Great Lakes Forecast
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FZUS63 KDTX 171356 RRA
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
955 AM EDT THU AUG 17 2017

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...Low pressure, 29.50 inches, will move from southern
Minnesota this morning to western Upper Michigan this evening. This
system will drive an associated warm front, 29.70 inches, into Lake
Huron by evening. The low will then move east of Lake Superior by
Friday morning, allowing high pressure to expand across the Ohio
Valley.

LCZ460-172000-
Lake St Clair-
955 AM EDT THU AUG 17 2017

.REST OF TODAY...South winds 10 to 15 knots. Cloudy. Scattered
showers and thunderstorms late in the morning...then numerous
showers and thunderstorms in the afternoon. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Mostly cloudy this
evening becoming partly cloudy. A chance of showers and
thunderstorms early in the evening...then showers and thunderstorms
likely in the late evening and early morning. Waves 2 feet or less.
.FRIDAY...West winds 10 to 15 knots. Partly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...West winds 10 to 15 knots diminishing to 5 to 10
knots early in the morning. Partly cloudy. Waves 2 feet or less.
.SATURDAY...West winds 5 to 10 knots becoming light and variable.
Partly cloudy with a chance of showers and thunderstorms...then
mostly clear late in the evening. Waves 2 feet or less.
.SUNDAY...South winds 5 to 10 knots. Clear. Waves 2 feet or less.
.MONDAY...South winds 5 to 10 knots. Mostly clear. Waves 2 feet or
less.

$$

MR

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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