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Pointe-des-Monts to Anticosti - northern half

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 17 March 2026

Today Tonight and Wednesday.

Storm warning in effect.

Wind easterly 20 to 30 knots becoming southeast 25 to 35 early this morning then increasing to southwest 40 to 50 late this morning. Wind diminishing to west 25 to 35 overnight and to west 15 to 25 Wednesday evening.

Showers changing to flurries this afternoon and ending near midnight. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray beginning this evening.

Temperatures plus 1 rising to plus 7 this afternoon then falling to minus 15 Wednesday morning.

Waves

Issued 03:00 AM EDT 17 March 2026
Today Tonight and Wednesday. Over open water seas 1 to 2 metres building to 3 to 4 this afternoon then subsiding to 2 to 3 Wednesday morning.

Extended Forecast

Issued 06:00 PM EDT 16 March 2026
Wednesday Wind west 30 to 40 knots diminishing to west 20 to 30 late in the day.
Thursday Wind southeasterly 10 to 20 knots.
Friday Wind southwest 20 to 30 knots diminishing to northeast 15 late in the day.

Ice Forecast

Issued 10:00 AM EDT 16 March 2026 Today Tonight and Tuesday Open water except 7 tenths new ice including a trace of first-year ice in the extreme northwestern section and in the extreme southeastern section. Consolidated first-year ice along parts of the coast. 

[ 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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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 16 March 2026 Today Tonight and Tuesday

Ice Edge

Ice edge estimated from Nova Scotia near 4437N 6325W to 4419N 6258W
to 4602N 5807W to Newfoundland near 4740N 5814W. Sea ice north of
the ice edge.

Ice Coverage

Open water except 7 tenths new ice including a trace of first-year
ice in the extreme northwestern section and in the extreme
southeastern section. Consolidated first-year ice along parts of the
coast.

Warnings

Warnings (In effect)

Storm warning in effect

Pointe-des-Monts to Anticosti - northern half

Issued 03:00 AM EDT 17 March 2026

'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.

Freezing spray warning in effect

Pointe-des-Monts to Anticosti - northern half

Issued 03:00 AM EDT 17 March 2026

Moderate or severe freezing spray is 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 EDT 17 March 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today intensifying low 978 mb located over western
Lake Saint-Jean.
By 8:00 a.m. EDT Wednesday departing low 946 mb located over
eastern Ungava Bay.

At 3:00 a.m. EDT today ridge located on a line north-south over
western Lake Superior.
By 8:00 p.m. EDT Wednesday ridge located on a line
northwest-southeast over Rimouski.

At 5:00 a.m. EDT Wednesday low located over western Manitoba.
By 8:00 p.m. EDT Wednesday low located over northern Lake Superior.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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