548
FZUS63 KDTX 180758
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
358 AM EDT Mon Aug 18 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, 30.30 inches, over Ontario slowly
advances east through today. In response, Great Lakes winds ease
just slightly as they veer around to the east-southeast. The next
low pressure system arrives Tuesday, triggering showers and
thunderstorms across the region.

LCZ460-181600-
Lake St Clair-
358 AM EDT Mon Aug 18 2025

.TODAY...East winds 10 to 15 knots diminishing to 5 to 10 knots late
in the afternoon. Mostly sunny. Waves 2 feet or less.
.TONIGHT...East winds 5 to 10 knots. Mostly clear. Waves 2 feet or
less.
.TUESDAY...Southeast winds 5 to 10 knots. Partly sunny. A chance of
showers. A chance of thunderstorms early in the afternoon. Waves 2
feet or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots backing to the north
after midnight. Partly cloudy. A chance of thunderstorms early in
the evening. A chance of showers until early morning. Waves 2 feet
or less.
.WEDNESDAY...North winds 10 to 15 knots increasing to 15 to 20 knots
in the evening. Partly cloudy then clearing. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Mostly clear. Waves 2
feet or less.
.FRIDAY...South winds 5 to 10 knots. Clear. Waves 2 feet or less.

$$

BT

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

Graphical marine forecasts are available at weather.gov/greatlakes