Great Lakes Forecast
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762
FZUS63 KDTX 181943
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
343 PM EDT Wed Apr 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 29.60 inches will push northeast
from southern Indiana into Pennsylvania Wednesday afternoon through
Thursday morning. Gusty northwesterly flow between 20 - 25 knots,
isolated 30 knots, is expected Thursday afternoon as a pressure
gradient tightens across the lakes. Pressure will then gradually be
on the rise as a broad surface high pressure system starts to move
east into the Midwest. Pressure is expected to average 30.20 inches
by Thursday afternoon and will increase to 30.40 inches by Friday
afternoon. High pressure will reside across the Great Lakes region
through the weekend.

LCZ460-190815-
Lake St Clair-
343 PM EDT Wed Apr 18 2018

.TONIGHT...Northeast winds 10 to 15 knots becoming north 15 to 20
knots in the late evening and overnight. Cloudy. A chance of light
snow in the evening. Light rain likely. Light snow likely after
midnight. Waves 2 feet or less.
.THURSDAY...Northwest winds 15 to 20 knots. Partly sunny. A chance
of light snow early in the morning...then a chance of light snow
showers late in the morning. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear.
Waves 2 feet or less.
.FRIDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the afternoon. Sunny. Waves 2 feet or less.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots in the evening
becoming light and variable. Clear. Waves 2 feet or less.
.SATURDAY...Light and variable winds. Mostly sunny becoming partly
sunny early in the afternoon becoming mostly clear. Waves nearly
calm.
.SUNDAY...East winds 5 to 10 knots. Clear. Waves 2 feet or less.
.MONDAY...Southeast winds 5 to 10 knots. Mostly clear. Waves 2 feet
or less.

$$

DRC

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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