Eastern Lake Ontario
Forecast
Marine Forecast
Issued 06:30 PM EDT 19 October 2026
Tonight and Tuesday.
Wind northwest 10 knots increasing to northeast 15 to 20 late overnight then becoming northeast 15 Tuesday afternoon.
Waves
Issued 06:30 PM EDT 19 October 2026
Tonight and Tuesday.
Waves 0.5 metres building to 0.5 to 1 early Tuesday
morning.
Extended Forecast
Issued 06:30 PM EDT 19 October 2026
Wednesday
Wind northeast 15 knots diminishing to light
in the morning.
Thursday
Wind light becoming northeast 15 knots late
in the day.
Friday
Wind northeast 15 knots diminishing to
light.
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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 17 May 2026 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 19 October 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight high 1029 mb located over Lake Superior.By 6:30 p.m. EDT Tuesday high 1033 mb located over southern Quebec.
Great Lakes - Lake Erie and Lake Ontario Area
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