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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:30 PM ADT 20 April 2026

Tonight and Tuesday.

Wind southwest 15 knots diminishing to light this evening then becoming northeast 15 late overnight. Wind diminishing to light Tuesday afternoon.

Waves

Issued 05:00 AM ADT 20 April 2026
Today Tonight and Tuesday. Seas 1 to 2 metres subsiding to 1 or less this afternoon.

Extended Forecast

Issued 03:30 PM ADT 20 April 2026
Wednesday Wind light.
Thursday Wind light becoming southwest 15 knots late in the day.
Friday Wind southwest 15 knots becoming northerly 15.

Ice Forecast

Issued 10:00 AM EDT 20 April 2026 Today Tonight and Tuesday Ice free. 

[ Canadian Ice Service ]

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Weather Conditions

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Map of St. Lawrence - St. Lawrence River marine weather areas Miramichi North Cape Port Menier Roberval Airport Normandin Mistook Jonquière CFB Bagotville Cap-Chat Île Bicquette Charlo North Bay Airport Yarmouth Airport Brier Island St. Stephen Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac Kouchibouguac Grand Manan Fundy Park (Alma) Bas Caraquet Bathurst Airport Lac Saint-Pierre Pointe-Noire Île d'Orléans Pointe-des-Monts L'Assomption Sept-Îles Airport Pointe Claveau Pointe de l'Islet Trois-Rivières Airport L'Isle-aux-Grues Deschambault Île Rouge Montréal-Trudeau Int'l Airport Montréal Metropolitain Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Cap-Rouge Saint-Anicet Baie-Comeau Airport La Pocatière Pointe-au-Père New Carlisle Mont-Joli Airport Gaspé Airport Lake Nipissing - 45152 Rivière-la-Madeleine Beauport Cap-d'Espoir
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 20 April 2026 Today Tonight and Tuesday

Ice Edge

First ice edge estimated from Cape Breton Island near 4702N 6025W to
4745N 6115W to Gaspe Peninsula near 4846N 6410W. Sea ice southwest
of the ice edge.

Second ice edge estimated from Quebec near 4920N 6722W to 5005N
6600W to 4945N 6015W to Newfoundland near 4806N 5905W. Sea ice north
of the ice edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:30 PM ADT 20 April 2026 Tonight and Tuesday At 3:30 p.m. ADT today trough located from Labrador to Laurentian
Fan.
By 8:00 p.m. ADT tonight departing trough located east of the
Marine District.

At 8:00 p.m. ADT tonight building ridge located over the western
Marine District.
By 8:00 p.m. ADT Tuesday ridge located over the Maritimes.

Marine Weather Statement

Issued 3:19 PM ADT 20 April 2026 A trough of low pressure located from Labrador to Laurentian Fan this
afternoon will continue to track eastward to lie east of the marine
district by this evening. Strong to gale force northwesterlies in its
wake will ease this evening.

Marine interests are advised that a gale warning is in effect for
Anticosti - southwestern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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