Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 211952
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 PM EDT THU AUG 21 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 WEAK SURFACE LOW FEATURE OF 29.80 INCHES WILL SLIDE
ACROSS SOUTHERN LAKE MICHIGAN BY FRIDAY BEFORE SLIPPING INTO THE
OHIO RIVER VALLEY. A BROAD SURFACE RIDGE WILL BUILD INTO EASTERN
CANADA THIS WEEKEND. THE WESTERN EDGE OF THE SURFACE RIDGE IS
EXPECTED TO EXPAND WESTWARD INFLUENCING MUCH OF LAKE HURON AND
SOUTHEASTERN MICHIGAN THROUGHOUT MUCH OF THIS UPCOMING WEEKEND.

LCZ460-220800-
LAKE ST CLAIR-
343 PM EDT THU AUG 21 2014

.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS EARLY THIS EVENING...BECOMING
LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLOUDY WITH SHOWERS AND
THUNDERSTORMS LIKELY. WAVES NEARLY CALM.
.FRIDAY...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES NEARLY CALM.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...
BECOMING LIGHT AND VARIABLE OVERNIGHT. PARTLY CLOUDY. WAVES NEARLY
CALM.
.SATURDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST 5 TO
10 KNOTS BY MID AFTERNOON. PARTLY SUNNY. WAVES NEARLY CALM.
.SATURDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING EAST 5 TO
10 KNOTS BY MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.MONDAY...SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.

$$

JVC

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





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