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Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 13 March 2026

Tonight and Saturday.

Wind southwesterly 20 knots increasing to southeast 30 late overnight then becoming westerly 30 late Saturday morning. Wind veering to northwest 25 Saturday evening.

Rain and fog patches Saturday.

Waves

Issued 05:00 PM ADT 13 March 2026
Tonight and Saturday. Seas 2 to 3 metres subsiding to 1 to 2 this evening then building to 2 to 3 Saturday afternoon.

Extended Forecast

Issued 03:30 PM ADT 13 March 2026
Sunday Wind northwest 25 knots diminishing to light in the afternoon.
Monday Wind southeast 25 knots veering to south 30.
Tuesday Wind south 35 knots.

Ice Forecast

Issued 10:00 AM EDT 13 March 2026 Today Tonight and Saturday Open water. 

[ 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 13 March 2026 Today Tonight and Saturday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4603N 5814W to 4722N 5805W to 4643N 5628W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 13 March 2026 Tonight and Saturday At 8:00 p.m. ADT tonight departing low 975 mb located northeast
of Newfoundland.

At 3:00 a.m. ADT Saturday low 999 mb located over southern Ontario.
By 8:00 p.m. ADT Saturday low 1000 mb located over eastern Nova
Scotia.

At 8:00 p.m. ADT tonight ridge located over the southwestern
Marine District.
By 10:00 a.m. ADT Saturday departing ridge located over the
Grand Banks.

Marine Weather Statement

Issued 7:39 PM ADT 13 March 2026 A deep low pressure system northeast of Newfoundland will continue to
pull away this evening. Meanwhile a ridge of high pressure will cross
the district tonight and into Saturday morning. Strong to gale force
westerlies will diminish this evening or overnight as the ridge moves
through.

A second low pressure system will approach the region from the west
on Saturday to lie over Eastern Nova Scotia by evening. Strong to
gale force easterlies will develop ahead of the low then shift to
strong to gale force westerlies in its wake.

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

Marine interests are also advised that freezing spray warnings are in
effect for Cabot Strait - northern half and all Gulf of St. Lawrence
waters except Northumberland Strait - eastern half.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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