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Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 23 April 2025

Today Tonight and Thursday.

Wind light becoming west 15 knots early this afternoon then veering to northwest 10 to 15 early this evening. Wind diminishing to light Thursday morning.

Fog banks dissipating this afternoon.

Waves

Issued 05:00 AM ADT 23 April 2025
Today Tonight and Thursday. Seas 1 to 2 metres subsiding to 1 or less this afternoon.

Extended Forecast

Issued 03:00 AM ADT 23 April 2025
Friday Wind southwest 10 to 15 knots diminishing to light in the afternoon.
Saturday Wind southeast 15 knots increasing to southwest 30.
Sunday Wind southwest 30 knots veering to northwest 25.

Ice Forecast

Issued 10:00 AM EDT 22 April 2025 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 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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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 22 April 2025 Today Tonight and Wednesday

Ice Edge

First ice edge estimated from New Brunswick near 4700N 6449W to
4836N 6358W 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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 23 April 2025 Today Tonight and Thursday At 3:00 a.m. ADT today low 1014 mb located near Nova Scotia.
By 8:00 p.m. ADT tonight low 1014 mb located over northern
Banquereau.

At 3:30 p.m. ADT Thursday departing low 1014 mb located over the
Grand Banks.

At 3:00 a.m. ADT Thursday approaching ridge located over New
England.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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