Marine Forecast
Issued 03:00 AM EDT 25 August 2026
Today Tonight and Wednesday.
Strong wind warning in effect.
Wind north 15 knots diminishing to north 10 early this morning
then backing to west 10 near noon. Wind backing to south 10 early this evening
then increasing to south 15 overnight. Wind increasing to south 20 Wednesday
afternoon then diminishing to southwest 15 Wednesday evening.
Showers Wednesday with a risk of
thunderstorms.
Winds
Issued 03:00 AM EDT 25 August 2026
Today Tonight and Wednesday.
Strong wind warning in effect.
Wind north 15 knots diminishing to north 10 early this morning
then backing to west 10 near noon. Wind backing to south 10 early this evening
then increasing to south 15 overnight. Wind increasing to south 20 Wednesday
afternoon then diminishing to southwest 15 Wednesday evening.
Waves
Issued 03:00 AM EDT 25 August 2026
Today Tonight and Wednesday.
Waves 0.5 to 1 metre subsiding to 0.5 or less this morning then
building to 0.5 to 1 Wednesday morning. Waves building to 1 to 1.5 Wednesday
evening.
Weather & Visibility
Issued 03:00 AM EDT 25 August 2026
Today Tonight and Wednesday.
Showers Wednesday with a risk of
thunderstorms.
Ice Forecasts
Lake Huron
Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.Ice Forecasts
Lake Michigan
Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings (In effect)
Northern Lake Huron
Issued 03:00 AM EDT 25 August 2026'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.
Technical Marine Synopsis
Issued 3:00 AM EDT 25 August 2026 Today Tonight and Wednesday At 3:00 a.m. EDT today trough located on a line northeast-southwest
over eastern Ontario.
By 3:00 a.m. EDT Wednesday departing trough located on a line
north-south over the Eastern Seaboard.
At 3:00 a.m. EDT today ridge located on a line north-south over
Lake Superior.
By 3:00 a.m. EDT Wednesday ridge located on a line north-south
over Lake of the Woods.
At 3:00 a.m. EDT today trough located on a line north-south over
the Ontario - Manitoba border.
By 3:00 a.m. EDT Wednesday trough located on a line north-south
over western Lake Superior.