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Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 21 March 2025

Tonight and Saturday.

Wind northeast 15 to 20 knots backing to northwest 25 late overnight then to west 20 near noon Saturday. Wind backing to southwest 25 early Saturday evening.

Showers and fog patches changing to flurries Saturday morning and ending near noon Saturday.

Waves

Issued 05:00 PM ADT 21 March 2025
Tonight and Saturday. Seas 1 metre or less building to 1 to 2 late overnight.

Extended Forecast

Issued 03:30 PM ADT 21 March 2025
Sunday Wind northwest 25 knots.
Monday Wind light increasing to southeast 15 to 20 knots late in the day.
Tuesday Wind southeast 20 knots veering to southwest 20.

Ice Forecast

Issued 10:00 AM EDT 21 March 2025 Today Tonight and Saturday Open water. 

[ Canadian Ice Service ]

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

Ice Forecasts

Issued 10:00 AM EDT 21 March 2025 Today Tonight and Saturday

Ice Edge

Ice edge estimated from Nova Scotia near 4521N 6100W to 4549N 5906W
to Newfoundland near 4736N 5740W. Sea ice north and west of the ice
edge.

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 21 March 2025 Tonight and Saturday At 8:00 p.m. ADT tonight low 990 mb located over the western
Marine District.
By 3:00 a.m. ADT Saturday low 988 mb located over Nova Scotia.

At 10:00 a.m. ADT Saturday low 986 mb located over Cabot Strait.
By 3:30 p.m. ADT Saturday low 985 mb located over southwestern
Newfoundland.

Marine Weather Statement

Issued 7:49 PM ADT 21 March 2025 A low pressure system approaching from the southwest marine district
this evening will track across Nova Scotia tonight then move into
Newfoundland later on Saturday. Strong to gale force west to
northwesterlies are expected behind this system.

Marine interests are advised that gale warnings are in effect for
Grand Manan, Lurcher, Browns Bank, Georges Bank, LaHave Bank, West
Scotian Slope, East Scotian Slope, Banquereau, Laurentian Fan, Cabot
Strait - northern half, and Gulf-Magdalen - northeastern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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