Marine Forecast
Issued 03:00 PM EST 04 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northwesterly 20 to 30 knots backing to southwest 15 to 25
near midnight then increasing to southwest 25 to 35 Friday morning. Wind
diminishing to southwest 15 to 25 Friday evening.
Risk of freezing spray Friday afternoon and
evening.
Low tonight minus 12. High Friday minus 5.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 PM EST 04 December 2025
Tonight and Friday.
Gale warning in effect.
Wind northwesterly 20 to 30 knots backing to southwest 15 to 25
near midnight then increasing to southwest 25 to 35 Friday morning. Wind
diminishing to southwest 15 to 25 Friday evening.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 PM EST 04 December 2025
Tonight and Friday.
Seas 1 metre building to 1 to 2 near noon Friday then subsiding
to 1 Friday evening.
Air temperature
Issued 03:00 PM EST 04 December 2025
Tonight and Friday.
Low tonight minus 12. High Friday minus 5.
Freezing Spray
Issued 03:00 PM EST 04 December 2025
Tonight and Friday.
Risk of freezing spray Friday afternoon and
evening.
There is no ice forecast issued for this area.
Warnings (In effect)
L'Isle-aux-Coudres to Tadoussac
Issued 9:03 PM EST 04 December 2025'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 EST 4 December 2025 Tonight and Friday At 3:00 p.m. EST today intensifying low 996 mb located over the
Gulf of St. Lawrence.
By 7:00 p.m. EST Friday low 959 mb located east of Newfoundland.
At 3:00 p.m. EST today ridge located on a line northeast-southwest
over Lake Huron.
By 7:00 p.m. EST Friday ridge located on a line north-south over
Saguenay River.
At 7:00 p.m. EST Friday approaching trough located on a line
northeast-southwest over Lake Superior.