Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 181941
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 PM EDT MON AUG 18 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...RETREATING HIGH PRESSURE OF 30.00 INCHES WILL ALLOW A
BROAD LOW PRESSURE SYSTEM TO BUILD INTO THE GREAT LAKES REGION. THE
SURFACE LOW...AT 29.80 INCHES...WILL BE SLOW MOVING EXPECTED TO
CENTER OVER THE SOUTHERN LAKE MICHIGAN BASIN BY MIDDAY WEDNESDAY.

LCZ460-190800-
LAKE ST CLAIR-
340 PM EDT MON AUG 18 2014

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

$$

JVC

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





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