Northumberland Strait - western half

Forecast

Marine Forecast

Issued 11:53 AM ADT 21 July 2017

Today Tonight and Saturday.

Wind variable 10 to 15 knots with gusts to 40 near thunderstorms this afternoon. Wind becoming northwesterly 15 to 20 late overnight. Wind northwesterly 15 to 20 Saturday.

Showers or thunderstorms beginning this afternoon changing to a few showers early this evening and ending Saturday morning. Risk of thunderstorms tonight and Saturday morning.

Extended Forecast

Issued 03:00 AM ADT 21 July 2017
Sunday Wind westerly 15 to 20 knots.
Monday Wind variable 10 to 15 knots.
Tuesday Wind northeasterly 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

Watches (In effect)

Squall watch in effect

Northumberland Strait

Issued 1:32 PM ADT 21 July 2017 Conditions are favourable for the development of squalls with wind gusts up to 40 knots and frequent lightning.

Potentially severe thunderstorms with gust of up to 40 kts are expected this afternoon and may persist into this evening.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.

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 10:00 AM ADT 21 July 2017 Today Tonight and Saturday At 10:00 a.m. ADT today trough located over the Gulf of
St. Lawrence.
By 3:00 a.m. ADT Saturday trough located over the southeastern
Marine District.

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