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Marine Forecast

Issued 08:00 PM ADT 21 April 2021

Tonight and Thursday.

Gale warning in effect.

Wind southerly 20 to 25 knots increasing to west 35 Thursday morning.

Showers and fog patches ending Thursday morning with a risk of thunderstorms.


Issued 05:00 PM ADT 21 April 2021
Tonight and Thursday. Seas 1 to 2 metres building to 2 to 3 this evening and to 3 to 5 near noon Thursday.

Extended Forecast

Issued 03:30 PM ADT 21 April 2021
Friday Wind west 35 knots diminishing to west 25 in the afternoon.
Saturday Wind west 25 knots diminishing to west 15 to 20.
Sunday Wind southwest 15 knots increasing to southeast 25.

Ice Forecast

Issued 10:00 AM EDT 21 April 2021 Today Tonight and Thursday Ice free. 

[ Canadian Ice Service ]

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Weather Conditions

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Map of St. Lawrence - St. Lawrence River marine weather areas West Bay of Fundy - 44490 Mont-Louis - 45138 Lake Nipissing - 45152 North Bay Airport Beauport Deschambault Île d'Orléans L'Assomption Trois-Rivières Airport Île aux-Grues Lac Saint-Pierre Montréal-Trudeau Int'l Airport Saint-Hubert Airport Lac Memphrémagog Sainte-Anne-de-Bellevue Saint-Anicet Baie-Comeau Airport Cap-Rouge Île Rouge Pointe de l'Islet Pointe Claveau Sept-Îles Airport Pointe-des-Monts Pointe-Noire Cap-d'Espoir Rivière-la-Madeleine Gaspé Airport La Pocatière Mont-Joli Airport New Carlisle Pointe-au-Père Port Menier Île Bicquette Cap-Chat CFB Bagotville Jonquière Mistook Normandin Roberval Airport Bas Caraquet Bathurst Airport Bouctouche AAFC Charlo Miramichi Fundy Park (Alma) Grand Manan Kouchibouguac Miscou Island Greater Moncton Roméo LeBlanc Int'l Airport Point Lepreau Saint John Airport St. Stephen Brier Island Yarmouth Airport North Cape
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 21 April 2021 Today Tonight and Thursday

Ice Edge

Ice edge is outside the forecast region.

Ice Coverage

Ice free.


Warnings (In effect)

Gale warning in effect


Issued 8:00 PM ADT 21 April 2021

'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.


Technical Marine Synopsis

Issued 8:00 PM ADT 21 April 2021 Tonight and Thursday At 8:00 p.m. ADT tonight low 995 mb located north of Cape Cod.
By 3:30 p.m. ADT Thursday low 981 mb located near Chaleur Bay.

At 8:00 p.m. ADT tonight cold front from low located over Long
By 3:30 p.m. ADT Thursday cold front from low located near Sable

Marine Weather Statement

Issued 7:41 PM ADT 21 April 2021 A low pressure system will approach the region from the southwest
tonight and track into New Brunswick on Thursday. A cold front
associated with this low will track across the marine district
throughout the day on Thursday. Strong to gale force southeasterlies
ahead of the front will become strong to gale force southwesterlies
in its wake.

Marine interests are advised that gale warnings are in effect for all
waters except Chaleur - Miscou - western half and Anticosti - western

St. Lawrence - St. Lawrence River Area

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