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 19 December 2025

Tonight and Saturday.

Storm warning in effect.

Wind south 35 knots increasing to south 50 late this evening then diminishing to southwest 35 after midnight. Wind diminishing to southwest 25 late overnight then increasing to westerly 35 Saturday morning. Wind diminishing to northwest 25 late Saturday afternoon and to northwest 15 Saturday evening.

Rain this evening.

Temperatures plus 11 falling to plus 1 Saturday morning.

Winds

Issued 08:00 PM AST 19 December 2025

Tonight and Saturday. Storm warning in effect. Wind south 35 knots increasing to south 50 late this evening then diminishing to southwest 35 after midnight. Wind diminishing to southwest 25 late overnight then increasing to westerly 35 Saturday morning. Wind diminishing to northwest 25 late Saturday afternoon and to northwest 15 Saturday evening.

Weather & Visibility

Issued 08:00 PM AST 19 December 2025

Tonight and Saturday. Rain this evening.

Air temperature

Issued 08:00 PM AST 19 December 2025

Tonight and Saturday. Temperatures plus 11 falling to plus 1 Saturday morning.

Ice Forecasts

Issued 10:00 AM EST 19 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 4540N 6136W 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

Ice free.

Warnings (In effect)

Storm warning in effect

Halifax Harbour and Approaches

Issued 8:00 PM AST 19 December 2025

'Storm' force winds of 48 to 63 knots are 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 19 December 2025 Tonight and Saturday At 8:00 p.m. AST tonight intensifying trough located from the
St. Lawrence River to the Gulf of Maine.
By 10:00 a.m. AST Saturday departing trough located over the
southeastern Marine District.

At 8:00 p.m. AST Saturday ridge located over the southwestern
Marine District.

Marine Weather Statement

Issued 7:54 PM AST 19 December 2025 A trough of low pressure just west of the region will continue to
intensify as it tracks across the district tonight to lie east of the
area Saturday afternoon. Gale to storm force southerlies ahead of the
trough will shift to gale to storm force westerlies in its wake.
Winds will diminish over southwestern waters later Saturday as a
ridge of high pressure builds in from the west.

Marine interests are advised that storm warnings are in effect for
all waters except Fundy, Northumberland Strait and Chaleur-Miscou
where gale warnings are in effect.

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

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