Chaleur - Miscou - western half
Forecast
Marine Forecast
Issued 10:00 AM ADT 18 August 2026
Today Tonight and Wednesday.
Wind light today tonight and Wednesday.
Showers this evening with a risk of thunderstorms. Fog patches dissipating Wednesday morning.
Extended Forecast
Issued 03:00 AM ADT 18 August 2026
Thursday
Wind light.
Friday
Wind light.
Saturday
Wind northwest 15 knots diminishing to
light.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 19 May 2026 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 10:00 AM ADT 18 August 2026 Today Tonight and Wednesday At 10:00 a.m. ADT today trough located from Anticosti Island toBrowns Bank.
By 8:00 p.m. ADT tonight trough located from Labrador to Georges
Bank.
At 3:30 p.m. ADT Wednesday trough located from Anticosti Island
to East Scotian Slope.
St. Lawrence - St. Lawrence River Area
- Anticosti - northwestern half
- Anticosti - southeastern half
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou - eastern half
- Chaleur - Miscou - western half
- Cornwall to Montréal
- Donnacona to Beauport
- Fundy
- Grand Manan
- Gulf - Magdalen - western half
- Kingston to Cornwall
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- Lurcher
- L'Isle-aux-Coudres to Tadoussac
- Montréal to Trois-Rivières
- Northumberland Strait - western half
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
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ATOM