Marine Forecast
Issued 03:00 AM EDT 20 August 2026
Today Tonight and Friday.
Wind light becoming southeast 10 knots near midnight then
increasing to southeast 15 Friday morning.
Scattered showers overnight and Friday with a risk of
thunderstorms.
Winds
Issued 03:00 AM EDT 20 August 2026
Today Tonight and Friday.
Wind light becoming southeast 10 knots near midnight then
increasing to southeast 15 Friday morning.
Waves
Issued 03:00 AM EDT 20 August 2026
Today Tonight and Friday.
Waves 0.5 metres or less building to 0.5 to 1 near noon
Friday.
Weather & Visibility
Issued 03:00 AM EDT 20 August 2026
Today Tonight and Friday.
Scattered showers overnight and Friday with a risk of
thunderstorms.
Ice ForecastsIssued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
No watches or warnings in effect.
Technical Marine SynopsisIssued 3:00 AM EDT 20 August 2026 Today Tonight and Friday At 3:00 a.m. EDT today ridge located on a line northeast-southwest over Lake Huron. By 3:00 a.m. EDT Friday ridge located on a line northeast-southwest over southern Ontario.
At 3:00 a.m. EDT today low 1010 mb located over southern Manitoba. By 3:00 a.m. EDT Friday low 1010 mb located over northern Minnesota.
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