Great Lakes Forecast
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865
FZUS63 KDTX 180742
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
342 AM EDT Thu Oct 18 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...High pressure, 30.50 inches, extends into the southern
Great Lakes while building across the Ohio valley today. High
pressure holds there as the next low pressure system, 29.40
inches, moves into northern Ontario tonight. The low continues
across northern Ontario Friday and then deepens to 29.10 inches
over northern Quebec while pulling a strong cold front across the
central Great Lakes. A Gale Watch is in effect Friday and Friday
night for this system.

LCZ460-182015-
Lake St Clair-
342 AM EDT Thu Oct 18 2018

.TODAY...Northwest winds 10 to 15 knots becoming west 5 to 10 knots
in the late morning and early afternoon...then becoming southwest 10
to 15 knots late in the afternoon. Sunny. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to 20
knots in the late evening and overnight. Clear. Waves 1 to 3 feet.
.FRIDAY...Southwest winds 15 to 20 knots. Mostly sunny until late
afternoon becoming mostly cloudy. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots with gusts to 30
knots increasing to 20 to 25 knots with gusts to 30 knots late in
the evening...then diminishing to 15 to 20 knots with gusts to 30
knots after midnight. Mostly cloudy. A chance of light showers early
in the morning. Waves 1 to 3 feet. A Small Craft Advisory may be
needed.
.SATURDAY...Northwest winds 10 to 15 knots increasing to 15 to 20
knots in the afternoon and evening. Mostly cloudy becoming partly
sunny in the late morning and early afternoon becoming mostly cloudy
becoming partly cloudy late in the evening. A chance of light
showers. Waves 1 to 3 feet.
.SUNDAY...West winds 15 to 20 knots. Mostly clear. A chance of light
showers. Waves 2 feet or less.
.MONDAY...West winds 10 to 15 knots. Partly cloudy. 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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