Great Lakes Forecast
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FZUS63 KDTX 182042
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
342 PM EST Sun Feb 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...Low pressure averaging 29.80 inches will push northeast
from northern Wisconsin into Lake Superior throughout Monday
morning, which will help push a warm front across the Great Lakes
through the day. A second low pressure system averaging 29.70 inches
will then push from eastern Iowa into central Michigan Monday into
Tuesday, bringing more warm air and steady rainfall to the Great
Lakes. Pressure will increase slightly up to 29.90 inches by
Wednesday morning as steady rain continues. Likely chance for
rain and slight chance for thunderstorms are forecasted for both
Monday and Tuesday.

LCZ460-190915-
Lake St Clair-
342 PM EST Sun Feb 18 2018

.TONIGHT...Southeast winds 5 to 10 knots increasing to 10 to 15
knots in the late evening and early morning...then becoming south 5
to 10 knots early in the morning. Partly cloudy.
.MONDAY...South winds 5 to 10 knots until late afternoon becoming
light and variable. Showers.
.MONDAY NIGHT...South winds 10 to 15 knots becoming southwest 15 to
20 knots early in the morning. Light showers. Areas of fog.
.TUESDAY...Southwest winds 15 to 20 knots diminishing to 10 to 15
knots early in the afternoon...then increasing to 15 to 20 knots
late in the afternoon. Areas of fog early in the morning. Showers
and a chance of thunderstorms.
.TUESDAY NIGHT...South winds 10 to 15 knots becoming southwest 15 to
20 knots late in the evening...then diminishing to 10 to 15 knots
after midnight. Light showers and a chance of thunderstorms.
.WEDNESDAY...Northwest winds 5 to 10 knots becoming north 10 to 15
knots in the afternoon...then becoming northeast 5 to 10 knots in
the evening. A chance of thunderstorms early in the morning. Rain
showers until late afternoon...then a chance of light rain and snow
showers early in the evening.
.THURSDAY...Northeast winds 10 to 15 knots. Partly cloudy.
.FRIDAY...East winds 5 to 10 knots. Partly cloudy. A chance of
showers.

Waves omitted due to ice coverage.

$$

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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