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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 12 October 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind southwesterly 10 to 15 knots increasing to northeast 30 early 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 03:30 PM 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 St. Lawrence - St. Lawrence River marine weather areas Grand Manan New Carlisle Pointe-au-Père Fundy Park (Alma) Port Menier Miramichi Île Bicquette Charlo Cap-Chat Bathurst Airport CFB Bagotville Jonquière Mistook Normandin Roberval Airport Île-d'Orléans - Quai de St-Jean Deschambault North Bay Airport Beauport L'Isle-aux-Grues Bas Caraquet Lake Nipissing - 45152 Pointe-des-Monts L'Assomption Baie-Comeau Airport Saint-Anicet Cap-Rouge Sainte-Anne-de-Bellevue Lac Memphrémagog Montréal Metropolitain Airport Île Rouge Montréal-Trudeau Int'l Airport Lac Saint-Pierre Trois-Rivières Airport Pointe de l'Islet Pointe Claveau Sept-Îles Airport Kouchibouguac North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport La Pocatière Miscou Island Mont-Joli Airport
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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 3:30 PM 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 3:30 PM ADT 12 October 2026 Tonight and Tuesday At 3:30 p.m. ADT today departing low 1001 mb located east of
Newfoundland.

At 3:30 p.m. ADT today low 997 mb located over East Scotian Slope.
By 3:00 a.m. ADT Tuesday departing low 992 mb located over the
Grand Banks.

At 3:30 p.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 3:18 PM ADT 12 October 2026 A low pressure system over East Scotian Slope will track east of
Laurentian Fan tonight. Strong to gale force southerlies will switch
to strong to gale force northeasterlies in its wake 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.

Tonight...Winds light increasing to northeast 25 to 30 knots early
this evening. Choppy sea conditions this evening when winds will be
Running against the rising tide. Tuesday...Winds northeast 25 knots
diminishing to northeast 15 knots in the morning then to light 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.

St. Lawrence - St. Lawrence River Area

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