Marine Forecast
Issued 03:00 AM EST 15 November 2025
Today Tonight and Sunday.
Strong wind warning in effect.
Wind southeast 10 knots increasing to southwest 15 early this
morning and to southwest 20 near noon. Wind veering to northwest 20 early this
evening then increasing to northwest 25 overnight. Wind northwest 25
Sunday.
Winds
Issued 03:00 AM EST 15 November 2025
Today Tonight and Sunday.
Strong wind warning in effect.
Wind southeast 10 knots increasing to southwest 15 early this
morning and to southwest 20 near noon. Wind veering to northwest 20 early this
evening then increasing to northwest 25 overnight. Wind northwest 25
Sunday.
Waves
Issued 03:00 AM EST 15 November 2025
Today Tonight and Sunday.
Waves 0.5 metres or less building to 0.5 to 1 this
afternoon.
Ice Forecasts
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Lake St. Clair
Issued 03:00 AM EST 15 November 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 3:00 AM EST 15 November 2025 Today Tonight and Sunday At 3:00 a.m. EST today dissipating ridge located on a line
north-south over Ottawa.
At 3:00 a.m. EST today trough from low located on a line north-south
over Lake Nipigon.
By 3:00 a.m. EST Sunday low 983 mb located over the St. Lawrence
River.