Great Lakes Forecast
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FZUS63 KDTX 040850
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
350 AM EST Mon Dec 4 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...Low pressure developing over the Midwest today will
rapidly deepen to near 28.70 inches as it moves across Lake Superior
tonight and into northern Ontario Tuesday morning. The system will
generate high end south gales across Lake Huron today and tonight
shifting westerly behind a strong cold front Tuesday. Gales will
then last through Wednesday morning. Much colder westerly flow will
continue through the week while diminishing each day Thursday and
Friday.

LCZ460-042100-
Lake St Clair-
350 AM EST Mon Dec 4 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
LATE TUESDAY NIGHT...

.TODAY...South winds 15 to 20 knots. Mostly cloudy. A chance of
light showers late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...South winds 20 to 25 knots with gusts to 30 knots
increasing to 30 knots with gusts to 35 knot gales after midnight.
Light showers until early morning...then showers early in the
morning. Waves 2 to 4 feet.
.TUESDAY...Southwest winds 20 to 25 knots diminishing to 15 to 20
knots in the late morning and afternoon. Partly sunny. Light showers
early in the morning...then a chance of light showers in the late
morning and early afternoon. Waves 2 to 4 feet subsiding to 1 to 3
feet in the late morning and afternoon.
.TUESDAY NIGHT...Southwest winds 15 to 20 knots with gusts to 30
knots increasing to 20 to 25 knots with gusts to 30 knots early in
the morning. Partly cloudy. Waves 1 to 3 feet.
.WEDNESDAY...West winds 15 to 20 knots. Gusts to 30 knots in the
morning. Partly sunny in the morning becoming mostly cloudy. Waves 1
to 3 feet.
.THURSDAY...West winds 10 to 15 knots. Mostly cloudy with a chance
of light snow showers. Waves 2 feet or less.
.FRIDAY...Southwest winds 10 to 15 knots. Mostly cloudy. Waves 2
feet or less.

$$

IRL

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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