Lake St. Clair
Forecast
Marine Forecast
Issued 06:30 PM EDT 19 June 2025
Tonight and Friday.
Wind southwest 10 knots veering to west 10 Friday morning then becoming light Friday afternoon.
Scattered showers this evening with a risk of thunderstorms. Scattered showers Friday with a risk of thunderstorms.
Waves
Issued 06:30 PM EDT 19 June 2025
Tonight and Friday.
Waves 0.5 metres or less.
Extended Forecast
Issued 06:30 PM EDT 19 June 2025
Saturday
Wind light becoming south 15 knots in the
morning.
Sunday
Wind light.
Monday
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
Watches (In effect)
Squall watch in effect
Lake St. Clair
Issued 7:01 PM EDT 19 June 2025 Thunderstorms this evening may produce 35 knot wind gusts.Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.
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 6:30 PM EDT 19 June 2025 Tonight and Friday At 6:30 p.m. EDT tonight low 998 mb located west of Ottawa.By 6:30 p.m. EDT Friday low 993 mb located over the Gulf of
St. Lawrence.
At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over James Bay.
By 6:30 p.m. EDT Friday weakening ridge located on a line
north-south over James Bay.
By 6:30 p.m. EDT Friday approaching trough located on a line
northeast-southwest over Manitoba.
Great Lakes - Lake Erie and Lake Ontario Area
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