Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 181941
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
341 PM EDT THU MAY 18 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...30.30 INCHES...WILL PUSH IN FROM THE
NORTHERN PLAINS INTO THE NORTHERN GREAT LAKES THROUGH
FRIDAY...BRINGING DRY CONDITIONS AND DIMINISHED WINDS FROM THE N/NE.
LOW PRESSURE...29.70 INCHES...WILL THEN MOVE NORTHEAST FROM KANSAS
INTO NORTHERN WISCONSIN SATURDAY INTO SUNDAY...BRINGING THE CHANCE
FOR RAIN AND THUNDERSTORMS. WINDS WILL START OUT FROM THE EAST ON
SATURDAY AND WILL TURN SOUTHEAST BY SUNDAY...GUSTING BETWEEN 15 - 20
KTS.

LCZ460-190815-
LAKE ST CLAIR-
341 PM EDT THU MAY 18 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

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

$$

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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