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Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 29 April 2025

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind light increasing to south 15 knots near noon and to southwest 25 early this evening. Wind veering to northwest 30 near noon Wednesday.

Waves

Issued 05:00 AM ADT 29 April 2025
Today Tonight and Wednesday. Seas 1 metre or less building to 1 to 2 this afternoon and to 2 to 3 this evening. Seas building to 3 to 4 late overnight then subsiding to 2 to 3 near noon Wednesday and to 1 to 2 Wednesday evening.

Extended Forecast

Issued 03:00 AM ADT 29 April 2025
Thursday Wind northwest 25 knots diminishing to light late in the day.
Friday Wind light increasing to south 25 knots late in the day.
Saturday Wind southwest 20 knots.

Ice Forecast

Issued 10:00 AM EDT 27 April 2025 Today Tonight and Monday Ice free. 

[ Canadian Ice Service ]

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

Ice Forecasts

Issued 10:00 AM EDT 27 April 2025 Today Tonight and Monday

Ice Edge

First ice edge estimated from Quebec near 4832N 6412W to 4835N 6404W
to 4844N 6402W to Quebec near 4851N 6412W. Sea ice west of the ice
edge.

Second ice edge estimated from Quebec near 5011N 6057W to 4955N
6023W to 5107N 5730W to Newfoundland near 5029N 5728W. Sea ice north
then east of the ice edge.

Ice Coverage

Ice free.

Warnings

Warnings (In effect)

Strong wind warning in effect

Lurcher

Issued 03:00 AM ADT 29 April 2025

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 29 April 2025 Today Tonight and Wednesday At 3:00 a.m. ADT today departing low 1008 mb located over
Laurentian Fan.

At 3:00 a.m. ADT today low 997 mb located over the Great Lakes.
By 3:30 p.m. ADT Wednesday low 989 mb located near Anticosti Island.

Marine Weather Statement

Issued 2:45 AM ADT 29 April 2025 A low pressure system over the Great Lakes will track northeast
towards the marine district today and tonight to lie near Anticosti
Island by Wednesday afternoon. Strong southwesterlies ahead of the
low shift to strong to gale force northwesterlies behind it.

Marine interests are advised that gale warnings are in effect for
Gulf-Magdalen, Chaleur-Miscou and Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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