FZUS63 KDTX 161945 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 345 PM EDT Fri Oct 16 2026 Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. .SYNOPSIS...Deepening low pressure tracks into southern Quebec this afternoon. A strong cold front in its wake brings northerly gales this afternoon and evening. A ridge of high pressure then builds across the Ohio Valley on Saturday and Sunday with gusty westerly winds across the central lakes. LCZ460-170400- Lake St Clair- 345 PM EDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT FROM 7 PM EDT THIS EVENING THROUGH LATE TONIGHT... .TONIGHT...North winds to 30 knots increasing to 35 knot gales late in the evening...then diminishing to 30 knots after midnight. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .SATURDAY...North winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots late in the morning...then diminishing to 10 to 15 knots early in the afternoon becoming west 5 to 10 knots late in the afternoon. Sunny. Waves 2 to 4 feet subsiding to 2 feet or less in the late morning and afternoon. .SATURDAY NIGHT...West winds 5 to 10 knots becoming southwest 10 to 15 knots in the late evening and overnight. Clear. Waves 2 feet or less. .SUNDAY...Southwest winds 10 to 15 knots. Sunny. Waves 2 feet or less. .SUNDAY NIGHT...South winds 10 to 15 knots becoming southwest 5 to 10 knots in the late evening and overnight. Clear. Waves 2 feet or less. .MONDAY...Southwest winds 5 to 10 knots in the morning becoming light and variable. Clear. Waves 2 feet or less. .TUESDAY...Northeast winds 5 to 10 knots. Clear. Waves 2 feet or less. .WEDNESDAY...East winds 5 to 10 knots. Clear. Waves 2 feet or less. $$ TF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes