Northumberland Strait
Forecast
Marine Forecast
Issued 08:00 PM ADT 10 July 2025
Tonight and Friday.
Wind southeast 10 to 15 knots backing to east 15 Friday afternoon then becoming variable 10 to 15 Friday evening.
Scattered showers Friday with a risk of thunderstorms.
Extended Forecast
Issued 03:30 PM ADT 10 July 2025
Saturday
Wind northerly 10 to 15 knots diminishing to
light late in the day.
Sunday
Wind light.
Monday
Wind southwest 10 to 15 knots.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 8:00 PM ADT 10 July 2025 Tonight and Friday At 8:00 p.m. ADT tonight departing ridge located over the GrandBanks.
At 8:00 p.m. ADT tonight low 1014 mb located near Cape Cod.
By 3:30 p.m. ADT Friday low 1013 mb located near Eastern Shore.
St. Lawrence - St. Lawrence River Area
- Anticosti
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou
- Cornwall to Montréal
- Donnacona to Beauport
- Fundy
- Grand Manan
- Gulf - Magdalen - northern half
- Gulf - Magdalen - southern 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
- 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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