Great Lakes Forecast
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FZUS63 KDTX 120816
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
316 AM EST Tue Dec 12 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...A low pressure clipper system will deepen as it races to
the New England states by this afternoon. A weak surface ridge will
bring a brief increase in pressure up to 29.90 inches this afternoon
before a second clipper system, averaging 29.60 inches, drops south
of Michigan Wednesday into Thursday.

LCZ460-122115-
Lake St Clair-
316 AM EST Tue Dec 12 2017

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest winds to 30 knots with gusts to 35 knot gales.
Partly sunny with scattered light snow showers. Waves 2 to 4 feet.
.TONIGHT...Northwest winds to 30 knots with gusts to 35 knot gales
diminishing to 20 to 25 knots with gusts to 30 knots after midnight.
Partly cloudy. Scattered flurries. Waves 2 to 4 feet subsiding to 1
to 3 feet early in the morning.
.WEDNESDAY...Northwest winds 15 to 20 knots becoming west 10 to 15
knots late in the morning...then diminishing to 5 to 10 knots early
in the afternoon backing to the east late in the afternoon. Mostly
sunny with scattered flurries early in the morning...then partly
sunny late in the morning. Mostly cloudy with light snow likely in
the afternoon. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots becoming north 10
to 15 knots in the late evening and overnight. Mostly cloudy. Light
snow likely until early morning. Waves 2 feet or less.
.THURSDAY...Northwest winds 10 to 15 knots becoming west 5 to 10
knots in the afternoon and evening. Partly sunny becoming mostly
sunny late in the morning becoming partly sunny becoming mostly
cloudy late in the evening. Waves 2 feet or less.
.FRIDAY...West winds 10 to 15 knots. Mostly cloudy with a chance of
snow showers. Waves 2 feet or less.
.SATURDAY...Southwest winds 10 to 15 knots. Partly cloudy. A chance
of snow showers. Waves 2 feet or less.

$$

SF

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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