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Warnings

Forecast

Marine Forecast

Issued 03:00 AM ADT 19 May 2026

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind southwest 10 to 15 knots increasing to southwest 20 this afternoon then diminishing to west 15 Wednesday evening.

Fog patches dissipating this evening.

Waves

Issued 05:00 AM ADT 19 May 2026
Today Tonight and Wednesday. Seas 1 to 2 metres building to 2 to 3 this evening.

Extended Forecast

Issued 03:00 AM ADT 19 May 2026
Thursday Wind southwest 20 to 25 knots veering to northwest 20 in the afternoon.
Friday Wind northerly 15 knots backing to west 20.
Saturday Wind west 20 knots diminishing to light.

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

Lurcher

Issued 03:00 AM ADT 19 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 AM ADT 19 May 2026 Today Tonight and Wednesday At 3:00 a.m. ADT today departing ridge located on a line north-south
over the eastern Marine District.

At 3:00 a.m. ADT today warm front located from Quebec to Sable
Island.
By 8:00 p.m. ADT tonight quasi-stationary warm front located from
New Brunswick to Banquereau.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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