Marine Forecast
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Gale warning in effect.
Wind southwest 25 knots veering to west 30 this morning then
increasing to northwest 40 near noon. Wind diminishing to northwest 20 this
evening then backing to west 15 near midnight. Wind increasing to south 30
Saturday morning then veering to southwest 25 Saturday afternoon.
Rain changing to flurries early this morning and ending
overnight. Snow Saturday. Visibility 1 mile or less in snow.
Freezing spray warning in effect.
Freezing spray beginning near noon and ending near
midnight.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Gale warning in effect.
Wind southwest 25 knots veering to west 30 this morning then
increasing to northwest 40 near noon. Wind diminishing to northwest 20 this
evening then backing to west 15 near midnight. Wind increasing to south 30
Saturday morning then veering to southwest 25 Saturday afternoon.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Waves 2 metres building to 3 to 4 near noon then subsiding to 1.5
near midnight. Waves subsiding to 0.5 to 1 overnight then building to 2 to 3
Saturday morning.
Weather & Visibility
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Rain changing to flurries early this morning and ending
overnight. Snow Saturday. Visibility 1 mile or less in snow.
Freezing Spray
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Freezing spray warning in effect.
Freezing spray beginning near noon and ending near
midnight.
Ice Forecasts
Lake Huron
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.Ice Forecasts
Lake Michigan
Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings (In effect)
Northern Lake Huron
Issued 03:00 AM EST 19 December 2025'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.
Northern Lake Huron
Issued 03:00 AM EST 19 December 2025Moderate or severe freezing spray is 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 19 December 2025 Today Tonight and Saturday At 3:00 a.m. EST today low 983 mb located over northeastern Ontario.
By 3:00 a.m. EST Saturday departing low 960 mb located over
western Labrador.
At 3:00 a.m. EST today ridge located on a line north-south over
the Ontario - Manitoba border.
By 3:00 a.m. EST Saturday ridge located on a line north-south over
eastern Lake Erie.