Great Lakes Forecast
Issued by NWS

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286
FZUS63 KDTX 120905
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
403 AM EST THU JAN 12 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...A SECONDARY SURFACE WAVE OF LOW PRESSURE...AT 29.80
INCHES...WILL LIFT NORTHEASTWARD TODAY ALONG A FRONTAL BOUNDARY
DRAPED OVER NORTHERN OHIO. SURFACE RIDGING WILL PUSH INTO THE
CENTRAL GREAT LAKES TONIGHT. A SPRAWLING ARCTIC HIGH PRESSURE
SYSTEM...30.90 INCHES...WILL SLOWLY EXPAND ACROSS THE GREAT LAKES
REGION THIS WEEKEND.

LCZ460-122100-
LAKE ST CLAIR-
403 AM EST THU JAN 12 2017

.TODAY...NORTH WINDS 5 TO 10 KNOTS...BECOMING NORTHWEST 10 TO
15 KNOTS IN THE AFTERNOON...THEN DIMINISHING TO 5 TO 10 KNOTS LATE.
RAIN AND FREEZING RAIN IN THE MORNING...THEN A CHANCE OF LIGHT RAIN
AND SNOW IN THE AFTERNOON.
.TONIGHT...NORTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY.
.FRIDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY SUNNY.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS EARLY IN THE EVENING...
BECOMING LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLOUDY.
.SATURDAY...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY...BECOMING
PARTLY CLOUDY.
.SUNDAY...LIGHT AND VARIABLE WINDS. PARTLY CLOUDY.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH RAIN AND
SNOW LIKELY.

WAVES OMITTED DUE TO ICE COVERAGE.

$$

CB

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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