Great Lakes Forecast
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FZUS63 KDTX 150257
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
957 PM EST Sat Dec 14 2019

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...Troughing over the lakes today with the center of a low
pressure system lifting across the northeastern US is leading to
northwest flow across the central Great Lake today into tonight.
Tightening pressure gradient into tonight along with the arrival
of colder air over the lakes will bring a set up capable of
marginal gale force winds across the northern half of Lake Huron.
A Gale Warning is in effect for these winds starting tonight and
lasting into tomorrow morning. Small Craft Advisory conditions
will also be met for northern portions of the Thumb as wave action
increases tonight and last into tomorrow afternoon. Winds begin
easing up tomorrow afternoon as the low lifts well to the
northeast. Winds remain light across the lakes on Monday into
Tuesday while a low pressure system moves across the Ohio River
Valley bringing snow showers to the southern lakes. More impactful
surge of arctic air with a low pressure system comes late Tuesday
into Wednesday.

LCZ460-150915-
Lake St Clair-
957 PM EST Sat Dec 14 2019

.REST OF TONIGHT...West winds 15 to 20 knots. Mostly cloudy with a
chance of light snow showers. Waves 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots diminishing to 5 to 10 knots
late in the afternoon. Partly sunny. Waves 2 feet or less.
.SUNDAY NIGHT...West winds 5 to 10 knots backing to the south after
midnight. Partly cloudy. Waves 2 feet or less.
.MONDAY...Northeast winds 5 to 10 knots. Mostly cloudy. Waves 2 feet
or less.
.MONDAY NIGHT...North winds 10 to 15 knots. Mostly cloudy with a
chance of light snow. Waves 2 feet or less.
.TUESDAY...Northwest winds 10 to 15 knots becoming west 15 to 20
knots in the evening. Partly sunny in the morning becoming mostly
clear. Waves 2 feet or less.
.WEDNESDAY...West winds 15 to 20 knots. Partly cloudy. Waves 2 feet
or less.
.THURSDAY...Southwest winds 10 to 15 knots. Partly cloudy. Waves 2
feet or less.

$$

AA

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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