Western Lake Ontario
Forecast
Marine Forecast
Issued 10:30 AM EDT 13 July 2025
Today Tonight and Monday.
Wind southwest 10 knots becoming light this afternoon then becoming west 10 early Monday morning. Wind backing to southwest 10 near noon Monday.
Scattered showers ending this evening with a risk of thunderstorms.
Waves
Issued 10:30 AM EDT 13 July 2025
Today Tonight and Monday.
Waves 0.5 to 1 metre subsiding to 0.5 or less early this
evening.
Extended Forecast
Issued 03:00 AM EDT 13 July 2025
Tuesday
Wind light.
Wednesday
Wind light.
Thursday
Wind light becoming 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
Warnings (In effect)
Squall warning in effect
Western Lake Ontario
Issued 10:16 AM EDT 13 July 2025 Squalls with wind gusts up to 35 knots, frequent lightning, hail of 1 to 2 centimetres and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area.Thunderstorms over western lake Ontario will track eastward this morning.
Proceed with caution as visibility may suddenly be reduced to near zero. Consider delaying or postponing travel in areas under the squall warning.
Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Synopsis
Technical Marine Synopsis
Issued 10:30 AM EDT 13 July 2025 Today Tonight and Monday At 10:30 a.m. EDT today trough from 992 mb low located from JamesBay to Lake Erie.
By 10:30 a.m. EDT Monday departing trough from 985 mb low located
from Hudson Bay to the St. Lawrence River.
At 10:30 a.m. EDT today quasi-stationary ridge located on a line
northeast-southwest over West Virginia.
Great Lakes - Lake Erie and Lake Ontario Area
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