Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 191356 RRA
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
954 AM EDT FRI MAY 19 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...AVERAGING 30.40 INCHES...WILL SLIDE
ACROSS THE NORTHERN GREAT LAKES THIS AFTERNOON AND TONIGHT. THE NEXT
LOW PRESSURE SYSTEM...AVERAGING 29.70 INCHES...WILL THEN LIFT
NORTHEAST THROUGH THE WESTERN GREAT LAKES SATURDAY INTO
SUNDAY...BRINGING THE CHANCE FOR RAIN AND THUNDERSTORMS.

LCZ460-192000-
LAKE ST CLAIR-
954 AM EDT FRI MAY 19 2017

.REST OF TODAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY.
WAVES 2 FEET OR LESS.
.TONIGHT...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH A
CHANCE OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.SATURDAY...EAST WINDS 10 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS
IN THE LATE MORNING AND EARLY AFTERNOON...THEN DIMINISHING TO 10 TO
15 KNOTS LATE IN THE AFTERNOON. MOSTLY CLOUDY. A CHANCE OF LIGHT
SHOWERS EARLY IN THE MORNING. A CHANCE OF SHOWERS AND THUNDERSTORMS
LATE IN THE AFTERNOON. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...EAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST 5 TO
10 KNOTS EARLY IN THE MORNING. 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 10 TO 15 KNOTS VEERING TO THE WEST IN THE
EVENING. CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS
UNTIL LATE AFTERNOON...THEN PARTLY CLOUDY WITH A CHANCE OF LIGHT
SHOWERS IN THE EVENING. WAVES 2 FEET OR LESS.
.MONDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. SHOWERS
LIKELY. WAVES 2 FEET OR LESS.

$$

HLO

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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