L'Isle-aux-Coudres to Tadoussac

Forecast

Marine Forecast

Issued 03:00 AM EDT 22 August 2017

Today Tonight and Wednesday.

Strong wind warning in effect. Squall watch in effect.

Wind light increasing to southeasterly 10 to 20 knots near noon with gusts to 35 near thunderstorms this evening. Wind becoming southwest 20 to 30 late this evening. Wind southwest 20 to 30 Wednesday.

Showers and thunderstorms beginning this afternoon and ending overnight. Mist dissipating this morning. Visibility as low as 1 mile in mist and in precipitation.

Waves

Issued 03:00 AM EDT 22 August 2017
Today Tonight and Wednesday. Seas 1 metre or less.

Extended Forecast

Issued 06:00 PM EDT 21 August 2017
Wednesday Wind southwest 15 to 25 knots.
Thursday Wind westerly 10 to 20 knots.
Friday 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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Warnings

Warnings (In effect)

Strong wind warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 03:00 AM EDT 22 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.

Watches (In effect)

Squall watch in effect

L'Isle-aux-Coudres to Tadoussac

Issued 02:52 AM EDT 22 August 2017 Conditions are favourable for the development of squalls with wind gusts up to 45 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times.

The heavy thunderstorms will affect these areas this afternoon and this evening.

Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. Consider delaying or postponing travel in areas under the Squall Watch.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 22 August 2017 Today Tonight and Wednesday At 3:00 a.m. EDT today trough located on a line northwest-southeast
over northern Lake Huron.
By 8:00 a.m. EDT Wednesday departing trough located on a line
east-west over Anticosti Island.

At 3:00 p.m. EDT today cold front located on a line
northeast-southwest over Lake Huron.
By 8:00 p.m. EDT Wednesday cold front located on a line
northeast-southwest over New Brunswick.

At 3:00 a.m. EDT today ridge located on a line north-south over
Québec city.
By 3:00 p.m. EDT today departing ridge located on a line north-south
over the Gulf of St. Lawrence.

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