339
FZUS63 KDTX 180135
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
935 PM EDT Sun May 17 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 warm front lifts across Lake Huron this morning,
with southerly flow expanding across all of the local waters.
Strong to severe thunderstorms are possible this afternoon-
evening and again Tuesday as a cold front sweeps across the
region. High pressure, 30.50 inches, then builds in mid-week.

LCZ460-180945-
Lake St Clair-
935 PM EDT Sun May 17 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...

.REST OF TONIGHT...South winds 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.MONDAY...South winds 10 to 15 knots increasing to 20 to 25 knots.
Mostly sunny. A chance of showers and thunderstorms late in the
afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon.
.MONDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy becoming mostly cloudy by
midnight becoming partly cloudy. A chance of showers and
thunderstorms . Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots becoming southwest 20 to 25
knots with gusts to 30 knots in the late morning and afternoon.
Light showers and a chance of thunderstorms early in the afternoon.
Waves 1 to 3 feet building to 2 to 4 feet in the late morning and
afternoon.
.TUESDAY NIGHT...West winds 15 to 20 knots veering to the northwest
after midnight. Light showers in the evening. A chance of
thunderstorms. Light showers likely after midnight. Waves 2 to 4
feet subsiding to 1 to 3 feet in the late evening and overnight.
.WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15
knots in the afternoon and evening. Partly sunny in the morning
becoming mostly clear. Waves 2 feet or less.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly clear. Waves 2
feet or less.
.FRIDAY...East winds 10 to 15 knots. Partly cloudy. Waves 2 feet or
less.

$$

KDK

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

Graphical marine forecasts are available at weather.gov/greatlakes