Great Lakes Forecast
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FZUS63 KDTX 211932
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
332 PM EDT Tue May 21 2019

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 of 30.20 inches will continue to reside
over the area for the rest of today keeping conditions mainly dry
with northeasterly winds of 10 to 15 knots. A broad low pressure
system will track toward western Lake Superior on Wednesday with
a warm front lifting through, locally. At this farther extent of
the pressure field, barometric pressure will only fall to around
29.90 inches on Wednesday with some scattered showers and storms.
Pressure values will fall a bit further to 29.80 inches Wednesday
night. Gusts as high as 25 knots will also be possible on
Wednesday and Thursday accompanied by winds shifting to the
southeast then southwest by Thursday afternoon.

LCZ460-220815-
Lake St Clair-
332 PM EDT Tue May 21 2019

.TONIGHT...Northeast winds 5 to 10 knots becoming east 10 to 15
knots after midnight. Partly cloudy this evening becoming mostly
cloudy. Waves 2 feet or less.
.WEDNESDAY...Southeast winds 15 to 20 knots diminishing to 10 to 15
knots late in the afternoon. Mostly cloudy with a chance of showers
and thunderstorms. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots becoming south 5
to 10 knots in the late evening and overnight. Mostly clear. Waves 2
feet or less.
.THURSDAY...Southwest winds 10 to 15 knots. Partly sunny with a
chance of showers and thunderstorms. Waves 2 feet or less.
.THURSDAY NIGHT...West winds 10 to 15 knots becoming northwest 5 to
10 knots after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...North winds 5 to 10 knots veering to the southeast in the
afternoon and evening. Mostly sunny becoming partly sunny in the
afternoon becoming mostly cloudy. A chance of showers and
thunderstorms in the evening. Waves 2 feet or less.
.SATURDAY...West winds 10 to 15 knots. Partly cloudy. A chance of
showers and thunderstorms. Waves 2 feet or less.
.SUNDAY...South winds 5 to 10 knots. Partly cloudy. 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


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