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Trois-Rivières to Donnacona

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 August 2019

Today Tonight and Tuesday.

Strong wind warning in effect. Squall watch in effect.

Wind light increasing to southwest 15 to 25 knots this morning with gusts to 35 near thunderstorms. Wind becoming west 15 this evening then diminishing to light overnight. Wind increasing to southwest 15 to 20 near noon Tuesday then diminishing to light Tuesday evening.

Showers beginning early this morning and ending this evening with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 19 August 2019
Wednesday Wind light.
Thursday Wind southwest 10 to 15 knots increasing to southwest 15 to 25.
Friday Wind light becoming southwesterly 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 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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Warnings

Warnings (In effect)

Strong wind warning in effect

Trois-Rivières to Donnacona

Issued 03:00 AM EDT 19 August 2019

'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

Trois-Rivières to Donnacona

Issued 03:37 AM EDT 19 August 2019 Conditions are favourable for the development of squalls with wind gusts up to 35 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times.



Proceed with caution as visibility may suddenly be reduced to near zero. 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 19 August 2019 Today Tonight and Tuesday At 3:00 a.m. EDT today dissipating ridge located on a line
northeast-southwest over Anticosti Island.

At 3:00 a.m. EDT today trough located on a line north-south over
Lake Ontario.
By 8:00 p.m. EDT Tuesday trough located on a line north-south over
eastern Newfoundland.

At 8:00 p.m. EDT tonight ridge located from Lake Huron to Lake
Saint-Jean.
By 8:00 p.m. EDT Tuesday ridge located on a line north-south over
Saguenay River.

St. Lawrence - St. Lawrence River Area

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