Grand Manan, Canada Marine Forecast, Warnings and Alerts

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Grand Manan

Marine Forecast

Issued 03:00 AM ADT 14 September 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind light increasing to westerly 15 knots near noon and to northwest 25 early this evening. Wind veering to north 20 near midnight then diminishing to north 15 Tuesday morning. Wind diminishing to light Tuesday afternoon.

Scattered showers ending near midnight. Fog patches dissipating this afternoon.

Winds

Issued 03:00 AM ADT 14 September 2026

Today Tonight and Tuesday. Strong wind warning in effect. Wind light increasing to westerly 15 knots near noon and to northwest 25 early this evening. Wind veering to north 20 near midnight then diminishing to north 15 Tuesday morning. Wind diminishing to light Tuesday afternoon.

Waves

Issued 05:00 AM ADT 14 September 2026

Today Tonight and Tuesday. Seas 1 metre or less building to 1 to 2 early this evening then subsiding to 1 or less Tuesday morning.

Weather & Visibility

Issued 03:00 AM ADT 14 September 2026

Today Tonight and Tuesday. Scattered showers ending near midnight. Fog patches dissipating this afternoon.

Ice Forecasts

Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Grand Manan

Issued 03:00 AM ADT 14 September 2026

'Strong' winds of 20 to 33 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.

Technical Marine Synopsis

Issued 3:00 AM ADT 14 September 2026 Today Tonight and Tuesday At 3:00 a.m. ADT today trough located from the Gaspe Peninsula
to Lurcher.
By 3:00 a.m. ADT Tuesday departing trough located from Newfoundland
to Laurentian Fan.

At 8:00 p.m. ADT tonight ridge located over southern Ontario.
By 8:00 p.m. ADT Tuesday ridge located from the Gulf of St. Lawrence
to the Gulf of Maine.

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