Great Lakes Forecast
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137
FZUS63 KDTX 271943
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
341 PM 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 AROUND 29.40 INCHES OVER NORTHERN LAKE
SUPERIOR THIS AFTERNOON WILL WEAKEN TO AROUND 29.90 INCHES BY
WEDNESDAY AFTERNOON AS IT MOVES SOUTH TOWARD SOUTHERN LAKE MICHIGAN.
THIS WEAK AREA OF LOW PRESSURE WILL CONTINUE TO DRIFT AROUND THE
OHIO VALLEY THROUGH THE END OF THE WEEK WHILE A RIDGE OF HIGH
PRESSURE TAKES HOLD OVER ONTARIO AND QUEBEC.

LCZ460-280800-
LAKE ST CLAIR-
341 PM EDT TUE SEP 27 2016

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS...BECOMING SOUTH 5 TO
10 KNOTS BY MIDNIGHT. GUSTS TO 25 KNOTS THROUGH EARLY THIS EVENING.
PARTLY CLOUDY THROUGH MIDNIGHT...BECOMING MOSTLY CLOUDY OVERNIGHT. A
CHANCE OF WATERSPOUTS. 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.
LIGHT SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS BY LATE MORNING.
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 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY LATE MORNING. MOSTLY CLOUDY WITH SHOWERS LIKELY. WAVES
2 FEET OR LESS.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH
SHOWERS LIKELY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KNOTS. CLOUDY. SHOWERS LIKELY...
THEN A CHANCE OF LIGHT SHOWERS THROUGH MIDNIGHT. WAVES 2 FEET OR
LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS. WAVES 2 FEET OR LESS.

$$

DG

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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