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L'Isle-aux-Coudres to Tadoussac

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 11 August 2020

Tonight and Wednesday.

Strong wind warning in effect. Squall watch in effect.

Wind southwest 15 to 25 knots with gusts to 45 near thunderstorms. Wind becoming southwest 15 near midnight then increasing to southwest 15 to 20 near noon Wednesday. Wind diminishing to light Wednesday evening.

Showers ending Wednesday morning with a risk of thunderstorms. Fog banks forming overnight and dissipating Wednesday morning. Visibility as low as 1 mile in showers and 1 mile or less in fog banks.

Waves

Issued 03:00 PM EDT 11 August 2020
Tonight and Wednesday. Seas 1 to 2 metres subsiding to 1 or less late overnight then building to 1 to 2 Wednesday afternoon. Seas subsiding to 1 or less Wednesday evening.

Extended Forecast

Issued 06:00 PM EDT 11 August 2020
Thursday Wind northwesterly 10 to 15 knots.
Friday Wind light increasing to northeast 10 to 20 knots.
Saturday Wind light increasing to northeast 10 to 20 knots.

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Map of St. Lawrence - St. Lawrence River marine weather areas West Bay of Fundy - 44490 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)

Squall warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 9:06 PM EDT 11 August 2020 Squalls with gusts up to 50 knots and frequent lightning are expected in the area.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately. Consider delaying or postponing travel in areas under the squall warning.

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

Strong wind warning in effect

L'Isle-aux-Coudres to Tadoussac

Issued 9:08 PM EDT 11 August 2020

'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 9:07 PM EDT 11 August 2020

Navigators in or near this marine area should be on the lookout for adverse weather conditions and take necessary safety precautions. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 11 August 2020 Tonight and Wednesday At 3:00 p.m. EDT today trough located on a line northeast-southwest
over Lake Saint-Jean.
By 8:00 p.m. EDT Wednesday trough located on a line
northeast-southwest over Anticosti Island.

At 8:00 a.m. EDT Wednesday ridge located on a line north-south
over northwestern Ontario.
By 8:00 p.m. EDT Wednesday ridge located on a line north-south
over Lake Huron.

St. Lawrence - St. Lawrence River Area

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