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Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 18 January 2026

Tonight and Monday.

Wind light increasing to northeast 15 knots late this evening and to north 25 late overnight. Wind diminishing to northwest 15 early Monday morning and to light near noon Monday. Wind increasing to southwest 25 Monday evening.

Showers changing to snow this evening and ending Monday morning. Flurries Monday late in the day. Visibility 1 mile or less in snow.

Temperatures plus 4 falling to minus 2 Monday afternoon.

Waves

Issued 05:00 PM AST 18 January 2026
Tonight and Monday. Seas 1 metre or less building to 1 to 2 late overnight then subsiding to 1 or less near noon Monday.

Extended Forecast

Issued 03:30 PM AST 18 January 2026
Tuesday Wind west 25 knots.
Wednesday Wind northwest 25 knots diminishing to southwest 15.
Thursday Wind southwest 25 knots.

Ice Forecast

Issued 10:00 AM EST 18 January 2026 Today Tonight and Monday Open water except 5 tenths new ice including 1 tenth grey ice along parts of the coast in the northeastern section. 

[ 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 18 January 2026 Today Tonight and Monday

Ice Edge

First ice edge estimated from New Brunswick near 4532N 6507W to Nova
Scotia near 4500N 6510W. Sea ice east of the ice edge.

Second ice edge estimated from Nova Scotia near 4435N 6327W to 4432N
6251W to 4539N 5917W to 4704N 6000W to 4825N 6224W to 5039N 5807W to
4759N 5937W to Newfoundland near 4738N 5919W. Sea ice northwest then
east of the ice edge.

Ice Coverage

Open water except 5 tenths new ice including 1 tenth grey ice along
parts of the coast in the northeastern section.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM AST 18 January 2026 Tonight and Monday At 8:00 p.m. AST tonight intensifying low 1002 mb located southwest
of Georges Bank.
By 3:30 p.m. AST Monday low 976 mb located over eastern
Newfoundland.

At 3:30 p.m. AST Monday approaching trough located over the Gulf
of Maine.

Marine Weather Statement

Issued 7:50 PM AST 18 January 2026 A developing low pressure system will approach the marine district
from the southwest tonight. The low will intensify as it tracks
northeastward to the south of Nova Scotia Monday morning to lie over
Newfoundland Monday afternoon. Winds will increase to strong to gale
force northeasterlies north of the low's track and gale to storm
force southwesterlies south of the low's track.

Marine interests are advised that storm warnings are in effect for
East Scotian Slope - southern half and Laurentian Fan. Gale warnings
are in effect for Georges Bank, southwestern shore, LaHave Bank, West
Scotian Slope, eastern shore, Sable, East Scotian Slope - northern
half, Fourchu, Banquereau, and Cabot Strait.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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