Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 231443
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
943 AM EST MON JAN 23 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 TROUGH OF LOW PRESSURE AVERAGING 29.70 INCHES WILL
REMAIN OVER THE GREAT LAKES TODAY BEFORE WEAK HIGH PRESSURE SETTLES
OVER THE REGION TONIGHT THROUGH TUESDAY. THE NEXT LARGER LOW
PRESSURE SYSTEM AT 29.40 INCHES WILL MOVE IN FROM THE PLAINS TUESDAY
NIGHT THROUGH WEDNESDAY. COLDER NORTHWEST WIND NEAR GALES WILL
DEVELOP OVER MARINE AREAS BEHIND THIS SYSTEM BY THURSDAY BEFORE
DIMINISHING FRIDAY INTO NEXT WEEKEND.

LCZ460-232115-
LAKE ST CLAIR-
943 AM EST MON JAN 23 2017

.REST OF TODAY...NORTH WINDS 5 TO 10 KNOTS. LIGHT RAIN LATE IN
THE MORNING...THEN A CHANCE OF LIGHT RAIN BY AFTERNOON. WAVES 2
FEET OR LESS.
.TONIGHT...NORTHEAST WINDS 5 TO 10 KNOTS IN THE EVENING...BECOMING
LIGHT AND VARIABLE OVERNIGHT. CLOUDY. A CHANCE OF LIGHT RAIN EARLY
IN THE EVENING...THEN A CHANCE OF LIGHT RAIN AND SNOW BY LATE
EVENING. WAVES 2 FEET OR LESS.
.TUESDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 10 KNOTS
LATE. CLOUDY. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS...BECOMING SOUTH
10 TO 15 KNOTS LATE. MOSTLY CLOUDY. A CHANCE OF LIGHT RAIN AFTER
MIDNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. A CHANCE
OF LIGHT RAIN...THEN A CHANCE OF LIGHT RAIN AND SNOW LATE IN THE
EVENING. WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF LIGHT RAIN AND SNOW. WAVES 2 FEET OR LESS.
.FRIDAY...WEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES 2 FEET OR
LESS.

WAVE HEIGHTS ARE FOR ICE FREE AREAS.

$$

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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