Marine Forecast
Issued 10:30 AM EDT 16 August 2025
Today Tonight and Sunday.
Strong wind warning in effect.
Wind light becoming south 10 knots early this evening then
veering to southwest 10 near midnight. Wind increasing to northwest 15 early
Sunday morning and to northeast 20 Sunday afternoon.
Scattered showers Sunday with a risk of
thunderstorms.
Winds
Issued 10:30 AM EDT 16 August 2025
Today Tonight and Sunday.
Strong wind warning in effect.
Wind light becoming south 10 knots early this evening then
veering to southwest 10 near midnight. Wind increasing to northwest 15 early
Sunday morning and to northeast 20 Sunday afternoon.
Waves
Issued 10:30 AM EDT 16 August 2025
Today Tonight and Sunday.
Waves 0.5 metres or less building to 0.5 to 1 Sunday morning and
to 1 to 1.5 Sunday evening.
Weather & Visibility
Issued 10:30 AM EDT 16 August 2025
Today Tonight and Sunday.
Scattered showers Sunday with a risk of
thunderstorms.
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Eastern Lake Ontario
Issued 10:30 AM EDT 16 August 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.
Technical Marine Synopsis
Issued 10:30 AM EDT 16 August 2025 Today Tonight and Sunday At 10:30 a.m. EDT today departing ridge located on a line
northeast-southwest over Maine.
At 10:30 a.m. EDT today cold front located on a line
northeast-southwest over North Channel.
By 10:30 a.m. EDT Sunday cold front located on a line
northeast-southwest over southern Ontario.
At 10:30 a.m. EDT today ridge located on a line northwest-southeast
over northwestern Ontario.
By 10:30 a.m. EDT Sunday ridge located on a line northwest-southeast
over northern Ontario.