Great Lakes Forecast
Issued by NWS

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989
FZUS63 KDTX 180838
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
338 AM EST SAT FEB 18 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...WILL WEAKEN TO 29.30 INCHES TODAY. HIGH
PRESSURE...29.80 INCHES...WILL ENTER THE GREAT LAKES REGION
SATURDAY...AND WILL GRADUALLY STRENGTHEN AND TAKE HOLD THROUGH
MONDAY. THE NEXT SYSTEM IS EXPECTED TO INFLUENCE THE REGION BY
TUESDAY...AS LOW PRESSURE...29.70 INCHES...MOVES NORTHEAST ACROSS
LAKE SUPERIOR.

LCZ460-182115-
LAKE ST CLAIR-
338 AM EST SAT FEB 18 2017

.TODAY...SOUTHWEST WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO
10 KNOTS IN THE AFTERNOON. SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...WEST WINDS 5 TO 10 KNOTS UNTIL EARLY MORNING...BECOMING
LIGHT AND VARIABLE. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SUNDAY...LIGHT AND VARIABLE WINDS. PARTLY SUNNY. WAVES NEARLY CALM.
.SUNDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING NORTHEAST 5 TO
10 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.MONDAY...EAST WINDS 5 TO 10 KNOTS. PARTLY SUNNY...BECOMING MOSTLY
SUNNY IN THE LATE MORNING AND AFTERNOON...BECOMING PARTLY CLOUDY.
WAVES 2 FEET OR LESS.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. RAIN
LIKELY. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.

WAVE HEIGHTS ARE FOR ICE FREE AREAS.

$$

SC

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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