Montréal to Trois-Rivières

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 southerly 10 to 15 knots this morning and to southerly 15 to 25 near noon with gusts to 45 near thunderstorms. Wind becoming southwest 20 to 30 early this evening with gusts to 45 near thunderstorms this evening. Wind becoming southwest 15 to 25 Wednesday morning then becoming southwest 10 to 20 Wednesday evening.

Showers and thunderstorms today and this evening. A few showers beginning Wednesday evening. Visibility 1 mile or less in precipitation.

Extended Forecast

Issued 06:00 AM EDT 22 August 2017
Thursday Wind westerly 10 to 15 knots.
Friday Wind westerly 10 to 15 knots.
Saturday Wind westerly 10 to 15 knots becoming light.

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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

Montréal to Trois-Rivières

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

Montréal to Trois-Rivières

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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