Great Lakes Forecast
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252
FZUS63 KDTX 200740
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
240 AM EST Mon Nov 20 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...High pressure system, 30.10 inches, will slide east
through the Ohio Valley today, with an extension of the ridge
northward across the Great Lakes region. The next low pressure
system, 29.20 inches, will move east along the southern tier of
Canada to just north of Lake Superior late tonight. Southwest winds
will increase between the departing high and the approaching low.
The attendant cold front will clear the central Great Lakes region
Tuesday, ushering in another round of brisk northwesterly flow. High
pressure will regain a foothold on Wednesday.

LCZ460-202115-
Lake St Clair-
240 AM EST Mon Nov 20 2017

.TODAY...Southwest winds 15 to 20 knots. Partly sunny until late
afternoon then clearing. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 20 to 25 knots. Clear. Waves 2 to 4 feet.
.TUESDAY...Southwest winds 20 to 25 knots diminishing to 15 to 20
knots late in the afternoon. Partly sunny until late afternoon
becoming cloudy. A chance of light showers late in the afternoon.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy with
a chance of light showers early in the evening...then partly cloudy
in the late evening and overnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 15 knots becoming light and
variable. Mostly clear. Waves 2 feet or less.
.THURSDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...Southwest winds 15 to 20 knots. Partly cloudy. A chance of
showers. Waves 2 feet or less.

$$

JVC

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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