Northumberland Strait
Forecast
Marine Forecast
Issued 10:00 AM ADT 10 July 2025
Today Tonight and Friday.
Strong wind warning in effect.
Wind light increasing to southeast 10 to 15 knots early this evening and to east 20 Friday afternoon. Wind diminishing to northeast 15 Friday evening.
Scattered showers Friday with a risk of thunderstorms.
Extended Forecast
Issued 03:00 AM 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
Warnings (In effect)
Strong wind warning in effect
Northumberland Strait
Issued 10:00 AM ADT 10 July 2025'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.
Synopsis
Technical Marine Synopsis
Issued 10:00 AM ADT 10 July 2025 Today Tonight and Friday At 10:00 a.m. ADT today ridge located over the Maritimes.By 3:00 a.m. ADT Friday departing ridge located east of the Marine
District.
At 3:30 p.m. ADT today 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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