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Gulf - Magdalen - southwestern half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 12 April 2026

Today Tonight and Monday.

Wind northwest 25 knots diminishing to northwest 15 early this afternoon and to light early this evening. Wind increasing to south 20 to 25 early Monday morning.

Showers or flurries Monday late in the day. Fog patches forming Monday evening.

Temperatures near zero.

Waves

Issued 05:00 AM ADT 12 April 2026

Gulf - Magdalen - eastern half

Today Tonight and Monday. Seas 3 to 4 metres subsiding to 2 to 3 early this evening and to 1 to 2 near midnight.

Gulf - Magdalen - western half

Today Tonight and Monday. Seas 2 to 3 metres subsiding to 1 to 2 early this evening.

Extended Forecast

Issued 03:00 AM ADT 12 April 2026
Tuesday Wind south 20 to 25 knots diminishing to northwest 15 to 20 in the morning.
Wednesday Wind northeast 20 knots veering to southeast 15.
Thursday Wind south 30 knots.

Ice Forecast

Issued 10:00 AM EDT 12 April 2026 Today Tonight and Monday Open water except 1 tenth first-year ice along parts of the Prince Edward Island coast and in the northwestern section. Consolidated rotten 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 12 April 2026 Today Tonight and Monday

Ice Edge

Ice edge estimated from Cape Breton Island near 4607N 5949W to 4631N
5919W to 4844N 6156W to 4919N 6025W to Newfoundland near 4753N
5924W. Sea ice west then northeast of the ice edge.

Ice Coverage

Open water except 1 tenth first-year ice along parts of the Prince
Edward Island coast and in the northwestern section. Consolidated
rotten first-year ice along parts of the coasts.

 

Iceberg Bulletin

Issued 2:30 PM EDT 11 April 2026

Iceberg Limit

Iceberg limit at 0000 UTC 12 Apr estimated from Newfoundland near
4655N 5400W to 4510N 5245W to 4505N 4650W to 4620N 4255W to 5000N
4425W to 5305N 4755W to 5900N 5600W to 6015N 5245W to 5735N 4735W
then eastward.

Iceberg Count

No confirmed icebergs.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:00 AM ADT 12 April 2026 Today Tonight and Monday At 10:00 a.m. ADT today low 999 mb located over eastern
Newfoundland.
By 8:00 p.m. ADT tonight low 992 mb located east of Newfoundland.

At 10:00 a.m. ADT today ridge located west of the Marine District.
By 10:00 a.m. ADT Monday departing ridge located over the
southeastern Marine District.

At 8:00 p.m. ADT Monday approaching low 1000 mb located near the
St. Lawrence River.

Marine Weather Statement

Issued 9:44 AM ADT 12 April 2026 A low pressure system over Eastern Newfoundland will slowly pull away
from the marine district by tonight. Strong to gale force
northwesterlies will continue over eastern waters today in the wake
of the low.

Marine interests are advised that gale warnings are in effect for
Fourchu, Banquereau, Laurentian Fan, Cabot Strait, and Gulf-Magdalen
- northeastern half.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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