411
FZUS63 KDTX 210136
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
936 PM EDT Mon Jul 20 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 cold front tracks across the Great Lakes late
tonight, with potential for strong to severe thunderstorms in its
wake. A second cold front then sweeps across the area Tuesday
evening, bringing a brief period of gusts to gale force. High
pressure fills in mid-week for a drier pattern to end the work
week.

LCZ460-210945-
Lake St Clair-
936 PM EDT Mon Jul 20 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM EDT TUESDAY THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...South winds 15 to 20 knots becoming southwest 20
to 25 knots early in the morning. Partly cloudy this evening
becoming mostly cloudy. Patchy smoke. A chance of light showers
early in the morning. Waves 1 to 3 feet building to 2 to 4 feet
early in the morning.
.TUESDAY...Southwest winds 20 to 25 knots becoming west 15 to 20
knots in the late morning and afternoon. Partly sunny. A chance of
light showers early in the morning...then a chance of showers and
thunderstorms in the late morning and afternoon. Patchy smoke late
in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
late morning and afternoon.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots increasing to 20 to
25 knots in the late evening and overnight. Partly cloudy. A chance
of showers and thunderstorms early in the evening. Patchy smoke
early in the evening. Waves 1 to 3 feet building to 2 to 4 feet in
the late evening and overnight.
.WEDNESDAY...Northwest winds 20 to 25 knots diminishing to 10 to 15
knots. Partly sunny. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. Clear. Waves 2 feet or less.
.THURSDAY...Northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots in the
evening. Clear. Waves 2 feet or less.
.FRIDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet
or less.
.SATURDAY...South winds 5 to 10 knots. Clear. Waves 2 feet or less.

$$

SC

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

Graphical marine forecasts are available at weather.gov/greatlakes