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Forecast

Marine Forecast

Issued 03:30 PM ADT 13 March 2026

Tonight and Saturday.

Wind northwesterly 20 knots backing to southwest 15 to 20 early this evening then to southeast 25 Saturday morning. Wind veering to southwest 25 Saturday afternoon then to northwest 25 Saturday evening.

Periods of snow Saturday morning and afternoon changing to scattered showers and fog patches. Visibility 1 mile or less in snow and in fog patches.

Temperatures minus 3 rising to plus 3 Saturday evening.

Waves

Issued 05:00 PM ADT 13 March 2026
Tonight and Saturday. Seas 1 to 2 metres.

Extended Forecast

Issued 03:30 PM ADT 13 March 2026
Sunday Wind northwest 20 knots diminishing to light in the afternoon.
Monday Wind southeast 20 knots increasing 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 3:30 PM ADT 13 March 2026 Tonight and Saturday At 3:30 p.m. ADT today departing low 980 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 3:30 p.m. ADT today ridge located southwest of the Marine
District.
By 10:00 a.m. ADT Saturday departing ridge located over the
Grand Banks.

Marine Weather Statement

Issued 3:19 PM ADT 13 March 2026 A deepening 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, Gulf-Magdalen, Chaleur-Miscou - eastern
half and Anticosti.

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

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