030
FZUS63 KDTX 211930
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
330 PM EDT Fri Aug 21 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...A cold front will move across the Great Lakes tomorrow
morning which will veer wind direction to the northwest. Showers
and thunderstorms are expected just ahead of and along the front.
Post-frontal northwest flow leads to gusty winds through the day
on Sunday.

LCZ460-220330-
Lake St Clair-
330 PM EDT Fri Aug 21 2026

.TONIGHT...Southeast winds 10 to 15 knots becoming south 5 to 10
knots after midnight. Partly cloudy in the evening...then mostly
cloudy with scattered light showers and a chance of thunderstorms
after midnight. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots. Mostly cloudy. Scattered
light showers early in the morning. Numerous showers in the late
morning and afternoon. A chance of thunderstorms in the afternoon.
Waves 2 feet or less.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Partly cloudy until
early morning then clearing. Scattered light showers and a chance of
thunderstorms early in the evening. Waves 2 feet or less.
.SUNDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15
knots early in the afternoon. Partly sunny. Scattered light showers
early in the afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 15 knots. Mostly cloudy early
in the evening becoming partly cloudy. Scattered light showers early
in the evening. Waves 2 feet or less.
.MONDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the evening. Sunny in the morning becoming mostly clear.
Waves 2 feet or less.
.TUESDAY...South winds 5 to 10 knots. Mostly clear. Waves 2 feet or
less.
.WEDNESDAY...South winds 10 to 15 knots. Partly cloudy. A chance of
showers. Waves 2 feet or less.

$$

AM

Experimental modernized open lake forecast is available online at
weather.gov/dtx/glftablesc

Graphical marine forecasts are available at weather.gov/greatlakes