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Northumberland Strait - western half

Warnings

Forecast

Marine Forecast

Issued 08:00 PM AST 14 December 2025

Tonight and Monday.

Gale warning in effect.

Wind northerly 15 to 20 knots increasing to north 30 near midnight and to northwest 35 Monday afternoon.

Flurries ending Monday morning.

Freezing spray warning in effect.

Freezing spray beginning Monday morning.

Temperatures minus 1 falling to minus 6 Monday morning.

Extended Forecast

Issued 03:30 PM AST 14 December 2025
Tuesday Wind northwest 35 knots diminishing to northwesterly 25 in the afternoon then backing to southwest 25 late in the day.
Wednesday Wind southwest 30 knots.
Thursday Wind northwest 35 knots diminishing to south 25.

Ice Forecast

Issued 10:00 AM EST 14 December 2025 Today Tonight and Monday 1 tenth new ice except 7 tenths new ice including 2 tenths grey ice along parts of the coasts. Consolidated grey ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of St. Lawrence - St. Lawrence River marine weather areas Cap-Chat Mont-Joli Airport Bathurst Airport Île Bicquette Charlo Port Menier Miramichi Pointe-au-Père Fundy Park (Alma) New Carlisle Grand Manan Bas Caraquet CFB Bagotville Jonquière Mistook Normandin Roberval Airport Deschambault Beauport North Bay Airport Trois-Rivières Airport Lake Nipissing - 45152 Kouchibouguac Baie-Comeau Airport Île d'Orléans Saint-Anicet Sainte-Anne-de-Bellevue Cap-Rouge Lac Memphrémagog Montréal Metropolitain Airport Montréal-Trudeau Int'l Airport Île Rouge Lac Saint-Pierre L'Isle-aux-Grues L'Assomption Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts North Cape Pointe-Noire Yarmouth Airport Cap-d'Espoir Brier Island Rivière-la-Madeleine St. Stephen Gaspé Airport Saint John Airport Point Lepreau Greater Moncton Roméo LeBlanc Int'l Airport Miscou Island Kouchibouguac La Pocatière
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EST 14 December 2025 Today Tonight and Monday

Ice Edge

First ice edge estimated from 4723N 6136W to 4738N 6112W to 4744N
6124W to 4734N 6159W to 4706N 6212W to 4706N 6147W to 4723N 6136W.
Sea ice within the ice edge.

Second ice edge estimated from Nova Scotia near 4551N 6201W to
Prince Edward Island near 4621N 6211W. Sea ice west of the ice edge.

Third ice edge estimated from Prince Edward Island near 4628N 6231W
to 4640N 6329W to 4736N 6409W to 4904N 6404W to 4925N 6516W to 4916N
6703W to 4956N 6635W to Anticosti Island near 4924N 6336W. Sea ice
west then north of the ice edge.

Fourth ice edge estimated from Anticosti Island near 4945N 6301W to
4946N 5954W to 5106N 5804W to Newfoundland near 5029N 5728W. Sea ice
north of the ice edge.

Ice Coverage

1 tenth new ice except 7 tenths new ice including 2 tenths grey ice
along parts of the coasts. Consolidated grey ice along parts of the
coasts.

Warnings

Warnings (In effect)

Gale warning in effect

Northumberland Strait - western half

Issued 8:00 PM AST 14 December 2025

'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.

Freezing spray warning in effect

Northumberland Strait - western half

Issued 8:00 PM AST 14 December 2025

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 8:00 PM AST 14 December 2025 Tonight and Monday At 8:00 p.m. AST tonight intensifying low 997 mb located over
Georges Bank.
By 3:00 a.m. AST Monday low 988 mb located near Sable Island.

At 3:30 p.m. AST Monday low 965 mb located over southeastern
Newfoundland.

Marine Weather Statement

Issued 7:45 PM AST 14 December 2025 An intensifying low pressure system over Georges Bank will move to
lie over Sable Island tonight and over Southeastern Newfoundland
Monday afternoon. Gale to possibly storm force southwest winds over
the southern slope waters tonight will shift to gale to storm force
northwesterlies behind the low.

Marine interests are advised that storm warnings are in effect for
Banquereau and Cabot Strait. Gale warnings are in effect for all
remaining waters except Fundy and Grand Manan.

Freezing spray warnings are in effect for Fundy, Grand Manan,
Northumberland Strait, Gulf - Magdalen, Chaleur - Miscou, and
Anticosti.

St. Lawrence - St. Lawrence River Area

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Marine Weather for Canada

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