Marine Forecast
Issued 06:30 PM EST 19 December 2025
Tonight and Saturday.
Gale warning in effect.
Wind west 45 knots diminishing to west 35 near midnight and to
west 25 late overnight. Wind diminishing to southwest 15 early Saturday morning
then backing to south 20 Saturday afternoon. Wind veering to southwest 25
Saturday evening.
Flurries ending Saturday morning. Scattered showers
Saturday evening. Visibility as low as 1 mile in flurries.
Strong wind warning program has ended for the season.
Winds
Issued 06:30 PM EST 19 December 2025
Tonight and Saturday.
Gale warning in effect.
Wind west 45 knots diminishing to west 35 near midnight and to
west 25 late overnight. Wind diminishing to southwest 15 early Saturday morning
then backing to south 20 Saturday afternoon. Wind veering to southwest 25
Saturday evening.
Strong wind warning program has ended for the season.
Waves
Issued 06:30 PM EST 19 December 2025
Tonight and Saturday.
Waves 4 to 6 metres subsiding to 2 to 3 late overnight and to 0.5
to 1 Saturday morning.
Weather & Visibility
Issued 06:30 PM EST 19 December 2025
Tonight and Saturday.
Flurries ending Saturday morning. Scattered showers
Saturday evening. Visibility as low as 1 mile in flurries.
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Eastern Lake Ontario
Issued 6:30 PM EST 19 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 6:30 PM EST 19 December 2025 Tonight and Saturday At 6:30 p.m. EST tonight departing low 974 mb located over central
Quebec.
At 6:30 p.m. EST tonight ridge located on a line north-south over
western Lake Superior.
By 6:30 p.m. EST Saturday ridge located on a line
northeast-southwest over the Eastern Seaboard.
At 6:30 p.m. EST tonight low 985 mb located over southwestern
Manitoba.
By 6:30 p.m. EST Saturday low 992 mb located northeast of Lake
Superior.