Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 211944
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
344 PM EDT THU JUL 21 2016

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...A LOW PRESSURE SYSTEM...AVERAGING 29.60 INCHES...WILL
CONTINUE TO MOVE OVER THE NORTHERN GREAT LAKES REGION THIS AFTERNOON
BRINGING UNSETTLED MARINE CONDITIONS.  HIGH PRESSURE THEN BUILDS
BACK IN OVER THE GREAT LAKES FRIDAY AND INTO SATURDAY.

LCZ460-220815-
LAKE ST CLAIR-
344 PM EDT THU JUL 21 2016

.TONIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS...BECOMING WEST 5 TO
10 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY...BECOMING PARTLY CLOUDY BY
MIDNIGHT...BECOMING MOSTLY CLOUDY OVERNIGHT. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY THIS EVENING. WAVES 2 FEET OR LESS.
.FRIDAY...WEST WINDS 5 TO 10 KNOTS EARLY...BACKING TO THE
SOUTHWEST...THEN BACKING TO THE EAST BY EARLY AFTERNOON...BECOMING
LIGHT AND VARIABLE. PARTLY SUNNY. A CHANCE OF SHOWERS AND
THUNDERSTORMS BY LATE MORNING. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING NORTHWEST 5 TO
10 KNOTS BY MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...LIGHT AND VARIABLE WINDS...BECOMING NORTHEAST 5 TO
10 KNOTS LATE. SUNNY. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.SUNDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY SUNNY...BECOMING MOSTLY
CLOUDY LATE...BECOMING PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS...THEN SHOWERS AND THUNDERSTORMS LIKELY THROUGH
MIDNIGHT. WAVES 2 FEET OR LESS.
.MONDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.TUESDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.

$$

JVC

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



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