Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 221950
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
345 PM EDT TUE JUL 22 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...LOW PRESSURE AVERAGING 29.50 INCHES WILL TRACK EASTWARD
ACROSS LAKE SUPERIOR TONIGHT INTO WESTERN ONTARIO. AN ASSOCIATED
COLD FRONT WILL SIMULTANEOUSLY SETTLE SOUTHWARD THROUGH LOWER
MICHIGAN. SURFACE HIGH PRESSURE...AVERAGING 30.20 INCHES...WILL THEN
BUILD INTO THE GREAT LAKES THROUGH THE REMAINDER OF THE WEEK.

LCZ460-230800-
LAKE ST CLAIR-
345 PM EDT TUE JUL 22 2014

.TONIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS...BECOMING WEST 10 TO
15 KNOTS LATE. A CHANCE OF SHOWERS AND THUNDERSTORMS. PARTLY CLOUDY
THROUGH MIDNIGHT...BECOMING MOSTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR
LESS.
.WEDNESDAY...NORTH WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.THURSDAY...NORTH WINDS 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 2 FEET OR
LESS.
.THURSDAY NIGHT...NORTH WINDS 5 TO 10 KNOTS EARLY IN THE EVENING...
BECOMING LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. SUNNY THROUGH EARLY
AFTERNOON...BECOMING MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.SUNDAY...WEST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.

$$

MM

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






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