Marine Forecast

Issued 03:30 PM ADT 26 September 2017

Tonight and Wednesday.

Wind southwest 10 to 15 knots increasing to south 15 to 20 Wednesday evening.

A few showers and fog patches. Risk of thunderstorms late this afternoon.


Issued 05:00 PM ADT 26 September 2017
Tonight and Wednesday. Seas 2 to 3 metres.

Extended Forecast

Issued 03:30 PM ADT 26 September 2017
Thursday Wind southwest 20 knots veering to northwest 15 in the afternoon.
Friday Wind northerly 20 to 25 knots backing to northwest 15 to 20 late in the day.
Saturday Wind northerly 15 knots.

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Weather Conditions

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Map of St. Lawrence - St. Lawrence River marine weather areas Mont-Louis - 45138 Lake Nipissing - 45152 North Bay Airport Beauport Deschambault L'Assomption Trois-Rivières Airport Saint-Hubert Airport Baie-Comeau Airport Cap-Rouge Pointe de l'Islet Sept-Îles Airport Cap-d'Espoir Rivière-la-Madeleine Gaspé Airport La Pocatière Mont-Joli Airport New Carlisle Pointe-au-Père Port Menier 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 Île d'Orléans Île aux-Grues Lac Saint-Pierre Lac Memphremagog Sainte-Anne-de-Bellevue Saint-Anicet Île Rouge Pointe Claveau Pointe-des-Monts Pointe-Noire Île Bicquette Cap-Chat Montréal-Trudeau Int'l Airport
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Ice Conditions

Ice Forecasts

Issued 10:00 AM EDT 20 June 2017 Forecasts have ended for the season.

No watches or warnings in effect.


Technical Marine Synopsis

Issued 3:30 PM ADT 26 September 2017 Tonight and Wednesday At 3:30 p.m. ADT today trough from 997 mb low located from
Newfoundland to Prince Edward Island.
By 8:00 p.m. ADT tonight trough from 994 mb low located from the
Avalon Peninsula to Nova Scotia.

At 10:00 a.m. ADT Wednesday low 1002 mb located over western Quebec.
By 8:00 p.m. ADT Wednesday warm front from low located from
Anticosti Island to Cabot Strait.

Marine Weather Statement

Issued 3:21 PM ADT 26 September 2017 At 3:00 PM ADT hurricane Lee was located near 29.9 north, 54.1 west
or about 560 nautical miles east-southeast of Bermuda. Maximum
sustained winds were 90 knots, the central pressure was 975
millibars. Lee is moving west at about 10 knots.

Lee is not expected to affect Canadian forecast waters at this time.

At 3:00 PM ADT hurricane Maria was located near 33.8 north, 73.3 west
or about 142 nautical miles southeast of Cape Hatteras. Maximum
sustained winds were 65 knots, central pressure was 970 millibars.
Maria is moving north at 6 knots.

Maria will slow down tonight and pass east of the coast of North
Carolina. It will then turn northeast and approach the Southern Grand
Banks late this week. Minimal effects are expected for the Maritimes
except strong to possible gale force northerlies for southernmost

St. Lawrence - St. Lawrence River Area

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