Great Lakes Forecast
Issued by NWS

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210
FZUS63 KDTX 230200
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1000 PM EDT WED MAR 22 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...HIGH PRESSURE OF 30.60 INCHES WILL BE OVER THE CENTRAL
GREAT LAKES TONIGHT...SLIDING TO THE EAST TOMORROW. THIS WILL ALLOW
A WARM FRONT TO LIFT INTO THE REGION TOMORROW NIGHT...STALLING OUT
ON FRIDAY OVER NORTHERN LAKE HURON. THE FRONTAL BOUNDARY WILL THEN
DROP SOUTH FRIDAY NIGHT INTO SATURDAY, AS HIGH PRESSURE BUILDS OVER
ONTARIO WITH LOW PRESSURE OF 29.70 INCHES SLOWLY TRACKING NORTHEAST
OUT FROM THE SOUTHERN PLAINS.

LCZ460-230800-
LAKE ST CLAIR-
1000 PM EDT WED MAR 22 2017

.REST OF TONIGHT...EAST WINDS 5 TO 10 KNOTS THIS EVENING BECOMING
LIGHT AND VARIABLE. CLEAR. WAVES 2 FEET OR LESS.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15
KNOTS IN THE AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR LESS.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 15 KNOTS. A CHANCE OF LIGHT RAIN
IN THE EVENING...THEN LIGHT RAIN AFTER MIDNIGHT. WAVES 2 FEET OR
LESS.
.FRIDAY...SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO 20
KNOTS IN THE AFTERNOON. RAIN EARLY IN THE MORNING...THEN A CHANCE OF
LIGHT RAIN IN THE LATE MORNING AND EARLY AFTERNOON. WAVES 2 FEET OR
LESS.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO
10 KNOTS AFTER MIDNIGHT. CLOUDY WITH A CHANCE OF LIGHT RAIN. WAVES 2
FEET OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS BACKING TO THE EAST IN THE
AFTERNOON...THEN INCREASING TO 10 TO 15 KNOTS IN THE EVENING. LIGHT
RAIN. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. RAIN. WAVES 2 FEET OR
LESS.
.MONDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH RAIN LIKELY.
WAVES 2 FEET OR LESS.

$$

MR

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC

GRAPHICAL MARINE FORECASTS ARE AVAILABLE AT WEATHER.GOV/GREATLAKES



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