Cornwall to Montréal
Forecast
Marine Forecast
Issued 03:00 AM EDT 20 June 2025
Today Tonight and Saturday.
Strong wind warning in effect.
Wind southwest 15 to 25 knots veering to northwesterly 15 to 25 early this morning then diminishing to west 10 to 15 early this evening. Wind becoming light Saturday morning then becoming southeast 10 to 15 Saturday evening.
Showers Saturday evening with a risk of thunderstorms. Fog banks dissipating early this morning. Visibility 1 mile or less in fog banks and as low as 1 mile in showers.
Extended Forecast
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Weather Conditions
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Ice Conditions
There is no ice forecast issued for this area.
Warnings
Warnings (In effect)
Strong wind warning in effect
Cornwall to Montréal
Issued 03:00 AM EDT 20 June 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 3:00 AM EDT 20 June 2025 Today Tonight and Saturday At 3:00 a.m. EDT today low 998 mb located over Rivière-du-Loup.By 8:00 p.m. EDT Saturday low 995 mb located off Labrador.
At 3:00 a.m. EDT today ridge located from James Bay to the Great
Lakes.
By 8:00 p.m. EDT Saturday ridge located over Québec city.
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
- 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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