Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 270743
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 AM EDT TUE SEP 27 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...LOW PRESSURE...29.40 INCHES...WILL SLOWLY PUSH
SOUTHWARD INTO SOUTHERN LAKE SUPERIOR BY THIS EVENING WHILE
WEAKENING TO 29.60 INCHES. THE LARGE AREA OF LOW PRESSURE WILL
WEAKEN FURTHER AS IT DIGS DOWN INTO THE OHIO VALLEY WEDNESDAY AND
THURSDAY. A RIDGE OF HIGH PRESSURE WILL TAKE HOLD OF WESTERN ONTARIO.

LCZ460-272015-
LAKE ST CLAIR-
343 AM EDT TUE SEP 27 2016

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SOUTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 25 KNOTS.
PARTLY SUNNY. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KNOTS...BECOMING SOUTH 5 TO
10 KNOTS. PARTLY CLOUDY EARLY IN THE EVENING...BECOMING MOSTLY
CLOUDY OVERNIGHT. A CHANCE OF WATERSPOUTS. A CHANCE OF SHOWERS
LATE. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTH WINDS 5 TO 10 KNOTS...BECOMING SOUTHEAST 10 TO
15 KNOTS BY MID AFTERNOON. MOSTLY CLOUDY. A CHANCE OF WATERSPOUTS. A
CHANCE OF SHOWERS THROUGH EARLY AFTERNOON. SHOWERS LIKELY BY MID
AFTERNOON. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING NORTHEAST
5 TO 10 KNOTS BY MIDNIGHT. CLOUDY WITH SHOWERS LIKELY. WAVES 2 FEET
OR LESS.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. SHOWERS
LIKELY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH SHOWERS
LIKELY. WAVES 2 FEET OR LESS.
.SATURDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS. WAVES 2 FEET OR LESS.

$$

SF

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC (ALL LOWER CASE)

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



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