Northumberland Strait
Forecast
Marine Forecast
Issued 10:00 AM ADT 12 May 2025
Today Tonight and Tuesday.
Strong wind warning in effect.
Wind northwesterly 20 to 25 knots diminishing to westerly 10 to 15 this afternoon then increasing to northwest 15 to 20 early Tuesday morning. Wind diminishing to variable 10 to 15 near noon Tuesday.
Extended Forecast
Issued 03:00 AM ADT 12 May 2025
Wednesday
Wind variable 10 to 15 knots increasing to
southwest 20 in the afternoon.
Thursday
Wind west 20 knots diminishing to variable
15.
Friday
Wind variable 15 knots.
Ice Forecast
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Weather Conditions
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Ice Conditions
Ice Forecasts
Issued 10:00 AM EDT 11 May 2025 Today Tonight and MondayIce Edge
Ice edge estimated from Quebec near 5033N 5925W to 5017N 5904W to Newfoundland near 5049N 5704W. Sea ice north of the ice edge.Ice Coverage
Ice free.
Warnings
Warnings (In effect)
Strong wind warning in effect
Northumberland Strait
Issued 10:00 AM ADT 12 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 12 May 2025 Today Tonight and Tuesday At 10:00 a.m. ADT today low 984 mb located over southern LabradorSea.
By 3:30 p.m. ADT today departing low 984 mb located northeast
of Newfoundland.
At 3:00 a.m. ADT Tuesday trough from low located from Newfoundland
to Lurcher.
By 3:30 p.m. ADT Tuesday trough from low located over the Grand
Banks.
At 3:00 a.m. ADT Tuesday ridge located on a line north-south over
New England.
By 3:30 p.m. ADT Tuesday ridge located on a line north-south over
the Maritimes.
Marine Weather Statement
Issued 2:57 AM ADT 12 May 2025 A low pressure system over the Southern Labrador Sea will slowlytrack eastward today. Strong to gale force west to northwesterly
winds will gradually diminish over northern and eastern waters this
afternoon.
Gale warnings are in effect for Banquereau, Cabot Strait, Gulf -
Magdalen - northeastern half and Anticosti.
St. Lawrence - St. Lawrence River Area
- Anticosti - northeastern half
- Anticosti - southwestern half
- 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
Another Region
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