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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 12 October 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind light increasing to northeast 30 knots this evening then diminishing to east 15 Tuesday morning. Wind diminishing to light Tuesday afternoon then increasing to southeast 25 Tuesday evening.

Scattered showers ending Tuesday morning. Rain Tuesday evening.

Waves

Issued 05:00 AM ADT 12 October 2026
Today Tonight and Tuesday. Seas 1 to 2 metres subsiding to 1 or less near noon then building to 2 this evening. Seas subsiding to 1 near noon Tuesday.

Extended Forecast

Issued 03:00 AM ADT 12 October 2026
Wednesday Wind southeast 30 knots diminishing to westerly 25 in the afternoon.
Thursday Wind northwest 25 knots.
Friday Wind variable 15 knots increasing to southeast 25.

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Map of Atlantic - Maritimes marine weather areas Baie-Comeau Airport Halifax Harbour - 44258 West Chedabucto Bay – 44489 North Cape Winterland Branch Hill Summerside Wreckhouse East Scotia Slope - 44137 Stephenville St. Lawrence Burgeo Havre-Saint-Pierre Airport Île aux Perroquets Île Rouge Longue-Pointe-de-Mingan Banquereau - 44139 Sept-Îles Airport Port aux Basques LaHave Bank - 44150 Sagona Island Mont-Joli Airport Beaver Island Baccaro Point St. Stephen Rivière-la-Madeleine Saint John Airport Gaspé Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Îles de la Madeleine Airport Miscou Island La Pocatière Kouchibouguac Cap-d'Espoir Grand Manan New Carlisle Fundy Park (Alma) Pointe-au-Père Miramichi Port Menier Charlo Île Bicquette Bathurst Airport Cap-Chat Bas Caraquet East Chedabucto Bay – 44488 Nappan AAFC East Point Charlottetown Airport Yarmouth Airport Pointe-Noire Western Head Tracadie J.A. Douglas McCurdy Sydney Airport Shearwater Airport St.Paul Island Sable Island Parrsboro North Mountain Pointe-des-Monts McNabs Island Lunenburg Kentville AAFC Ingonish Beach Hart Island CFB Greenwood Grand Étang Eskasoni (First Nations) Debert Caribou Point Brier Island
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Ice Conditions

Ice Forecasts

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

Warnings (In effect)

Strong wind warning in effect

Grand Manan

Issued 10:00 AM ADT 12 October 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.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM ADT 12 October 2026 Today Tonight and Tuesday At 10:00 a.m. ADT today low 1001 mb located near the Gaspe
Peninsula.
By 3:30 p.m. ADT today departing low 995 mb located east of
Newfoundland.

At 10:00 a.m. ADT today low 1000 mb located near Lurcher.
By 8:00 p.m. ADT tonight low 992 mb located over Laurentian Fan.

At 10:00 a.m. ADT today high 1025 mb located over Quebec.
By 3:30 p.m. ADT Tuesday high 1022 mb located over the Gaspe
Peninsula.

Marine Weather Statement

Issued 9:44 AM ADT 12 October 2026 A low pressure system will track across slope waters today. Strong to
gale force southerlies will switch to strong to gale force
northeasterlies in its wake on Tuesday and as a ridge moves in from
the northwest.

Marine interests are advised that gale warnings are in effect for
Georges Bank - southern half, West Scotian Slope - southern half,
eastern shore - eastern half, Sable - eastern half, East Scotian
Slope, Fourchu, Banquereau, Laurentian Fan and Cabot Strait.

Outlook for the start-up of the Upper Bay of Fundy lobster fishery.

Today...Winds light increasing to northeast 25 knots this evening.
Choppy sea conditions this evening when winds will be running against
the rising tide.
Tuesday...Winds northeast 30 knots diminishing to northeast 15 to 20
knots in the morning then to east 10 to 15 knots near noon then
increasing to southeast 15 near midnight. Choppy sea conditions in
the morning when winds will run against the rising tide.
Wednesday...Winds southeast 15 knots increasing to 25 knots in the
morning then becoming westerly 20 to 25 knots in the afternoon then
to northwest 25 late in the evening. Choppy sea conditions late in
the day when winds will be running against the ebbing tide.

Atlantic - Maritimes Area

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Marine Weather for Canada

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