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Gulf - Magdalen - northeastern half

Warnings

Forecast

Marine Forecast

Issued 08:00 PM ADT 30 April 2025

Tonight and Thursday.

Storm warning in effect.

Wind northwest 35 knots increasing to northwest 40 to 50 late this evening then diminishing to northwest 35 early Thursday morning. Wind diminishing to northwest 25 Thursday afternoon.

Showers changing to flurries near midnight and ending Thursday morning.

Waves

Issued 05:00 PM ADT 30 April 2025
Tonight and Thursday. Seas 2 to 3 metres building to 4 to 6 this evening then subsiding to 3 to 4 Thursday morning. Seas subsiding to 2 to 3 Thursday afternoon.

Extended Forecast

Issued 03:30 PM ADT 30 April 2025
Friday Wind light becoming southeast 15 knots late in the day.
Saturday Wind south 25 knots.
Sunday Wind southwest 25 knots diminishing to light late in the day.

Ice Forecast

Issued 10:00 AM EDT 30 April 2025 Today Tonight and Thursday Ice free. 

[ Canadian Ice Service ]

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

Ice Forecasts

Issued 10:00 AM EDT 30 April 2025 Today Tonight and Thursday

Ice Edge

Ice edge estimated from Quebec near 5013N 6207W to 4959N 6152W to
4959N 6028W to 5053N 5806W to Newfoundland near 5029N 5728W. Sea ice
north then east of the ice edge.

Ice Coverage

Ice free.

 

Iceberg Bulletin

Issued 3:25 PM EDT 30 April 2025

Iceberg Limit

Iceberg limit at 0000 UTC 1 May estimated from Newfoundland near
4723N 5503W to 4040N 5210W to 4100N 4720W to 4530N 3335W to 4710N
3245W to 5915N 5605W to 6035N 5500W to 5920N 4925W then eastwards.

Western iceberg limit at 0000 UTC 1 May estimated from Quebec near
5020N 6115W to Newfoundland near 4805N 5845W.

Iceberg Count

No confirmed icebergs.
Warnings

Warnings (In effect)

Storm warning in effect

Gulf - Magdalen - northeastern half

Issued 8:00 PM ADT 30 April 2025

'Storm' force winds of 48 to 63 knots are 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 30 April 2025 Tonight and Thursday At 8:00 p.m. ADT tonight low 993 mb located east of Anticosti
Island.
By 3:30 p.m. ADT Thursday low 994 mb located over eastern
Newfoundland.

At 8:00 p.m. ADT Thursday approaching ridge located on a line
north-south over the western Marine District.

Marine Weather Statement

Issued 7:40 PM ADT 30 April 2025 A low pressure system east of Anticosti Island will track east
tonight to lie over Eastern Newfoundland by Thursday afternoon.
Strong southwesterlies ahead of the low shift to strong to storm
force northwesterlies behind it. Winds will gradually diminish on
Thursday as high pressure builds in.

Marine interests are advised that a storm warning is in effect for
Gulf-Magdalen - northeastern half. Gale warnings are in effect for
Banquereau, Laurentian Fan - northeastern half, Cabot Strait,
Gulf-Magdalen - southwestern half, Chaleur-Miscou, and Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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