Great Lakes Forecast
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FZUS63 KDTX 172039
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
339 PM EST Thu Jan 17 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...High pressure lingering over the eastern Great Lakes
at 30.20 inches into tonight. A cold front then moves through the
region early Friday morning. Strong high pressure, 30.60 inches,
will fill in Friday over Ontario while the next low, 29.50
inches, tracks through the southern Ohio Valley leaving the bulk
of the Great Lakes in between with northeast flow. Another much
stronger arctic cold front will then surge into the area late
this weekend, bringing gusty north wind, building waves and
freezing spray.

LCZ460-180915-
Lake St Clair-
339 PM EST Thu Jan 17 2019

.TONIGHT...Southeast winds 10 to 15 knots becoming south 5 to 10
knots late in the evening...then veering to the west after midnight
becoming northwest 10 to 15 knots early in the morning. Mostly
cloudy. Light snow likely early in the evening...then a chance of
light snow in the late evening and early morning. Waves 2 feet or
less.
.FRIDAY...Northwest winds 5 to 10 knots. Partly sunny. Waves 2 feet
or less.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots increasing to 10 to 15
knots after midnight...then diminishing to 5 to 10 knots early in
the morning. Light snow after midnight. Waves 2 feet or less.
.SATURDAY...East winds 10 to 15 knots becoming northeast 20 to 25
knots. Snow in the morning...then light snow likely in the
afternoon. Waves 2 feet or less.
.SATURDAY NIGHT...North winds 20 to 25 knots. Gusts to 30 knots
early in the morning. Cloudy until early morning becoming partly
cloudy. Light snow likely early in the evening...then a chance of
light snow in the late evening and early morning. Waves 1 to 3 feet.
A Small Craft Advisory may be needed.
.SUNDAY...North winds 20 to 25 knots diminishing to 15 to 20 knots
in the afternoon and evening. Mostly cloudy early in the morning
becoming partly cloudy. Waves 1 to 3 feet.
.MONDAY...Southeast winds 10 to 15 knots. Partly cloudy. Waves 2
feet or less.
.TUESDAY...Southwest winds 10 to 15 knots. Mostly cloudy with snow
likely. Waves 2 feet or less.

$$

JVC

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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