Cabot Strait - southern half Marine Forecast and Alerts

Canada

N.America Satellite

Canada Radar

Current Conditions

Canada 7 Day High and Low Temperatures Forecast

10 Day Forecast

Lightning Danger Radar

Lightning Strikes Radar

Cabot Strait - southern half

Marine Forecast

Issued 08:00 PM ADT 21 March 2026

Tonight and Sunday.

Gale warning in effect.

Wind southeasterly 20 to 25 knots diminishing to variable 10 to 15 near midnight then increasing to northwest 40 late overnight. Wind diminishing to northwest 25 Sunday afternoon and to northwest 15 Sunday evening.

Periods of snow ending overnight. Visibility 1 mile or less in snow.

Freezing spray warning in effect.

Over open water freezing spray beginning Sunday morning.

Temperatures near minus 3.

Winds

Issued 08:00 PM ADT 21 March 2026

Tonight and Sunday. Gale warning in effect. Wind southeasterly 20 to 25 knots diminishing to variable 10 to 15 near midnight then increasing to northwest 40 late overnight. Wind diminishing to northwest 25 Sunday afternoon and to northwest 15 Sunday evening.

Waves

Issued 05:00 PM ADT 21 March 2026

Tonight and Sunday. Over open water seas 2 to 3 metres building to 3 to 5 after midnight then subsiding to 2 to 3 Sunday evening.

Weather & Visibility

Issued 08:00 PM ADT 21 March 2026

Tonight and Sunday. Periods of snow ending overnight. Visibility 1 mile or less in snow.

Air temperature

Issued 08:00 PM ADT 21 March 2026

Tonight and Sunday. Temperatures near minus 3.

Freezing Spray

Issued 08:00 PM ADT 21 March 2026

Tonight and Sunday. Freezing spray warning in effect. Over open water freezing spray beginning Sunday morning.

Ice Forecasts

Issued 10:00 AM EDT 21 March 2026 Today Tonight and Sunday

Ice Edge

Ice edge estimated from Nova Scotia near 4437N 6325W to 4419N 6258W
to 4549N 5848W to Newfoundland near 4740N 5814W. Sea ice north of
the ice edge.

Ice Coverage

Open water except 3 tenths first-year ice in the extreme
northwestern section. Consolidated grey-white ice in a few sheltered
bays.

Iceberg Bulletin

Issued 2:30 PM EDT 21 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 22 Mar estimated from Newfoundland near
4640N 5310W to 4620N 4700W to 4630N 4430W to 4830N 4300W to 5300N
4800W to 5900N 5600W to 6120N 5400W to 5815N 4855W then eastward.

Iceberg Count

No confirmed icebergs.

Warnings (In effect)

Gale warning in effect

Cabot Strait - southern half

Issued 8:00 PM ADT 21 March 2026

'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

Cabot Strait - southern half

Issued 8:00 PM ADT 21 March 2026

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 ADT 21 March 2026 Tonight and Sunday At 8:00 p.m. ADT tonight low 1000 mb located over eastern Nova
Scotia.
By 3:30 p.m. ADT Sunday departing low 984 mb located northeast
of Newfoundland.

At 10:00 a.m. ADT Sunday ridge located over the western Marine
District.
By 8:00 p.m. ADT Sunday ridge located over the central Marine
District.

At 8:00 p.m. ADT Sunday approaching trough located on a line
east-west over southern New England.

Marine Weather Statement

Issued 7:47 PM ADT 21 March 2026 A low pressure system over Eastern Nova Scotia will intensify and
track northeastward tonight and Sunday. Winds will increase to strong
to gale force northwesterlies in the wake of this system tonight with
winds expected to reach storm force over Northeastern Banquereau.

Winds will diminish during the day Sunday as the low moves northeast
of Newfoundland and a ridge of high pressure moves into the marine
district. Over southwestern waters late Sunday, winds will increase
as a trough over Southern New England approaches.

Marine interests are advised that a storm warning is in effect for
Banquereau - northeastern half. Gale warnings are in effect for
eastern shore - eastern half, Sable - eastern half, East Scotian
Slope - eastern half, Fourchu, Banquereau - southwestern half,
Laurentian Fan, Cabot Strait, Gulf-Magdalen - eastern half and
Anticosti - eastern half.

Marine interests are also advised that freezing spray warnings are in
effect for Cabot Strait, Gulf-Magdalen - eastern half, and Anticosti.

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