Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 301945
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
345 PM EDT SUN APR 30 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 OVER THE CENTRAL PLAINS WILL DEEPEN TO
29.20 INCHES AS IT MOVES NORTHEAST TONIGHT. THE LOW WILL LIFT ACROSS
THE WESTERN AND NORTHERN GREAT LAKES MONDAY AND TUESDAY. THE SLOW
MOVEMENT OF THIS SYSTEM WILL KEEP WEATHER CONDITIONS UNSETTLED
THROUGH THE EARLY PART OF THE WEEK.

LCZ460-010815-
LAKE ST CLAIR-
345 PM EDT SUN APR 30 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO 10
KNOTS AFTER MIDNIGHT. SHOWERS AND A CHANCE OF THUNDERSTORMS. WAVES 2
FEET OR LESS.
.MONDAY...SOUTH WINDS 10 TO 15 KNOTS BECOMING SOUTHWEST 15 TO 20
KNOTS WITH GUSTS TO 30 KNOTS IN THE AFTERNOON. SHOWERS AND A CHANCE
OF THUNDERSTORMS IN THE MORNING...THEN PARTLY SUNNY IN THE AFTERNOON.
WAVES 1 TO 3 FEET.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS. GUSTS TO 30 KNOTS IN
THE EVENING. MOSTLY CLOUDY WITH NUMEROUS LIGHT SHOWERS. WAVES 1 TO 3
FEET.
.TUESDAY...WEST WINDS 20 TO 25 KNOTS. GUSTS TO 30 KNOTS IN THE LATE
MORNING AND AFTERNOON. CLOUDY. NUMEROUS LIGHT SHOWERS EARLY IN THE
MORNING...THEN SCATTERED LIGHT SHOWERS IN THE LATE MORNING AND
AFTERNOON. WAVES 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS
DIMINISHING TO 10 TO 15 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY.
SCATTERED LIGHT SHOWERS EARLY IN THE EVENING. WAVES 1 TO 3 FEET.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO 10
KNOTS IN THE AFTERNOON...THEN BECOMING LIGHT AND VARIABLE IN THE
EVENING. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. A CHANCE
OF SHOWERS. WAVES 2 FEET OR LESS.
.FRIDAY...NORTH WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. WAVES 1 TO 3 FEET.

$$

SF

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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