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Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 12 May 2026

Today Tonight and Wednesday.

Wind north 10 to 15 knots backing to westerly 15 this afternoon then diminishing to light early Wednesday morning. Wind increasing to southwest 15 to 20 near noon Wednesday.

Waves

Issued 05:00 AM ADT 12 May 2026
Today Tonight and Wednesday. Seas 1 metre or less.

Extended Forecast

Issued 03:00 AM ADT 12 May 2026
Thursday Wind south 15 knots backing to southeast 20 in the afternoon.
Friday Wind northeast 25 knots.
Saturday Wind northerly 15 knots increasing to southwest 20.

Ice Forecast

Issued 10:00 AM EDT 12 May 2026 Today Tonight and Wednesday 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 12 May 2026 Today Tonight and Wednesday

Ice Edge

Ice edge estimated from Quebec near 5016N 6251W to 4956N 6207W to
4956N 5959W to 5116N 5738W to Quebec near 5125N 5736W. Sea ice north
of the ice edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM ADT 12 May 2026 Today Tonight and Wednesday At 10:00 a.m. ADT today deepening low 1004 mb located near Sable
Island.
By 3:30 p.m. ADT Wednesday departing low 988 mb located north
of Newfoundland.

At 8:00 p.m. ADT tonight ridge located west of the Marine District.
By 8:00 p.m. ADT Wednesday ridge located from the Gaspe Peninsula
to West Scotian Slope.

Marine Weather Statement

Issued 9:39 AM ADT 12 May 2026 A developing low pressure system near Sable Island will move
northeast to lie north of Newfoundland by tomorrow afternoon. Strong
to gale force west to northwesterlies will develop later this evening
in the wake of the low.

Marine interests are advised that gale warnings are in effect for
Banquereau, Laurentian Fan - eastern half, and Cabot Strait.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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