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Gulf - Magdalen

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 10 March 2026

Today Tonight and Wednesday.

Wind southwest 30 knots veering to west 20 to 25 this morning then diminishing to northwest 15 near noon. Wind becoming variable 10 to 15 this afternoon then becoming north 15 near midnight. Wind veering to northeast 15 to 20 Wednesday morning then to east 20 Wednesday evening.

Snow over northern sections this evening. Snow near midnight. Snow Wednesday late in the day. Visibility 1 mile or less in snow.

Temperatures plus 3 falling to minus 7 near noon Wednesday.

Waves

Issued 05:00 PM ADT 09 March 2026

Gulf - Magdalen - northeastern half

Tonight and Tuesday. Over open water seas 1 metre building to 1 to 2 near midnight then subsiding to 1 or less Tuesday evening.

Gulf - Magdalen - southwestern half

Tonight and Tuesday. Mainly ice covered.

Extended Forecast

Issued 03:00 AM ADT 10 March 2026
Thursday Wind easterly 35 knots becoming southwest 35 in the afternoon.
Friday Wind westerly 35 knots.
Saturday Wind westerly 35 knots becoming east 30 to 40 late in the day.

Ice Forecast

Issued 10:00 AM EDT 9 March 2026 Today Tonight and Tuesday 7 tenths grey-white ice including 1 tenth first-year ice except 7 tenths first-year ice in the southwestern section. Consolidated first-year ice along parts of the coasts. 

[ Canadian Ice Service ]

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

Ice Forecasts

Issued 10:00 AM EDT 9 March 2026 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from 4420N 6720W to 4430N 6635W to 4330N 6615W to
4315N 6515W to 4600N 5749W to 4708N 5834W to 4630N 5615W to
Newfoundland near 4640N 5530W. Sea ice north of the ice edge.

Ice Coverage

7 tenths grey-white ice including 1 tenth first-year ice except 7
tenths first-year ice in the southwestern section. Consolidated
first-year ice along parts of the coasts.

 

Iceberg Bulletin

Issued 3:08 PM EDT 9 March 2026

Iceberg Limit

Iceberg limit at 0000 UTC 10 Mar estimated from Newfoundland near
4640N 5310W to 4520N 4930W to 4555N 4410W to 4815N 4300W to 5930N
5700W to 6150N 5400W to 5850N 5035W to 5810N 4530W then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM ADT 10 March 2026 Today Tonight and Wednesday At 3:00 a.m. ADT today trough located over the St. Lawrence River.
By 10:00 a.m. ADT today departing trough located over southeastern
Labrador.

At 8:00 p.m. ADT tonight building high located over Quebec.
By 8:00 p.m. ADT Wednesday departing ridge from high located from
Labrador to Newfoundland.

At 8:00 p.m. ADT tonight approaching low located west of the
Maritimes.

Marine Weather Statement

Issued 2:12 AM ADT 10 March 2026 A trough of low pressure will pass just north of the marine district
this morning. Strong to gale force winds ahead of the trough are
expected to diminish through the day as it pulls away and a weak
ridge builds into the district.

Marine interests are advised that a gale warning is in effect for
Anticosti - northwestern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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