FZUS63 KDTX 192200
GLFSC 

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
600 PM EDT Tue May 19 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 sweeps across the region this evening,
veering winds from southwest to northwest. Strong to severe
thunderstorms will be possible ahead of this cold front. High
pressure, 30.50 inches, then builds in mid-week.

LCZ460-200600-
Lake St Clair-
600 PM EDT Tue May 19 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 late in the evening...then veering to the northwest after
midnight becoming north 15 to 20 knots early in the morning. Partly
cloudy this evening becoming mostly cloudy. A chance of
thunderstorms in the evening. A chance of light showers . Waves 1 to
3 feet.
.WEDNESDAY...North winds 15 to 20 knots diminishing to 10 to 15
knots late in the morning...then diminishing to 5 to 10 knots early
in the afternoon becoming northeast 10 to 15 knots late in the
afternoon. Mostly cloudy. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots diminishing to 10
to 15 knots after midnight. Mostly cloudy early in the evening
becoming partly cloudy. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 2
feet or less.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Partly cloudy. Waves 1 to 3 feet.
.FRIDAY...East winds 15 to 20 knots increasing to 20 to 25 knots
with gusts to 30 knots in the evening. Mostly cloudy. A chance of
showers in the afternoon. Rain showers likely in the evening. Waves
2 to 4 feet. A Small Craft Advisory may be needed.
.SATURDAY...East winds 20 to 25 knots with gusts to 30 knots.
Showers. Waves 2 to 4 feet.
.SUNDAY...West winds 5 to 10 knots. Mostly cloudy with a chance of
showers. Waves 2 feet or less.

$$

CB

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

Graphical marine forecasts are available at weather.gov/greatlakes