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Warnings

Forecast

Marine Forecast

Issued 10:00 AM ADT 18 May 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind light becoming south 10 to 15 knots this evening then veering to southwest 15 early Tuesday morning. Wind increasing to southwest 20 to 25 Tuesday evening.

Fog patches forming overnight and dissipating near noon Tuesday.

Waves

Issued 05:00 AM ADT 18 May 2026
Today Tonight and Tuesday. Seas 1 to 2 metres building to 2 to 3 Tuesday evening.

Extended Forecast

Issued 03:00 AM ADT 18 May 2026
Wednesday Wind southwest 20 to 25 knots.
Thursday Wind southwest 20 to 25 knots veering to northwest 20.
Friday Wind light increasing to southwest 20 knots.

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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Weather Conditions

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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

Lurcher

Issued 10:00 AM ADT 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 10:00 AM ADT 18 May 2026 Today Tonight and Tuesday At 10:00 a.m. ADT today departing trough located southeast of the
Marine District.

At 10:00 a.m. ADT today ridge located on a line north-south over
New England.
By 3:00 a.m. ADT Tuesday ridge located on a line north-south over
the eastern Marine District.

Marine Weather Statement

Issued 2:44 AM ADT 18 May 2026 Gale warnings are no longer in effect.

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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