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Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 11 April 2026

Tonight and Sunday.

Wind northwest 25 knots diminishing to northwest 15 near noon Sunday then backing to southwest 15 early Sunday evening.

Waves

Issued 05:00 PM ADT 11 April 2026
Tonight and Sunday. Seas 1 to 2 metres subsiding to 1 or less near noon Sunday.

Extended Forecast

Issued 03:30 PM ADT 11 April 2026
Monday Wind southwest 25 knots.
Tuesday Wind west 20 knots veering to northerly 15.
Wednesday Wind east 15 knots.

Ice Forecast

Issued 10:00 AM EDT 11 April 2026 Today Tonight and Sunday 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 11 April 2026 Today Tonight and Sunday

Ice Edge

Ice edge estimated from Cape Breton Island near 4607N 5949W to 4606N
5926W to 4712N 5933W to Newfoundland near 4753N 5924W. Sea ice west
of the ice edge.

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 11 April 2026 Tonight and Sunday At 8:00 p.m. ADT tonight intensifying low 1005 mb located over
the eastern Gulf of St. Lawrence.
By 3:00 a.m. ADT Sunday low 1001 mb located over western
Newfoundland.

At 8:00 p.m. ADT Sunday departing low located northeast of
Newfoundland.

At 3:30 p.m. ADT Sunday approaching ridge located west of the
Marine District.

Marine Weather Statement

Issued 7:36 PM ADT 11 April 2026 A low pressure system over the Gulf of St. Lawrence will continue to
intensify as it moves east to lie over Western Newfoundland tonight.
Strong to gale force northwesterlies will develop over eastern waters
tonight in the wake of the low.

Marine interests are advised that gale warnings are in effect for
Fourchu, Banquereau, Laurentian Fan, Cabot Strait, Gulf-Magdalen and
Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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