Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 191808 AAA
GLFSC

LAKE ST CLAIR FORECAST...UPDATED
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
206 PM EDT FRI MAY 19 2017

UPDATED TO EXTEND SMALL CRAFT ADVISORY

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-
206 PM EDT FRI MAY 19 2017

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