Eastern Lake Ontario
Forecast
Marine Forecast
Issued 06:30 PM EDT 19 July 2025
Tonight and Sunday.
Wind light becoming southwest 15 knots near midnight then veering to northwest 15 early Sunday morning. Wind backing to west 15 near noon Sunday.
Scattered showers tonight and Sunday with a risk of thunderstorms.
Waves
Issued 06:30 PM EDT 19 July 2025
Tonight and Sunday.
Waves 0.5 metres or less.
Extended Forecast
Issued 06:30 PM EDT 19 July 2025
Monday
Wind north 15 knots diminishing to light in the
afternoon then becoming northeast 15 late in the day.
Tuesday
Wind northeast 15 knots diminishing to
light.
Wednesday
Wind 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 16 May 2025 Forecasts have ended for the season.Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 19 July 2025 Tonight and Sunday At 6:30 p.m. EDT tonight trough located on a linenortheast-southwest over Lower Michigan.
By 6:30 p.m. EDT Sunday departing trough located over the East
Coast of the U.S.
At 6:30 p.m. EDT tonight high 1017 mb located over Lake Winnipeg.
By 6:30 p.m. EDT Sunday building high 1019 mb located over Lake
Superior.
Great Lakes - Lake Huron Area
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