Marine Forecast
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 15 knots increasing to south 20 early this evening
and to southwest 35 Friday morning. Wind increasing to southwest 40 near noon
Friday then veering to west 35 Friday evening.
Rain beginning this evening changing to flurries Friday
morning. Visibility 1 mile or less in flurries.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 15 knots increasing to south 20 early this evening
and to southwest 35 Friday morning. Wind increasing to southwest 40 near noon
Friday then veering to west 35 Friday evening.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Waves 0.5 to 1 metre building to 1.5 this evening and to 2 to 3
overnight. Waves building to 3 to 4 Friday afternoon.
Weather & Visibility
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Rain beginning this evening changing to flurries Friday
morning. Visibility 1 mile or less 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 18 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 18 December 2025 Today Tonight and Friday At 3:00 a.m. EST today departing ridge located on a line north-south
over New England.
At 3:00 a.m. EST today low 985 mb located over northwestern
Minnesota.
By 3:00 a.m. EST Friday low 983 mb located over northeastern
Ontario.