Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 190800
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
356 AM EDT TUE AUG 19 2014

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...A SLOW MOVING AND WEAKENING LOW PRESSURE SYSTEM...OF
29.60 INCHES...WILL DESCEND THROUGH THE GREAT LAKES BY THURSDAY. FOR
THE END OF THE WEEK AND WEEKEND...THERE IS NOT EXPECTED TO BE AN
ORGANIZED SURFACE HIGH...RATHER PERSISTENT TROUGHING.

LCZ460-192000-
LAKE ST CLAIR-
356 AM EDT TUE AUG 19 2014

.TODAY...SOUTH WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO 10 KNOTS
BY LATE MORNING. A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH EARLY
AFTERNOON...THEN SHOWERS AND THUNDERSTORMS LIKELY BY MID AFTERNOON.
PARTLY SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS. SHOWERS AND THUNDERSTORMS
LIKELY THROUGH MIDNIGHT...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS
AFTER MIDNIGHT. PARTLY CLOUDY EARLY IN THE EVENING...BECOMING MOSTLY
CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 10 KNOTS THROUGH EARLY AFTERNOON...
BECOMING LIGHT AND VARIABLE. A CHANCE OF SHOWERS AND THUNDERSTORMS
BY LATE MORNING. MOSTLY CLOUDY. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...LIGHT AND VARIABLE WINDS. PARTLY CLOUDY. WAVES
NEARLY CALM.
.THURSDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST 5 TO
10 KNOTS THROUGH MIDNIGHT. MOSTLY CLOUDY EARLY...BECOMING PARTLY
CLOUDY. WAVES NEARLY CALM.
.FRIDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.

$$

CB

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)






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