FZUS63 KDTX 182223 AAA
GLFSC 

Lake St Clair Forecast...UPDATED
National Weather Service Detroit/Pontiac MI
623 PM EDT Mon May 18 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...Strong to severe thunderstorms are likely this
afternoon-evening and again possible Tuesday as a cold front
sweeps across the region. High pressure, 30.50 inches, then
builds in mid-week.

LCZ460-190630-
Lake St Clair-
623 PM EDT Mon May 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15
knots after midnight. Light showers and a chance of thunderstorms
early in the evening...then mostly cloudy in the late evening and
overnight. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 20 knots increasing to 20 to 25
knots with gusts to 30 knots in the afternoon. Mostly cloudy early
in the morning becoming partly sunny. A chance of light showers
early in the morning. Light showers likely and a chance of
thunderstorms late in the afternoon. Waves 1 to 3 feet building to 2
to 4 feet in the afternoon.
.TUESDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to
15 knots by midnight...then becoming north 15 to 20 knots after
midnight. Mostly cloudy. Showers likely early in the evening. A
chance of thunderstorms. A chance of light showers in the late
evening and overnight. Waves 1 to 3 feet.
.WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15
knots in the late morning and afternoon. Partly sunny. A chance of
light showers early in the morning. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots diminishing to 10
to 15 knots after midnight. Partly cloudy. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots diminishing to 5 to 10
knots in the afternoon...then increasing to 10 to 15 knots in the
evening. Mostly sunny becoming partly cloudy. Waves 2 feet or less.
.FRIDAY...East winds 20 to 25 knots. Mostly cloudy. Showers likely.
Waves 1 to 3 feet.
.SATURDAY...East winds 20 to 25 knots. Mostly cloudy with showers
likely. 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