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Grand Manan

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 21 June 2025

Today Tonight and Sunday.

Strong wind warning in effect.

Wind west 10 to 15 knots backing to southwest 15 overnight then increasing to southerly 25 Sunday morning. Wind diminishing to west 15 Sunday evening.

Scattered showers Sunday afternoon and evening. Fog patches forming Sunday afternoon.

Waves

Issued 05:00 PM ADT 20 June 2025
Tonight and Saturday. Seas 1 to 2 metres subsiding to 1 early Saturday morning.

Extended Forecast

Issued 03:00 AM ADT 21 June 2025
Monday Wind light.
Tuesday Wind southwest 15 to 20 knots.
Wednesday Wind northwest 15 knots.

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

Ice Forecasts

Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Grand Manan

Issued 03:00 AM ADT 21 June 2025

'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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 21 June 2025 Today Tonight and Sunday At 3:00 a.m. ADT today low 993 mb located over eastern Anticosti
Island.
By 3:00 a.m. ADT Sunday departing low 996 mb located over Labrador
Sea.

At 3:30 p.m. ADT today ridge located over Quebec.
By 3:00 a.m. ADT Sunday ridge located from Labrador to Georges Bank.

At 3:00 a.m. ADT Sunday approaching low 1000 mb located over
southern Quebec.

Marine Weather Statement

Issued 2:50 AM ADT 21 June 2025 A low pressure system over Eastern Anticosti will continue to move
northeast to lie over the Labrador Sea by tonight. Strong to gale
force west to northwest winds will diminish through the day today.

Marine interests are advised that gale warnings are in effect for
Cabot Strait - northern half, Gulf - Magdalen and Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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