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Gulf - Magdalen - western half

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 12 March 2025

Tonight and Thursday.

Wind northwest 20 to 25 knots diminishing to north 15 late overnight and to light Thursday morning. Wind becoming south 15 Thursday evening.

Freezing spray warning in effect.

Over open water freezing spray ending overnight.

Temperatures near minus 6.

Waves

Issued 05:00 PM ADT 12 March 2025

Gulf - Magdalen - northeastern half

Tonight and Thursday. Seas 3 to 4 metres subsiding to 2 to 3 near midnight and to 1 to 2 Thursday morning.

Gulf - Magdalen - southwestern half

Tonight and Thursday. Seas 2 to 3 metres subsiding to 1 to 2 near midnight and to 1 or less near noon Thursday.

Extended Forecast

Issued 03:30 PM ADT 12 March 2025
Friday Wind southwest 20 to 25 knots.
Saturday Wind southwest 15 to 20 knots becoming variable 15.
Sunday Wind southwest 15 knots increasing to southwest 25.

Ice Forecast

Issued 10:00 AM EDT 12 March 2025 Today Tonight and Thursday Open water except 3 tenths new ice including 1 tenth 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 Lake Nipissing - 45152 North Bay Airport Beauport Deschambault Île d'Orléans L'Assomption Trois-Rivières Airport L'Isle-aux-Grues Lac Saint-Pierre Montréal-Trudeau Int'l Airport Saint-Hubert Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Saint-Anicet Baie-Comeau Airport Cap-Rouge Île Rouge Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts Pointe-Noire Cap-d'Espoir Rivière-la-Madeleine Gaspé Airport La Pocatière Mont-Joli Airport New Carlisle Pointe-au-Père Port Menier Île Bicquette Cap-Chat CFB Bagotville Jonquière Mistook Normandin Roberval Airport Bas Caraquet Bathurst Airport Charlo Miramichi Fundy Park (Alma) Grand Manan Kouchibouguac Kouchibouguac Miscou Island Greater Moncton Roméo LeBlanc Int'l Airport Point Lepreau Saint John Airport St. Stephen Brier Island Yarmouth Airport North Cape
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 12 March 2025 Today Tonight and Thursday

Ice Edge

First ice edge estimated from New Brunswick near 4523N 6527W to
4515N 6515W to 4430N 6615W to Nova Scotia near 4407N 6612W. Sea ice
east of the ice edge.

Second ice edge estimated from Nova Scotia near 4519N 6058W to 4545N
5800W to 4715N 5700W to Newfoundland near 4707N 5538W. Sea ice north
of the ice edge.

Ice Coverage

Open water except 3 tenths new ice including 1 tenth first-year ice
in the southwestern section. Consolidated first-year ice along parts
of the coasts.

 

Iceberg Bulletin

Issued 3:40 PM EDT 12 March 2025

Iceberg Limit

Iceberg limit at 0000 UTC 13 Mar estimated from Newfoundland near
4652N 5307W to 4815N 4645W to 5020N 4550W to 5340N 4745W to 5900N
5620W to 6020N 5530W then eastwards.

Western iceberg limit at 0000 UTC 13 Mar estimated from Quebec near
5030N 6015W to Newfoundland near 4850N 5755W.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Freezing spray warning in effect

Gulf - Magdalen - western half

Issued 8:00 PM ADT 12 March 2025

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 8:00 PM ADT 12 March 2025 Tonight and Thursday At 8:00 p.m. ADT tonight trough located from Newfoundland to
Laurentian Fan.
By 10:00 a.m. ADT Thursday departing trough located southeast of
Laurentian Fan.

At 8:00 p.m. ADT tonight building ridge located over the
St. Lawrence River.
By 3:30 p.m. ADT Thursday ridge located over the Maritimes.

Marine Weather Statement

Issued 7:43 PM ADT 12 March 2025 Marine interests are advised that freezing spray warnings are in
effect for Cabot Strait, Gulf-Magdalen, Chaleur-Miscou, and
Anticosti.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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