Larsen Marine Forecast, Warnings and Alerts

Canada

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Current Conditions

Canada 7 Day High and Low Temperatures Forecast

10 Day Forecast

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Laurentian Fan

Marine Forecast

Issued 10:00 AM ADT 05 April 2026

Today Tonight and Monday.

Gale warning in effect.

Wind variable 10 to 15 knots increasing to southeast 15 to 20 near noon and to southerly 30 early this evening. Wind increasing to southwest 35 Monday afternoon then diminishing to west 30 Monday evening.

Showers beginning this afternoon changing to rain Monday afternoon with a risk of thunderstorms. Fog patches forming this afternoon and dissipating Monday evening.

Winds

Issued 10:00 AM ADT 05 April 2026

Today Tonight and Monday. Gale warning in effect. Wind variable 10 to 15 knots increasing to southeast 15 to 20 near noon and to southerly 30 early this evening. Wind increasing to southwest 35 Monday afternoon then diminishing to west 30 Monday evening.

Waves

Issued 05:00 AM ADT 05 April 2026

Today Tonight and Monday. Seas 2 to 3 metres subsiding to 1 to 2 this morning then building to 2 to 3 early this evening. Seas building to 3 to 4 near noon Monday.

Weather & Visibility

Issued 10:00 AM ADT 05 April 2026

Today Tonight and Monday. Showers beginning this afternoon changing to rain Monday afternoon with a risk of thunderstorms. Fog patches forming this afternoon and dissipating Monday evening.

Ice Forecasts

Issued 10:00 AM EDT 5 April 2026 Today Tonight and Monday

Ice Edge

Ice edge estimated from Cape Breton Island near 4520N 6059W to 4530N
5900W to 4630N 5830W to Newfoundland near 4735N 5911W. Sea ice north
then west of the ice edge.

Ice Coverage

Ice free.

Iceberg Bulletin

Issued 2:30 PM EDT 4 April 2026

Iceberg Limit

Iceberg limit at 0000 UTC 5 Apr estimated from Newfoundland near
4640N 5330W to 4605N 5230W to 4630N 4600W to 4725N 4430W to 4950N
4510W to 5305N 4755W to 5900N 5600W to 6015N 5245W to 5850N 5000W
then eastward.

Iceberg Count

No confirmed icebergs.

Warnings (In effect)

Gale warning in effect

Laurentian Fan

Issued 10:00 AM ADT 05 April 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.

Technical Marine Synopsis

Issued 10:00 AM ADT 5 April 2026 Today Tonight and Monday At 10:00 a.m. ADT today ridge located over the eastern Marine
District.
By 3:30 p.m. ADT today departing ridge located over the Grand Banks.

At 10:00 a.m. ADT today trough located over New England.
By 3:00 a.m. ADT Monday trough located from Anticosti Island to
Georges Bank.

At 3:30 p.m. ADT Monday trough located from Newfoundland to East
Scotian Slope.

Marine Weather Statement

Issued 9:50 AM ADT 5 April 2026 A trough of low pressure will approach from the west this morning and
slowly track across the district today and tonight to lie over
southeastern waters by Monday afternoon. Winds will increase to
strong to gale force southerlies ahead of the trough, then veer to
strong to possibly gale force west or northwest winds in its wake.

Marine interests are advised that gale warnings are in effect for
East Scotian Slope, Fourchu, Banquereau, Laurentian Fan, Cabot
Strait, Gulf-Magdalen, and Anticosti.

Outlook for the start-up of the eastern shore lobster fishery.

Wednesday..Winds northeast 20 knots diminishing to west 15 knots late
in the day. Sea state 1-2 metres diminishing to 1 metre or less in
the afternoon.
Thursday..Light winds becoming southwest 15 to 20
Knots in the afternoon. Sea state 1 metre or less.

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