Eastern Lake Ontario
Forecast
Marine Forecast
Issued 03:00 AM EDT 17 July 2025
Today Tonight and Friday.
Strong wind warning in effect.
Wind south 15 knots increasing to southwest 20 this morning then veering to west 25 near noon. Wind veering to northwest 20 this evening then diminishing to north 15 overnight. Wind diminishing to light Friday morning.
Scattered showers ending this evening with a risk of thunderstorms.
Waves
Issued 03:00 AM EDT 17 July 2025
Today Tonight and Friday.
Waves 0.5 to 1 metre building to 2 near noon then subsiding to 1
near midnight. Waves subsiding to less than 0.5 near noon Friday.
Extended Forecast
Issued 03:00 AM EDT 17 July 2025
Saturday
Wind light.
Sunday
Wind light becoming northwest 15 knots late in
the day.
Monday
Wind north 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 16 May 2025 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Eastern Lake Ontario
Issued 03:00 AM EDT 17 July 2025'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 3:00 AM EDT 17 July 2025 Today Tonight and Friday At 3:00 a.m. EDT today low 1005 mb located over northeasternLower Michigan.
By 3:00 a.m. EDT Friday low 999 mb located over eastern Quebec.
At 3:00 a.m. EDT today high 1022 mb located over North Dakota.
By 3:00 a.m. EDT Friday high 1022 mb located over central Lake
Michigan.
Great Lakes - Lake Huron Area
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