Great Lakes Forecast
Issued by NWS

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595
FZUS63 KDTX 051452
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
950 AM EST MON DEC 5 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...A TROUGH OF LOW PRESSURE...AVERAGING 29.90
INCHES...WILL PIVOT EAST OF LAKE HURON EARLY THIS MORNING. A RIDGE
OF SURFACE HIGH PRESSURE...AVERAGING 30.10 INCHES...WILL BUILD UP
THROUGH THE OHIO VALLEY LATER TODAY BEFORE SHIFTING EASTWARD TO THE
MID ATLANTIC TONIGHT. THE NEXT LOW PRESSURE SYSTEM...AT 29.40
INCHES...WILL LIFT NORTHWARD INTO THE NORTHERN PLAINS ON TUESDAY. A
SURFACE TROUGH...AT 29.90 INCHES...WILL PIVOT NORTHWARD THROUGH
SOUTHEASTERN MICHIGAN TUESDAY NIGHT. SURFACE TROUGHING WILL THEN
PERSIST OVER THE CENTRAL GREAT LAKES THROUGH THE END OF THE WORK
WEEK.

LCZ460-052100-
LAKE ST CLAIR-
950 AM EST MON DEC 5 2016

.REST OF TODAY...WEST WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 5 TO
10 KNOTS LATE. MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS...BACKING TO THE SOUTHEAST
AFTER MIDNIGHT...THEN INCREASING TO 10 TO 15 KNOTS LATE. PARTLY
CLOUDY MAINLY BEFORE MIDNIGHT...BECOMING MOSTLY CLOUDY OVERNIGHT.
WAVES 2 FEET OR LESS.
.TUESDAY...EAST WINDS 15 TO 20 KNOTS...BECOMING SOUTHEAST 10 TO
15 KNOTS BY AFTERNOON. CLOUDY. A CHANCE OF LIGHT RAIN IN THE
AFTERNOON. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...WEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY IN THE
EVENING...BECOMING PARTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY THROUGH MID
AFTERNOON...BECOMING MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY. WAVES 2 FEET
OR LESS.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY. 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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