Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 180143
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
942 PM EDT WED SEP 17 2014

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 OF 30.30 INCHES CENTERED OVER THE NORTHERN
GREAT LAKES ON THURSDAY WILL SLOWLY DRIFT EASTWARD BY FRIDAY. THE
NEXT LOW PRESSURE SYSTEM...AVERAGING 29.50 INCHES...WILL THEN SLIDE
ACROSS CENTRAL CANADA AND THE NORTHERN GREAT LAKES REGION ON FRIDAY
NIGHT THROUGH SUNDAY MORNING. THIS LOW WILL BRING UNSETTLED WEATHER
TO THE GREAT LAKES.

LCZ460-180800-
LAKE ST CLAIR-
942 PM EDT WED SEP 17 2014

.REST OF TONIGHT...NORTHWEST WINDS 5 TO 10 KNOTS...BECOMING NORTH
10 TO 15 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...NORTH WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 15 KNOTS...DIMINISHING TO
5 TO 10 KNOTS BY MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. PARTLY SUNNY THROUGH EARLY
AFTERNOON...THEN CLEARING. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS LATE. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. A CHANCE OF LIGHT
SHOWERS. PARTLY CLOUDY...BECOMING MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
.SUNDAY...NORTHWEST WINDS 15 TO 20 KNOTS. A CHANCE OF LIGHT SHOWERS.
PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.MONDAY...NORTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2 FEET OR
LESS.

$$

SC

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)





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