Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 202045
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
345 PM EST SAT DEC 20 2014

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...HIGH PRESSURE...AVERAGING 30.30 INCHES...WILL HOLD
OVER THE EASTERN GREAT LAKES THROUGH SUNDAY NIGHT WITH A TROUGH OF
LOW PRESSURE TRACKING ACROSS THE NORTHERN GREAT LAKES BY MONDAY
MORNING. A BROADER AREA OF LOW PRESSURE WILL BEGIN TO DEVELOP OVER
THE MID MISSISSIPPI VALLEY MONDAY NIGHT AND LOOKS TO IMPACT THE
EASTERN GREAT LAKES THROUGH MID WEEK.

LCZ460-210915-
LAKE ST CLAIR-
345 PM EST SAT DEC 20 2014

.TONIGHT...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY. WAVES NEARLY
CALM.
.SUNDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 10 KNOTS BY
AFTERNOON. MOSTLY CLOUDY. WAVES NEARLY CALM.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES
2 FEET OR LESS.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY. WAVES 2 FEET
OR LESS.
.MONDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS. CLOUDY WITH A CHANCE
OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. LIGHT SHOWERS LIKELY...
THEN SHOWERS BY EVENING. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. SHOWERS WITH LIGHT SNOW
SHOWERS LIKELY. WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 20 TO 25 KNOTS. GUSTS TO 30 KNOTS. MOSTLY
CLOUDY. LIGHT SNOW SHOWERS LIKELY. WAVES 2 TO 4 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.

$$

DRK

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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