Marine Forecast

Issued 08:00 PM AST 21 February 2018

Tonight and Thursday.

Wind southwest 25 knots veering to northwest 25 near midnight then diminishing to north 15 near noon Thursday. Wind diminishing to light Thursday evening.

Showers ending after midnight. Flurries beginning early Thursday evening. Fog banks dissipating near midnight.


Issued 05:00 PM AST 21 February 2018
Tonight and Thursday. Seas 2 to 3 metres subsiding to 1 to 2 Thursday afternoon.

Extended Forecast

Issued 03:30 PM AST 21 February 2018
Friday Wind northeast 15 knots becoming variable 10 to 15 in the afternoon.
Saturday Wind southwest 15 to 20 knots veering to northwest 15 to 20.
Sunday Wind east 15 to 20 knots veering to southeast 25.

Ice Forecast

Issued 10:00 AM EST 21 February 2018 Today Tonight and Thursday 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 Mont-Louis - 45138 Lake Nipissing - 45152 North Bay Airport Beauport Deschambault L'Assomption Trois-Rivières Airport Saint-Hubert Airport Baie-Comeau Airport Cap-Rouge Pointe de l'Islet Sept-Îles Airport Cap-d'Espoir Rivière-la-Madeleine Gaspé Airport La Pocatière Mont-Joli Airport New Carlisle Pointe-au-Père Port Menier CFB Bagotville Jonquière Mistook Normandin Roberval Airport Bas Caraquet Bathurst Airport Bouctouche AAFC Charlo Miramichi Fundy Park (Alma) Grand Manan Kouchibouguac Miscou Island Greater Moncton Roméo LeBlanc Int'l Airport Point Lepreau Saint John Airport St. Stephen Brier Island Yarmouth Airport North Cape Île d'Orléans Île aux-Grues Lac Saint-Pierre Lac Memphremagog Sainte-Anne-de-Bellevue Saint-Anicet Île Rouge Pointe Claveau Pointe-des-Monts Pointe-Noire Île Bicquette Cap-Chat Montréal-Trudeau Int'l Airport
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 21 February 2018 Today Tonight and Thursday

Ice Edge

First ice edge estimated from New Brunswick near 4530N 6515W to Nova
Scotia near 4505N 6500W. Sea ice northeast of the ice edge.

Second ice edge estimated from Nova Scotia near 4430N 6330W to 4500N
6130W to 4530N 5720W to 4725N 5730W to Newfoundland near 4705N
5555W. Sea ice north of the ice edge.

Ice Coverage

Ice free.


No watches or warnings in effect.


Technical Marine Synopsis

Issued 8:00 PM AST 21 February 2018 Tonight and Thursday At 8:00 p.m. AST tonight cold front located over New Brunswick.
By 3:00 a.m. AST Thursday departing cold front located south of
Nova Scotia.

At 3:00 a.m. AST Thursday high 1043 mb located near the Great Lakes.
By 8:00 p.m. AST Thursday high 1042 mb located over southern Quebec.

Marine Weather Statement

Issued 7:40 PM AST 21 February 2018 A cold front over New Brunswick will track southeastward across the
marine district tonight and will lie south of Laurentian Fan by
Thursday morning. Strong to gale force northwesterlies are expected
behind the front. In addition over northern and eastern waters the
northwesterlies will combine with cold temperatures to give freezing

Marine interests are advised that gale warnings are in effect for
Banquereau, Cabot Strait, Gulf-Magdalen, Chaleur-Miscou and
Anticosti. Freezing spray warnings are in effect for eastern
shore-eastern half, Sable-eastern half, Fourchu, Banquereau, Cabot
Strait and all Gulf of St. Lawrence waters.

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