Northumberland Strait - western half
Forecast
Marine Forecast
Issued 10:00 AM ADT 20 May 2025
Today Tonight and Wednesday.
Strong wind warning in effect.
Wind northeast 25 to 30 knots diminishing to northeast 20 late this afternoon and to northeast 10 to 15 Wednesday afternoon.
Showers this morning.
Extended Forecast
Issued 03:00 AM ADT 20 May 2025
Thursday
Wind northeast 15 to 20 knots.
Friday
Wind light increasing to northeast 30 knots
late in the day.
Saturday
Wind east 25 to 30 knots diminishing to
southwesterly 15 late in the day.
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 16 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Northumberland Strait - western half
Issued 10:00 AM ADT 20 May 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 20 May 2025 Today Tonight and Wednesday At 10:00 a.m. ADT today trough located on a line east-west overthe southern Marine District.
By 8:00 p.m. ADT tonight trough located south of the Marine
District.
At 10:00 a.m. ADT Wednesday ridge located from Labrador to New
England.
By 8:00 p.m. ADT Wednesday ridge located on a line north-south
over the Maritimes.
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 - northwestern half
- Kingston to Cornwall
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- Lurcher - eastern half
- Lurcher - western half
- 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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