000
FZUS63 KDTX 180150 RRA
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
943 PM EDT FRI AUG 17 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...A broad region of low pressure over southern Lake
Huron and southern Lower Michigan averages 29.80 inches. It will
move slowly into Ontario and the Ohio Valley tonight. Weak high
pressure fills in over the central Great Lakes Saturday and
builds to 30.00 inches through Sunday while maintaining favorable
marine conditions through the weekend. The next low pressure
system arrives near the south end of Lake Michigan late Monday.

LCZ460-180800-
Lake St Clair-
943 PM EDT FRI AUG 17 2018

.REST OF TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots early in the morning. Partly cloudy. A chance of light
showers in the late evening and early morning. Waves 1 to 3 feet.
.SATURDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots
late in the morning...then increasing to 10 to 15 knots in the
afternoon. Partly sunny. Waves 2 feet or less.
.SATURDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10
knots after midnight. Mostly clear. Waves 2 feet or less.
.SUNDAY...North winds 5 to 10 knots early in the morning becoming
light and variable. Mostly sunny. Waves 2 feet or less.
.SUNDAY NIGHT...Light and variable winds. Mostly clear. Waves nearly
calm.
.MONDAY...Light and variable winds becoming southeast 5 to 10 knots
in the afternoon and evening. Mostly sunny becoming partly cloudy
early in the evening becoming mostly cloudy. Waves 2 feet or less.
.TUESDAY...West winds 10 to 15 knots. Mostly cloudy with showers
likely. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Mostly clear. A chance of
showers. Waves 2 feet or less.

$$

CB

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

Graphical marine forecasts are available at weather.gov/greatlakes