Eastern Lake Ontario
Forecast
Marine Forecast
Issued 10:30 AM EDT 19 June 2025
Today Tonight and Friday.
Strong wind warning in effect.
Wind south 15 knots increasing to southwest 25 this afternoon then veering to west 20 this evening. Wind diminishing to west 15 early Friday morning then backing to southwest 15 near noon Friday. Wind diminishing to southwest 10 Friday evening.
Scattered showers ending overnight. Risk of thunderstorms late this afternoon and this evening. Scattered showers Friday late in the day with a risk of thunderstorms.
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Extended Forecast
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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 10:30 AM EDT 19 June 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 10:30 AM EDT 19 June 2025 Today Tonight and Friday At 10:30 a.m. EDT today low 999 mb located over southern GeorgianBay.
By 10:30 a.m. EDT Friday low 996 mb located over northern New
Brunswick.
At 10:30 a.m. EDT today ridge located on a line east-west over
northern Ontario.
By 10:30 a.m. EDT Friday ridge located on a line northeast-southwest
over northeastern Ontario.
Great Lakes - Lake Erie and Lake Ontario Area
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