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Gulf - Magdalen - western half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 11 March 2025

Today Tonight and Wednesday.

Gale warning in effect.

Wind northwest 15 knots diminishing to light this morning then increasing to southeast 20 this afternoon. Wind increasing to south 25 to 30 early this evening and to south 35 near midnight. Wind veering to west 25 to 35 Wednesday morning then becoming northwest 25 Wednesday afternoon.

Showers beginning near midnight becoming flurries or showers Wednesday morning and ending Wednesday morning. Visibility 1 mile or less in precipitation.

Freezing spray warning in effect.

Over open water freezing spray beginning Wednesday afternoon.

Temperatures minus 4 rising to plus 2 Wednesday morning then falling to minus 6 Wednesday evening.

Waves

Issued 05:00 AM ADT 11 March 2025
Today Tonight and Wednesday. Seas 1 metre or less building to 1 to 2 this evening and to 2 to 3 late overnight.

Extended Forecast

Issued 03:00 AM ADT 11 March 2025
Thursday Wind northwest 15 knots diminishing to light in the morning.
Friday Wind southwest 15 to 20 knots diminishing to southwest 10 to 15.
Saturday Wind southwest 15 to 20 knots.

Ice Forecast

Issued 9:59 AM EDT 10 March 2025 Today Open water except 3 tenths new ice including 1 tenth first-year ice in the western section. Consolidated first-year ice along the Prince Edward Island coast. 

[ 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 9:59 AM EDT 10 March 2025 Today

Ice Edge

First ice edge estimated from New Brunswick near 4523N 6527W to
4511N 6517W to 4409N 6639W to Nova Scotia near 4417N 6608W. Sea ice
northeast of the ice edge.

Second ice edge estimated from Nova Scotia near 4519N 6058W to 4547N
5829W to 4720N 5632W to Newfoundland near 4706N 5547W. Sea ice north
of the ice edge.

Ice Coverage

Open water except 3 tenths new ice including 1 tenth first-year ice
in the western section. Consolidated first-year ice along the Prince
Edward Island coast.

 

Iceberg Bulletin

Issued 2:58 PM EDT 10 March 2025

Iceberg Limit

Iceberg limit at 0000 UTC 11 Mar estimated from Newfoundland near
4709N 5258W to 4845N 4730W to 5025N 4505W to 5335N 4745W to 5900N
5620W to 6030N 5525W to 5725N 4600W then eastwards.

Western iceberg limit at 0000 UTC 11 Mar estimated from Quebec near
5035N 5955W to Newfoundland near 4925N 5800W.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Gale warning in effect

Gulf - Magdalen - western half

Issued 03:00 AM ADT 11 March 2025

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Freezing spray warning in effect

Gulf - Magdalen - western half

Issued 03:00 AM ADT 11 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 3:00 AM ADT 11 March 2025 Today Tonight and Wednesday At 3:00 a.m. ADT today ridge located from Labrador to West Scotian
Slope.
By 3:00 a.m. ADT Wednesday ridge located east of the Marine
District.

At 10:00 a.m. ADT today trough located from Quebec to the Great
Lakes.
By 10:00 a.m. ADT Wednesday trough located from the Quebec Lower
North Shore to West Scotian Slope.

At 8:00 p.m. ADT Wednesday departing trough located from Labrador
Coast to Laurentian Fan.

Marine Weather Statement

Issued 2:38 AM ADT 11 March 2025 A low pressure system will approach the district from the west today
and its associated trough will move over marine waters tonight.
Strong to gale force southerly winds ahead of the trough will shift
to strong to gale force westerlies in its wake.

Marine interests are advised that gale warnings are in effect for
Cabot Strait - northern half, Gulf-Magdalen, Chaleur-Miscou and
Anticosti. Freezing spray warnings are in effect for Gulf-Magdalen,
Chaleur-Miscou and Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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