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Chaleur - Miscou - western half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM AST 17 December 2025

Today Tonight and Thursday.

Wind southwesterly 15 to 20 knots diminishing to light this afternoon then increasing to west 20 this evening. Wind increasing to west 30 after midnight then diminishing to west 20 Thursday morning. Wind diminishing to light near noon Thursday then increasing to southwest 20 to 25 Thursday evening.

Flurries this afternoon and this evening. Visibility 1 mile or less in flurries.

Temperatures minus 6 rising to plus 2 near midnight then falling to minus 3 Thursday morning. Temperatures rising to plus 2 Thursday evening.

Extended Forecast

Issued 03:00 AM AST 17 December 2025
Friday Wind south 25 knots increasing to southerly 35 in the morning and to southerly 45 late in the day.
Saturday Wind westerly 35 knots.
Sunday Wind variable 10 to 15 knots increasing to southeast 25.

Ice Forecast

Issued 10:00 AM EST 16 December 2025 Today Tonight and Wednesday Open water except 5 tenths new ice including 2 tenths grey ice along parts of the coasts. Consolidated grey ice along parts of the coasts. 

[ 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 Montréal Metropolitain 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 EST 16 December 2025 Today Tonight and Wednesday

Ice Edge

First ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to 5035N 5733W to 4818N 5929W to 4731N
5923W to Newfoundland near 4736N 5740W. Sea ice north then east of
the ice edge.

Ice Coverage

Open water except 5 tenths new ice including 2 tenths grey ice along
parts of the coasts. Consolidated grey ice along parts of the
coasts.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM AST 17 December 2025 Today Tonight and Thursday At 3:00 a.m. AST today trough located on a line northeast-southwest
over Quebec.
By 3:00 a.m. AST Thursday trough located from Newfoundland to
Georges Bank.

Marine Weather Statement

Issued 2:42 AM AST 17 December 2025 A trough of low pressure over Quebec will move southeast and cross
the marine district today and tonight. Strong to gale force
southwesterlies will develop today ahead of the trough and shift to
strong to gale force northwesterlies in its wake.

Marine interests are advised that gale warnings are in effect for all
waters except Northumberland Strait and Chaleur - Miscou.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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