Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 201947
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
347 PM EDT SUN JUL 20 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...HIGH PRESSURE...30.10 INCHES...WILL SLOWLY MOVE FROM THE
CENTRAL LAKES REGION TO THE EAST COAST BY TUESDAY. A SLOW MOVING
FRONTAL BOUNDARY WILL TRACK ACROSS THE NORTHERN PLAINS AND UPPER
MIDWEST ON MONDAY AND TUESDAY. THIS COLD FRONT WILL THEN ADVANCE
ACROSS LAKE HURON AND THE EASTERN GREAT LAKES REGION TUESDAY NIGHT
INTO WEDNESDAY.

LCZ460-210800-
LAKE ST CLAIR-
347 PM EDT SUN JUL 20 2014

.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...BECOMING
LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLEAR. WAVES NEARLY CALM.
.MONDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 10 KNOTS BY
MID AFTERNOON. SUNNY. WAVES 2 FEET OR LESS.
.MONDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS EARLY IN THE EVENING...
BECOMING LIGHT AND VARIABLE OVERNIGHT. CLEAR. WAVES 2 FEET OR LESS.
.TUESDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 10 KNOTS
BY LATE MORNING...THEN INCREASING TO 10 TO 15 KNOTS BY EARLY
AFTERNOON...DIMINISHING TO 5 TO 10 KNOTS LATE. MOSTLY SUNNY. WAVES
2 FEET OR LESS.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.WEDNESDAY...WEST WINDS 5 TO 10 KNOTS...BECOMING NORTH 10 TO
15 KNOTS BY MID AFTERNOON. MOSTLY CLOUDY WITH A CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH MID AFTERNOON...THEN PARTLY CLOUDY LATE.
WAVES 2 FEET OR LESS.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

RBP

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





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