Great Lakes Forecast
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FZUS63 KDTX 211311
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
911 AM EDT Tue Aug 21 2018

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...Seasonably strong low pressure, 29.60 inches, will
track across lower Michigan today. This system will deepen to
29.40 inches as it continues to lift northeast into southern
Ontario tonight. This low will exit into Quebec on Wednesday. In
its wake, pressure will build to 30.20 inches as higher pressure
settles over the east-central United States during the late week
period.

LCZ460-212015-
Lake St Clair-
911 AM EDT Tue Aug 21 2018

.REST OF TODAY...South winds 10 to 15 knots veering to the southwest
late in the afternoon. Showers and a chance of thunderstorms. Waves
2 feet or less.
.TONIGHT...Northwest winds 10 to 15 knots. Mostly cloudy this
evening becoming partly cloudy. A chance of thunderstorms early in
the evening. A chance of showers in the evening. Waves 2 feet or
less.
.WEDNESDAY...Northwest winds 10 to 15 knots increasing to 15 to 20
knots in the late morning and early afternoon...then becoming north
10 to 15 knots late in the afternoon. Partly sunny. Waves 1 to 2
feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots becoming northwest 5
to 10 knots in the late evening and overnight. Clear. Waves 2 feet
or less.
.THURSDAY...West winds 5 to 10 knots. Clear. Waves 2 feet or less.
.FRIDAY...South winds 5 to 10 knots. Mostly clear. Waves 2 feet or
less.
.SATURDAY...Southwest winds 10 to 15 knots. Mostly cloudy with a
chance of showers and thunderstorms. Waves 2 feet or less.

$$

SF

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

Graphical marine forecasts are available at weather.gov/greatlakes



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