Marine Forecast
Issued 03:00 PM EDT 17 September 2025
Tonight and Thursday.
Strong wind warning in effect.
Wind southwest 20 to 25 knots veering to westerly 10 to 20 this
evening then increasing to westerly 20 to 30 near noon Thursday. Wind
diminishing to northerly 15 Thursday evening.
Showers Thursday late in the day.
Winds
Issued 03:00 PM EDT 17 September 2025
Tonight and Thursday.
Strong wind warning in effect.
Wind southwest 20 to 25 knots veering to westerly 10 to 20 this
evening then increasing to westerly 20 to 30 near noon Thursday. Wind
diminishing to northerly 15 Thursday evening.
Waves
Issued 03:00 PM EDT 17 September 2025
Tonight and Thursday.
Seas 1 metre or less building to 1 to 2 Thursday afternoon then
subsiding to 1 or less Thursday evening.
Weather & Visibility
Issued 03:00 PM EDT 17 September 2025
Tonight and Thursday.
Showers Thursday late in the day.
Ice Forecasts
Issued 10:00 AM EDT 26 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Pointe-des-Monts to Anticosti - southern half
Issued 3:00 PM EDT 17 September 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.
Technical Marine Synopsis
Issued 3:00 PM EDT 17 September 2025 Tonight and Thursday At 3:00 p.m. EDT today departing high 1024 mb located over Sable
Island.
At 8:00 p.m. EDT tonight trough located from Ungava Bay to Lake
Superior.
By 8:00 p.m. EDT Thursday trough located from Havre Saint-Pierre
to Cornwall.
At 8:00 p.m. EDT Thursday approaching ridge located on a line
north-south over northeastern Ontario.