Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 071348
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
948 AM EDT TUE JUL 7 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...A COLD FRONT AVERAGING 29.80 INCHES WILL PASS
THROUGH THE CENTRAL GREAT LAKES TODAY. HIGH PRESSURE OF 30.10
INCHES WILL PASS THROUGH THE AREA ON WEDNESDAY. A COMPACT LOW
PRESSURE SYSTEM WILL THEN MOVE THROUGH THE NORTHERN OHIO VALLEY
WEDNESDAY NIGHT INTO THURSDAY.

LCZ460-072015-
LAKE ST CLAIR-
948 AM EDT TUE JUL 7 2015

.REST OF TODAY...SOUTH WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS BY LATE MORNING...THEN VEERING TO THE NORTHWEST LATE.
PERIODS OF SHOWERS AND NUMEROUS THUNDERSTORMS BY LATE MORNING...THEN
NUMEROUS SHOWERS AND THUNDERSTORMS LATE. WAVES 1 TO 3 FEET.
.TONIGHT...NORTH WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MIDNIGHT. MOSTLY CLOUDY EARLY IN THE EVENING...BECOMING
PARTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTH WINDS 10 TO 15 KNOTS...BECOMING NORTHEAST 5 TO
10 KNOTS BY MID AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS EARLY IN THE
EVENING...BECOMING LIGHT AND VARIABLE OVERNIGHT. PARTLY CLOUDY EARLY
IN THE EVENING...BECOMING MOSTLY CLOUDY OVERNIGHT. A CHANCE OF LIGHT
SHOWERS. WAVES 2 FEET OR LESS.
.THURSDAY...LIGHT AND VARIABLE WINDS...BECOMING WEST 5 TO 10 KNOTS
BY MID AFTERNOON...THEN BACKING TO THE SOUTH THROUGH MIDNIGHT.
MOSTLY CLOUDY WITH A CHANCE OF LIGHT SHOWERS THROUGH MID AFTERNOON...
THEN PARTLY CLOUDY LATE. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. A CHANCE OF
SHOWERS. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

SS

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


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