Halifax Harbour and Approaches, Canada Marine Forecast, Warnings and Alerts

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Halifax Harbour and Approaches

Marine Forecast

Issued 08:00 PM AST 04 December 2025

Tonight and Friday.

Gale warning in effect.

Wind west 20 knots increasing to northwest 35 late this evening then diminishing to northwest 25 early Friday morning. Wind backing to west 20 Friday afternoon.

Showers changing to flurries this evening and ending Friday morning.

Freezing spray warning in effect.

Freezing spray beginning after midnight and ending Friday afternoon.

Temperatures plus 3 falling to minus 9 Friday morning then rising to minus 4 Friday afternoon.

Winds

Issued 08:00 PM AST 04 December 2025

Tonight and Friday. Gale warning in effect. Wind west 20 knots increasing to northwest 35 late this evening then diminishing to northwest 25 early Friday morning. Wind backing to west 20 Friday afternoon.

Weather & Visibility

Issued 08:00 PM AST 04 December 2025

Tonight and Friday. Showers changing to flurries this evening and ending Friday morning.

Air temperature

Issued 08:00 PM AST 04 December 2025

Tonight and Friday. Temperatures plus 3 falling to minus 9 Friday morning then rising to minus 4 Friday afternoon.

Freezing Spray

Issued 08:00 PM AST 04 December 2025

Tonight and Friday. Freezing spray warning in effect. Freezing spray beginning after midnight and ending Friday afternoon.

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.

Ice Coverage

Ice free.

Warnings (In effect)

Gale warning in effect

Halifax Harbour and Approaches

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.

Freezing spray warning in effect

Halifax Harbour and Approaches

Issued 8:00 PM AST 04 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.

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.

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