145
FZUS63 KDTX 121939
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
339 PM EDT Tue May 12 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...Low pressure of 29.70 inches will track west to east
across the northern Great Lakes through Wednesday. This system
will bring increasing south winds this afternoon and evening,
followed by gusty west and northwest winds for Wednesday. Showers
and a few thunderstorms accompany the arrival of this system this
evening and into the overnight hours.

LCZ460-130345-
Lake St Clair-
339 PM EDT Tue May 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EDT THIS EVENING
THROUGH WEDNESDAY EVENING...

.TONIGHT...Southeast winds 15 to 20 knots becoming southwest 20 to
25 knots after midnight. Light showers by midnight. A chance of
light showers early in the morning. Waves 1 to 3 feet.
.WEDNESDAY...West winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3
feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 20 knots. Cloudy. Waves 1
to 3 feet.
.THURSDAY...North winds 15 to 20 knots. Mostly cloudy early in the
morning becoming mostly sunny. Waves 1 to 3 feet.
.THURSDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10
knots by midnight...then becoming light and variable after midnight.
Mostly clear. Waves 2 feet or less.
.FRIDAY...Southwest winds 5 to 10 knots becoming south 10 to 15
knots in the afternoon and evening. Partly cloudy. Waves 2 feet or
less.
.SATURDAY...West winds 15 to 20 knots. Mostly clear. Waves 2 feet or
less.
.SUNDAY...Southeast winds 10 to 15 knots. Partly cloudy. A chance of
showers and thunderstorms. 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