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Pointe-des-Monts to Anticosti - southern half

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 18 April 2026

Tonight and Sunday.

Gale warning in effect.

Wind southeasterly 20 to 30 knots diminishing to south 15 Sunday morning then increasing to west 25 to 35 Sunday afternoon.

Rain Sunday becoming snow or rain. Visibility as low as 1 mile in precipitation.

Waves

Issued 03:00 PM EDT 18 April 2026
Tonight and Sunday. Seas 1 to 2 metres subsiding to 1 late overnight then building to 2 to 3 Sunday evening.

Extended Forecast

Issued 06:00 AM EDT 18 April 2026
Monday Wind west 25 to 35 knots diminishing to west 15 to 25 late in the day.
Tuesday Wind westerly 15 knots diminishing to light.
Wednesday Wind east 10 to 20 knots.

Ice Forecast

Issued 10:00 AM EDT 18 April 2026 Today Tonight and Sunday Open water. 

[ 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 April 2026 Today Tonight and Sunday

Ice Edge

First ice edge estimated from Cape Breton Island near 4702N 6025W to
4745N 6115W to Gaspe Peninsula near 4846N 6410W. Sea ice southwest
of the ice edge.

Second ice edge estimated from Quebec near 4838N 6811W to 5005N
6600W to 4945N 6015W to Newfoundland near 4806N 5905W. Sea ice north
of the ice edge.

Ice Coverage

Open water.

Warnings

Warnings (In effect)

Gale warning in effect

Pointe-des-Monts to Anticosti - southern half

Issued 3:00 PM EDT 18 April 2026

'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.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 18 April 2026 Tonight and Sunday At 3:00 p.m. EDT today departing high 1027 mb located over
Newfoundland.

At 3:00 p.m. EDT today deepening trough located from Lake Huron
to James Bay.
By 8:00 p.m. EDT Sunday trough located on a line north-south over
the Gaspe Peninsula.

At 8:00 p.m. EDT Sunday approaching high 1026 mb located over
northwestern Ontario.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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