Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 201956
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
356 PM EDT THU APR 20 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...UNSETTLED WEATHER WILL CONTINUE INTO EARLY FRIDAY MORNING
AS LOW PRESSURE...AROUND 29.40 INCHES LIFTS THROUGH THE REGION. HIGH
PRESSURE...AROUND 30.20 INCHES...WILL BUILD OVER THE AREA BY
SATURDAY BRINGING COOLER DRIER CONDITIONS FOR THE WEEKEND.

LCZ460-210815-
LAKE ST CLAIR-
356 PM EDT THU APR 20 2017

...SEVERE THUNDERSTORM WATCH 151 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

.TONIGHT...SOUTH WINDS 10 TO 15 KNOTS VEERING TO THE WEST IN THE
LATE EVENING AND OVERNIGHT. SHOWERS AND THUNDERSTORMS EARLY IN THE
EVENING...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE
EVENING. SOME THUNDERSTORMS MAY BE SEVERE WITH DAMAGING WINDS AND
LARGE HAIL EARLY IN THE EVENING. WAVES 2 FEET OR LESS.
.FRIDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET OR
LESS.
.FRIDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS BECOMING NORTH 5 TO
10 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLOUDY UNTIL
EARLY MORNING BECOMING PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15 KNOTS
LATE IN THE AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO
10 KNOTS IN THE LATE EVENING AND OVERNIGHT. MOSTLY CLEAR. WAVES 2
FEET OR LESS.
.SUNDAY...NORTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15 KNOTS
IN THE AFTERNOON AND EVENING. SUNNY UNTIL LATE AFTERNOON BECOMING
MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.
.TUESDAY...SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS. WAVES 2 FEET OR LESS.

$$

BT

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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