Great Lakes Forecast
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FZUS63 KDTX 150243
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
943 PM EST Tue Nov 14 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...High pressure averaging 30.30 inches will continue to
push east out of the Great Lakes tonight, causing pressure to
gradually diminish overnight. Pressure will drop down to 29.80
inches across the Great Lakes by Wednesday afternoon, as a low
pressure system moves from the U.P into southern Ontario. As a
result, occasional showers and gusts up to 25 knots are expected
tomorrow as the low traverses into Canada. Surface high pressure,
30.30 inches, will then build back in across Michigan by Thursday
afternoon, bringing dry conditions.

LCZ460-150915-
Lake St Clair-
943 PM EST Tue Nov 14 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...South winds 10 to 15 knots. Partly cloudy in the
late evening and early morning becoming mostly cloudy. Waves 2 feet
or less.
.WEDNESDAY...South winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. A chance of light showers in the
morning...then showers in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...West winds 15 to 20 knots. Gusts to 30 knots.
Mostly cloudy. Light showers early in the evening...then a chance
of light showers in the late evening and early morning. Waves 1 to
3 feet.
.THURSDAY...Northwest winds 15 to 20 knots. Partly sunny. Waves 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 15 knots becoming north 5 to
10 knots in the late evening and early morning...then veering to the
northeast early in the morning. Partly cloudy. Waves 2 feet or less.
.FRIDAY...South winds 10 to 15 knots. A chance of light showers in
the afternoon. Light showers in the evening. Waves 2 feet or less.
.SATURDAY...West winds 20 to 25 knots with gusts to 30 knots.
Showers. Waves 1 to 3 feet. A Small Craft Advisory may be needed.
.SUNDAY...Northwest winds 20 to 25 knots with gusts to 30 knots.
Mostly cloudy with a chance of rain and snow showers. Waves 1 to 3
feet.

$$

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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