Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 200137
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
937 PM EDT TUE MAY 19 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...SURFACE HIGH PRESSURE WILL GRADUALLY BUILD INTO THE
WESTERN AND CENTRAL GREAT LAKES THROUGH TOMORROW...STRENGTHENING TO
30.20 INCHES OVER LAKE MICHIGAN. A WEAK COLD FRONT WILL THEN DROP
THROUGH LAKE HURON LATE THURSDAY AND THURSDAY NIGHT.

LCZ460-200815-
LAKE ST CLAIR-
937 PM EDT TUE MAY 19 2015

.REST OF TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO
10 TO 15 KNOTS LATE. PARTLY CLOUDY. WAVES 1 TO 3 FEET.
.WEDNESDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.WEDNESDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING WEST 5 TO
10 KNOTS BY MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 2 FEET OR
LESS.
.THURSDAY NIGHT...WEST WINDS 5 TO 10 KNOTS...VEERING TO THE NORTH
AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTH WINDS 5 TO 10 KNOTS...VEERING TO THE NORTHEAST
THROUGH MIDNIGHT. MOSTLY SUNNY...BECOMING SUNNY BY LATE MORNING...
BECOMING MOSTLY SUNNY...BECOMING CLEAR LATE. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

SC

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



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