219
FZUS63 KDTX 222010
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
410 PM EDT Tue Sep 22 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...High pressure, 30.50 inches, builds further east into
Quebec today leading to continued modest east-northeast winds
over the central Great Lakes. A weak low pressure system should
emerge over the northern portion of the Ohio Valley by Wednesday
morning, and could lead to some light showers for western Lake
Erie.

LCZ460-230415-
Lake St Clair-
410 PM EDT Tue Sep 22 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING...

.TONIGHT...Northeast winds 20 to 25 knots increasing to 30 knots by
midnight...then diminishing to 20 to 25 knots early in the morning.
Mostly cloudy this evening becoming partly cloudy. Waves 3 to 5
feet. Waves occasionally around 7 feet.
.WEDNESDAY...East winds 20 to 25 knots diminishing to 15 to 20 knots
in the afternoon. Partly sunny. Waves 2 to 4 feet subsiding to 1 to
3 feet in the afternoon.
.WEDNESDAY NIGHT...East winds 20 to 25 knots diminishing to 15 to 20
knots after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1
to 3 feet after midnight.
.THURSDAY...East winds 10 to 15 knots. Sunny. Waves 2 feet or less.
.THURSDAY NIGHT...East winds 10 to 15 knots. Mostly clear. Waves 2
feet or less.
.FRIDAY...Northeast winds 5 to 10 knots. Mostly sunny in the morning
becoming clear. Waves 2 feet or less.
.SATURDAY...Northeast winds 5 to 10 knots. Clear. Waves 2 feet or
less.
.SUNDAY...Northeast winds 5 to 10 knots. Mostly clear. Waves 2 feet
or less.

$$

KGK

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

Graphical marine forecasts are available at weather.gov/greatlakes