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Northumberland Strait - western half

Warnings

Forecast

Marine Forecast

Issued 10:00 AM AST 08 December 2025

Today Tonight and Tuesday.

Wind westerly 25 knots diminishing to west 15 to 20 near noon Tuesday.

Scattered flurries ending this evening. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray.

Temperatures near minus 8.

Extended Forecast

Issued 03:00 AM AST 08 December 2025
Wednesday Wind south 20 knots veering to southwest 25 in the afternoon.
Thursday Wind south 25 knots increasing to south 35.
Friday Wind west 35 knots.

Ice Forecast

Issued 10:00 AM EST 7 December 2025 Today Tonight and Monday Open water except 9 tenths new 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 7 December 2025 Today Tonight and Monday

Ice Edge

First ice edge estimated from New Brunswick near 4511N 6609W to
4508N 6549W to 4518N 6513W to Nova Scotia near 4510N 6445W. Sea ice
northeast of the ice edge.

Second ice edge estimated from Nova Scotia near 4546N 6254W to 4558N
6310W to Prince Edward Island near 4558N 6250W. Sea ice west of the
ice edge.

Third 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.

Fourth ice edge estimated from Prince Edward Island near 4630N 6319W
to 4741N 6431W to 4827N 6402W 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.

Fifth ice edge estimated from Anticosti Island near 4949N 6317W to
4946N 5954W to Quebec near 5125N 5736W. Sea ice north of the ice
edge.

Ice Coverage

Open water except 9 tenths new ice along parts of the coasts.

Warnings

Warnings (In effect)

Freezing spray warning in effect

Northumberland Strait - western half

Issued 10:00 AM AST 08 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 10:00 AM AST 8 December 2025 Today Tonight and Tuesday At 10:00 a.m. AST today intensifying low 1004 mb located over
Sable Island.
By 3:00 a.m. AST Tuesday low 975 mb located east of Newfoundland.

At 8:00 p.m. AST tonight approaching ridge located over the
Great Lakes.

Marine Weather Statement

Issued 9:55 AM AST 8 December 2025 A low pressure system over Sable Island is tracking south of Nova
Scotia today and will lie near Southeastern Newfoundland this
evening. Gale to storm force northwesterlies will develop across the
district today in the wake of the low. In addition, freezing spray is
expected over most northern waters late Monday as these
northwesterlies usher in cold air.

Marine interests are advised that a storm warning is in effect for
Banquereau - northern half. Gale warnings are in effect for all
remaining waters except Fundy and Northumberland Strait - western
half.

Freezing spray warnings are in effect for Fundy, Grand Manan,
Lurcher, southwestern shore, eastern shore, Fourchu, Cabot Strait,
and all gulf of
St. Lawrence waters.

St. Lawrence - St. Lawrence River Area

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