Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 210758
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
357 AM 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.

LCZ460-212000-
LAKE ST CLAIR-
357 AM EDT THU AUG 21 2014

.TODAY...LIGHT AND VARIABLE WINDS. PATCHY FOG EARLY. A CHANCE OF
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. PARTLY SUNNY. WAVES
NEARLY CALM.
.TONIGHT...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES NEARLY CALM.
.FRIDAY...LIGHT AND VARIABLE WINDS. MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...LIGHT AND VARIABLE WINDS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.SATURDAY...LIGHT AND VARIABLE WINDS...BECOMING EAST 10 TO 15 KNOTS
THROUGH MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. 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.

$$

CB

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





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