Marine Forecast
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Gale warning in effect.
Wind south 25 knots increasing to southwest 35 early this
morning then veering to west 40 near noon. Wind diminishing to west 20 overnight
then backing to southwest 15 Saturday morning. Wind backing to south 15 near
noon Saturday then increasing to southwest 25 Saturday evening.
Rain changing to flurries this morning and ending
overnight. Visibility as low as 1 mile in flurries.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Gale warning in effect.
Wind south 25 knots increasing to southwest 35 early this
morning then veering to west 40 near noon. Wind diminishing to west 20 overnight
then backing to southwest 15 Saturday morning. Wind backing to south 15 near
noon Saturday then increasing to southwest 25 Saturday evening.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Waves 1.5 metres building to 2 to 3 this morning and to 3 to 4
this afternoon. Waves subsiding to 2 to 3 near midnight and to 0.5 to 1 Saturday
morning.
Weather & Visibility
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Rain changing to flurries this morning and ending
overnight. 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)
Western Lake Ontario
Issued 03:00 AM 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 3:00 AM EST 19 December 2025 Today Tonight and Saturday At 3:00 a.m. EST today low 983 mb located over northeastern Ontario.
By 3:00 a.m. EST Saturday departing low 960 mb located over
western Labrador.
At 3:00 a.m. EST today ridge located on a line north-south over
the Ontario - Manitoba border.
By 3:00 a.m. EST Saturday ridge located on a line north-south over
eastern Lake Erie.