Tonight and Friday.
Temperatures minus 1 falling to minus 10 near
midnight.
Freezing Spray
Issued 08:00 PM AST 04 December 2025
Tonight and Friday.
Freezing spray warning in effect.
Freezing spray.
Ice Forecasts
Issued 10:00 AM EST 4 December 2025 Today Tonight and Friday Ice Edge
Ice edge estimated from Gaspe Peninsula near 4856N 6712W to 4956N
6635W to 4958N 6014W to Quebec near 5125N 5737W. Sea ice north of
the ice edge.
Warnings (In effect)
Northumberland Strait - western half
Issued 8:00 PM AST 04 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.
Northumberland Strait - western half
Issued 8:00 PM AST 04 December 2025Moderate 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.
Technical Marine Synopsis
Issued 8:00 PM AST 4 December 2025 Tonight and Friday At 8:00 p.m. AST tonight trough located from Labrador to Browns
Bank.
By 3:00 a.m. AST Friday trough located from the Quebec Lower North
Shore to Laurentian Fan.
At 3:30 p.m. AST Friday low 966 mb located east of Newfoundland.
At 3:30 p.m. AST Friday ridge located west of the Marine District.
Marine Weather Statement
Issued 7:42 PM AST 4 December 2025 An intensifying trough of low pressure extending from Labrador to
Browns Bank will move eastward to lie east of the marine district by
Friday morning. Gale to storm force northwesterlies will develop in
the wake of the trough.
Marine interests are advised that storm warnings are in effect for
Banquereau, Cabot Strait, Gulf-Magdalen - northeastern half, and
Anticosti - southeastern half. Gale warnings are in effect for
remaining waters.
Marine interests are also advised that freezing spray warnings are in
effect for all waters except Georges Bank, West Scotian Slope, East
Scotian Slope, and Laurentian Fan.