780
FZUS63 KDTX 200758
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
358 AM EDT Wed Aug 20 2025

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...Northeast winds prevail through Thursday as high
pressure, 30.20 inches, builds into the northern Great Lakes. The
high weakens as it drops into the lower Great Lakes Friday. A
cold front brings showers and a few thunderstorms to the region
this weekend.

LCZ460-201600-
Lake St Clair-
358 AM EDT Wed Aug 20 2025

.TODAY...North winds 15 to 20 knots diminishing to 10 to 15 knots
early in the afternoon...then increasing to 15 to 20 knots late in
the afternoon. Mostly cloudy. Waves 1 to 3 feet.
.TONIGHT...Northeast winds 15 to 20 knots diminishing to 10 to 15
knots early in the morning. Mostly clear. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 2
feet or less.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots diminishing to 5 to
10 knots after midnight. Clear. Waves 2 feet or less.
.FRIDAY...Northeast winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots in the
evening. Clear. Waves 2 feet or less.
.SATURDAY...West winds 10 to 15 knots. Mostly clear. Waves 2 feet or
less.
.SUNDAY...West winds 15 to 20 knots. Clear. Waves 2 feet or less.

$$

MV

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

Graphical marine forecasts are available at weather.gov/greatlakes