Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 222003
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 PM EDT WED APR 22 2015

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 29.50 INCHES...WILL DISSIPATE
OVER JAMES BAY TONIGHT. MEANWHILE LOW PRESSURE...AVERAGING 29.40
INCHES...WILL REMAIN RELATIVELY STATIONARY OVER MAINE TONIGHT INTO
THURSDAY. HIGH PRESSURE...AVERAGING 30.10 INCHES...WILL BUILD INTO
THE UPPER MIDWEST ON THURSDAY.

LCZ460-230815-
LAKE ST CLAIR-
403 PM EDT WED APR 22 2015

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...WEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO 15 KNOTS
BY MIDNIGHT. MOSTLY CLOUDY. WAVES 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MID AFTERNOON. MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS...DIMINISHING TO
5 TO 10 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY THROUGH MIDNIGHT...THEN
CLEARING. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY LATE MORNING...THEN BECOMING NORTH 5 TO 10 KNOTS LATE.
MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.
.SATURDAY...NORTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.SUNDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.MONDAY...NORTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

DT

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


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