Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 150745
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
345 AM EDT WED APR 15 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...HIGH PRESSURE...AVERAGING 30.40 INCHES...WILL HOLD OVER
THE CENTRAL GREAT LAKES TODAY. WEAK LOW PERSSURE WILL SLIDE INTO
SOUTHERN LOWER MICHIGAN TOMORROW. A WEAK PRESSURE GRADIENT WILL BE
AROUND ON FRIDAY...AHEAD OF A COLD FRONT...WHICH WILL MOVE THROUGH
LAKE HURON FRIDAY NIGHT.

LCZ460-152015-
LAKE ST CLAIR-
345 AM EDT WED APR 15 2015

.TODAY...NORTHEAST WINDS 5 TO 10 KNOTS...BECOMING EAST 10 TO
15 KNOTS LATE. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...NORTHEAST WINDS 5 TO 10 KNOTS...BECOMING EAST 10 TO
15 KNOTS BY MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY LATE MORNING. MOSTLY CLOUDY. SCATTERED LIGHT SHOWERS
EARLY...THEN NUMEROUS LIGHT SHOWERS BY LATE MORNING. WAVES 2 FEET OR
LESS.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS...VEERING TO THE WEST
LATE. CLOUDY WITH SCATTERED LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 5 TO 10 KNOTS...BACKING TO THE SOUTHWEST
BY MID AFTERNOON. PARTLY SUNNY...BECOMING MOSTLY SUNNY BY MID
AFTERNOON...BECOMING PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
LIGHT SHOWERS. WAVES 2 FEET OR LESS.

$$

SF

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



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