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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 18 May 2026

Tonight and Tuesday.

Strong wind warning in effect.

Wind northwesterly 20 to 30 knots diminishing to west 15 early this evening and to light near midnight. Wind increasing to easterly 15 late Tuesday morning and to easterly 15 to 25 Tuesday evening.

Showers Tuesday evening.

Waves

Issued 03:00 PM EDT 18 May 2026
Tonight and Tuesday. Seas 2 metres subsiding to 1 or less after midnight.

Extended Forecast

Issued 06:00 AM EDT 18 May 2026
Wednesday Wind east 20 to 30 knots diminishing to east 10 to 15 in the afternoon then increasing to west 30 to 40 late in the day.
Thursday Wind west 30 to 40 knots diminishing to west 20 to 30.
Friday Wind west 20 to 30 knots becoming northwest 20 late in the day.

Ice Forecast

Issued 10:00 AM EDT 18 May 2026 Today Tonight and Tuesday Ice free.These are the last forecasts for the season. 

[ 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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land station Land Station
Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 18 May 2026 Today Tonight and Tuesday

Ice Edge

Ice edge is outside the forecast region.

Ice Coverage

Ice free.

These are the last forecasts for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 3:00 PM EDT 18 May 2026

'Strong' winds of 20 to 33 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 3:00 PM EDT 18 May 2026 Tonight and Tuesday At 3:00 p.m. EDT today ridge located from Hudson Bay to Sept-Îles.
By 8:00 p.m. EDT Tuesday ridge located on a line northwest-southeast
over the Strait of Belle Isle.

At 3:00 p.m. EDT today low 1008 mb located north of the Great Lakes.
By 8:00 p.m. EDT Tuesday low 998 mb located west of Lake Saint-Jean.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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