898
FZUS63 KDTX 030144
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
944 PM EDT Tue Sep 2 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...High pressure, 30.20 inches, persists across the
eastern Great Lakes tonight while low pressure, 29.60 inches, is
forecast to develop over western Lake Superior Wednesday. This
system will move into northern Ontario while driving a strong
cold front across Lake Huron Wednesday night triggering showers
and a few thunderstorms. Much cooler air will advance across the
Great Lakes in the wake of this system and persist into the
weekend.

LCZ460-030945-
Lake St Clair-
944 PM EDT Tue Sep 2 2025

.REST OF TONIGHT...South winds 5 to 10 knots. Clear. Waves 2 feet or
less.
.WEDNESDAY...Southwest winds 5 to 10 knots becoming south 10 to 15
knots in the late morning and afternoon. Mostly sunny. A chance of.
Waves 2 feet or less.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots becoming west 15
to 20 knots in the late evening and overnight. Partly cloudy early
in the evening. Showers likely until early morning. A chance of
thunderstorms in the late evening and early morning.. then showers
after midnight. A chance of waterspouts in the late evening and
early morning. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15
knots in the late morning and early afternoon...then becoming west 5
to 10 knots early in the afternoon. Showers early in the
morning...then a chance of light showers in the late morning and
early afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 10 knots becoming southwest 10 to
15 knots after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...Southwest winds 15 to 20 knots with gusts to 30 knots
veering to the west in the evening. Partly cloudy then clearing.
Waves 1 to 3 feet. A Small Craft Advisory may be needed.
.SATURDAY...West winds 10 to 15 knots. Mostly clear. Waves 2 feet or
less.
.SUNDAY...Northwest winds 10 to 15 knots. Mostly clear. Waves 2 feet
or less.

$$

MR

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

Graphical marine forecasts are available at weather.gov/greatlakes