Marine Forecast

Issued 03:30 PM ADT 17 August 2017

Tonight and Friday.

Strong wind warning in effect.

Wind westerly 25 to 30 knots diminishing to northwest 15 this evening and to light near midnight. Wind light Friday.

Fog patches forming Friday evening.


Issued 05:00 PM ADT 17 August 2017
Tonight and Friday. Seas 1 to 2 metres subsiding to 1 or less after midnight.

Extended Forecast

Issued 03:30 PM ADT 17 August 2017
Saturday Wind southeast 25 knots.
Sunday Wind southwest 15 knots.
Monday Wind westerly 10 to 15 knots.

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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 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.

Warnings (In effect)

Strong wind warning in effect


Issued 3:30 PM ADT 17 August 2017

'Strong' winds of 20 to 33 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.


Technical Marine Synopsis

Issued 3:30 PM ADT 17 August 2017 Tonight and Friday At 3:30 p.m. ADT today Hurricane Gert 978 mb located at 44.6N 46.7W.
By 3:30 a.m. ADT Friday departing Post-tropical Storm Gert 990 mb
located at 48.4N 39.8W.

At 3:30 p.m. ADT today low 1002 mb located over the eastern Gulf
of St. Lawrence.
By 10:00 a.m. ADT Friday low 994 mb located east of Newfoundland.

At 8:00 p.m. ADT tonight ridge located on a line north-south over
New England.
By 8:00 p.m. ADT Friday ridge located on a line north-south over
Nova Scotia.

Marine Weather Statement

Issued 3:11 PM ADT 17 August 2017 A low pressure system over the Eastern Gulf of St Lawrence will
Merge with another system over Newfoundland tonight and intensify
giving strong to gale force westerlies over much of the district.
Winds will gradually diminish on Friday as a ridge of high pressure
builds in from the west.

Marine interests are advised that gale warnings are in effect for
eastern shore, Fourchu, Banquereau-northern half and Cabot Strait.

Marine interests are also advised that the combination of cool air,
warm waters and favourable atmospheric conditions will give the
potential for waterspout development over the Gulf of St Lawrence
waters for the remainder of this afternoon and evening.

At 3:30 P.M. ADT, hurricane Gert was located near 44.6 degrees
North and 46.7 degrees west, or 295 nautical miles east-southeast
Of Cape Race, Newfoundland. Gert was moving east-northeast at
31 knots. Maximum sustained winds were 70 knots and central
Pressure was 978 MB.
Gert is expected to become a post-tropical system by this evening.

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