Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 111440
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
940 AM EST WED JAN 11 2017

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...STRONG LOW PRESSURE WILL RAPIDLY LIFT TO JAMES BAY THIS
MORNING AT 28.90 INCHES. SUBTLE RIDGING...30.00 INCHES...WILL BUILD
INTO THE CENTRAL GREAT LAKES TODAY BEFORE A WEAK WAVE OF LOW
PRESSURE AT 29.60 INCHES LIFTS NORTHWARD ALONG A FRONTAL BOUNDARY
TONIGHT NEAR DETROIT. THE END OF THE WEEK AND WEEKEND WILL BE
DOMINATED BY A VERY STRONG HIGH PRESSURE SYSTEM...30.90
INCHES...THAT WILL PUSH DIRECTLY ACROSS THE GREAT LAKES.

LCZ460-112115-
LAKE ST CLAIR-
940 AM EST WED JAN 11 2017

.REST OF TODAY...SOUTH WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS LATE. MOSTLY CLOUDY. LIGHT RAIN LIKELY LATE.
.TONIGHT...SOUTH WINDS 15 TO 20 KNOTS...VEERING TO THE WEST AFTER
MIDNIGHT...THEN BECOMING NORTHWEST 5 TO 10 KNOTS LATE. RAIN AND A
CHANCE OF THUNDERSTORMS MAINLY BEFORE MIDNIGHT...THEN RAIN LIKELY
LATE.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KNOTS. CLOUDY. RAIN LIKELY IN
THE MORNING...THEN A CHANCE OF LIGHT SLEET IN THE AFTERNOON. A
CHANCE OF LIGHT RAIN AND SNOW BY AFTERNOON.
.THURSDAY NIGHT...WEST WINDS 5 TO 10 KNOTS...BECOMING NORTHWEST
10 TO 15 KNOTS BY LATE EVENING...THEN DIMINISHING TO 5 TO 10 KNOTS
LATE. MOSTLY CLOUDY IN THE EVENING...BECOMING PARTLY CLOUDY
OVERNIGHT.
.FRIDAY...NORTH WINDS 5 TO 10 KNOTS...VEERING TO THE NORTHEAST BY
EVENING. PARTLY CLOUDY.
.SATURDAY...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY.
.SUNDAY...LIGHT AND VARIABLE WINDS. PARTLY CLOUDY.

WAVES OMITTED DUE TO ICE COVERAGE.

$$

SS

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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