Marine Forecast
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 25 knots increasing to south 35 early this morning
then veering to southwest 35 overnight. Wind veering to west 40 Friday morning
then to northwest 35 Friday afternoon. Wind diminishing to northwest 25 Friday
evening.
Showers beginning this morning changing to rain this
evening then to flurries Friday morning. Visibility 1 mile or less in
flurries.
Freezing spray warning in effect.
Freezing spray beginning near noon Friday.
Strong wind warning program has ended for the season.
Winds
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Gale warning in effect.
Wind south 25 knots increasing to south 35 early this morning
then veering to southwest 35 overnight. Wind veering to west 40 Friday morning
then to northwest 35 Friday afternoon. Wind diminishing to northwest 25 Friday
evening.
Strong wind warning program has ended for the season.
Waves
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Waves 2 metres building to 3 this morning and to 3 to 5 this
evening.
Weather & Visibility
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Showers beginning this morning changing to rain this
evening then to flurries Friday morning. Visibility 1 mile or less in
flurries.
Freezing Spray
Issued 03:00 AM EST 18 December 2025
Today Tonight and Friday.
Freezing spray warning in effect.
Freezing spray beginning near noon Friday.
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 18 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 18 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 18 December 2025 Today Tonight and Friday At 3:00 a.m. EST today departing ridge located on a line north-south
over New England.
At 3:00 a.m. EST today low 985 mb located over northwestern
Minnesota.
By 3:00 a.m. EST Friday low 983 mb located over northeastern
Ontario.