Western Lake Ontario
Forecast
Marine Forecast
Issued 03:00 AM EDT 20 June 2025
Today Tonight and Saturday.
Wind west 15 knots diminishing to southwest 10 this morning then becoming light this evening. Wind becoming southeast 10 Saturday morning then increasing to southwest 15 Saturday afternoon.
Scattered showers this afternoon tonight and Saturday with a risk of thunderstorms.
Waves
Issued 03:00 AM EDT 20 June 2025
Today Tonight and Saturday.
Waves 0.5 to 1 metre subsiding to 0.5 or less near noon then
building to 0.5 to 1 Saturday evening.
Extended Forecast
Issued 03:00 AM EDT 20 June 2025
Sunday
Wind southwest 15 knots.
Monday
Wind southwest 15 knots.
Tuesday
Wind southwest 15 knots.
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Weather Conditions
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Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM EDT 20 June 2025 Today Tonight and Saturday At 3:00 a.m. EDT today departing low 997 mb located near Montréal.At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over northeastern Ontario.
By 3:00 a.m. EDT Saturday weakening ridge located on a line
north-south over western Quebec.
By 3:00 a.m. EDT Saturday approaching low 995 mb located over
western Minnesota.
Great Lakes - Lake Erie and Lake Ontario Area
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