Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 010142
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
942 PM EDT THU APR 30 2015

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...30.20 INCHES...WILL BUILD INTO THE AREA
ON FRIDAY AND SATURDAY AS A TROUGH OF LOW PRESSURE PROGRESSES TO THE
MID ATLANTIC SEABOARD. THIS HIGH WILL ALSO SETTLE TO THE MID ATLANTIC
LATE THIS WEEKEND AS LOW PRESSURE ORGANIZES OVER CENTRAL CANADA AND
LIFTS TO HUDSON BAY. THIS WILL DRIVE A FRONTAL BOUNDARY INTO THE
REGION BY LATE SUNDAY NIGHT AND MONDAY.

&&

LCZ460-010815-
LAKE ST CLAIR-
942 PM EDT THU APR 30 2015

.REST OF TONIGHT...NORTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY MIDNIGHT...THEN DIMINISHING TO 5 TO 10 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY...BECOMING PARTLY CLOUDY OVERNIGHT.
SCATTERED SPRINKLES THIS EVENING. WAVES 2 FEET OR LESS.
.FRIDAY...NORTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO 15 KNOTS
BY MID AFTERNOON. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS EARLY IN THE EVENING...
BECOMING LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.SATURDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY LATE MORNING. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5 TO
10 KNOTS LATE. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHWEST WINDS 5 TO 10 KNOTS...BECOMING SOUTH 10 TO
15 KNOTS BY MID AFTERNOON...THEN DIMINISHING TO 5 TO 10 KNOTS
THROUGH MIDNIGHT. MOSTLY SUNNY...THEN MOSTLY CLEAR WITH A CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES 2 FEET OR LESS.
.MONDAY...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.TUESDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH SHOWERS
AND THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.

$$

DG

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


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