Marine Forecast
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Gale warning in effect.
Wind southwest 25 knots increasing to northwest 40 near noon
then diminishing to west 25 this evening. Wind diminishing to southwest 15 near
midnight then increasing to south 25 Saturday morning. Wind veering to southwest
25 Saturday afternoon.
Rain changing to flurries early this morning and ending
overnight. Periods of snow Saturday. Visibility 1 mile or less in
precipitation.
Risk of freezing spray today and this evening.
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 increasing to northwest 40 near noon
then diminishing to west 25 this evening. Wind diminishing to southwest 15 near
midnight then increasing to south 25 Saturday morning. Wind 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 this morning then subsiding to
2 near midnight. Waves subsiding to 0.5 to 1 overnight then building to 2
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. Periods of snow Saturday. Visibility 1 mile or less in
precipitation.
Freezing Spray
Issued 03:00 AM EST 19 December 2025
Today Tonight and Saturday.
Risk of freezing spray today and this evening.
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)
Southern 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.
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.