Northumberland Strait
Forecast
Marine Forecast
Issued 10:00 AM ADT 18 May 2025
Today Tonight and Monday.
Strong wind warning in effect.
Wind southeast 25 knots diminishing to southeast 15 this evening and to light after midnight. Wind increasing to northeast 15 to 20 Monday afternoon except light over eastern sections.
Rain and fog patches. Risk of thunderstorms today.
Extended Forecast
Issued 03:00 AM ADT 18 May 2025
Tuesday
Wind northeast 25 knots.
Wednesday
Wind northeast 25 knots diminishing to
northeast 15 to 20.
Thursday
Wind northeast 15 to 20 knots.
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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
Issued 10:00 AM ADT 18 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 18 May 2025 Today Tonight and Monday At 10:00 a.m. ADT today low 995 mb located over the St. LawrenceRiver.
By 3:00 a.m. ADT Monday low 993 mb located over southern New
Brunswick.
At 10:00 a.m. ADT today trough from low located from the Gulf of
Maine to East Scotian Slope.
By 3:00 a.m. ADT Monday trough from low located from New Brunswick
to Laurentian Fan.
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 - northeastern half
- Gulf - Magdalen - southwestern 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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