Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 170840
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 AM EST TUE JAN 17 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...LOW PRESSURE...29.80 INCHES...WILL MOVE FROM FAR
SOUTHERN LAKE MICHIGAN EARLY THIS MORNING TO SOUTHERN LAKE HURON
THIS AFTERNOON. THE LOW WILL THEN MOVE INTO LAKE ONTARIO TONIGHT.
HIGH PRESSURE...30.20 INCHES...WILL EXPAND INTO THE OHIO VALLEY AND
SOUTHERN GREAT LAKES REGION ON WEDNESDAY AND WILL INFLUENCE THE
REGION INTO THURSDAY.

LCZ460-172115-
LAKE ST CLAIR-
340 AM EST TUE JAN 17 2017

.TODAY...EAST WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST IN THE
AFTERNOON...THEN BECOMING WEST LATE. RAIN WITH A CHANCE OF
THUNDERSTORMS IN THE MORNING. FOG THROUGH MID AFTERNOON.
.TONIGHT...WEST WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO 10 KNOTS
BY LATE EVENING. CLOUDY. A CHANCE OF LIGHT RAIN MAINLY BEFORE
MIDNIGHT.
.WEDNESDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY.
.THURSDAY...SOUTHWEST WINDS 5 TO 10 KNOTS...BECOMING LIGHT AND
VARIABLE. PARTLY SUNNY...BECOMING MOSTLY SUNNY...BECOMING PARTLY
CLOUDY.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
LIGHT RAIN.
.SATURDAY...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE OF
RAIN AND SNOW.

WAVES OMITTED DUE TO ICE COVERAGE.

$$

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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