Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 300753 RRA
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
352 AM EDT TUE JUN 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...A LOW PRESSURE SYSTEM...AVERAGING 29.70 INCHES...WILL
TRACK ACROSS MICHIGAN TODAY BEFORE LIFTING THROUGH ONTARIO TONIGHT.
A DOME OF HIGH PRESSURE WILL BUILD OVER THE WESTERN AND NORTHERN
GREAT LAKES TONIGHT...BEFORE EXPANDING EAST TO ENCOMPASS THE CENTRAL
GREAT LAKES THURSDAY AND THURSDAY NIGHT.

LCZ460-302000-
LAKE ST CLAIR-
352 AM EDT TUE JUN 30 2015

.TODAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 5 TO 10 KNOTS BY
MID AFTERNOON. MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 5 TO 10 KNOTS...VEERING TO THE NORTHWEST BY
MIDNIGHT...THEN INCREASING TO 10 TO 15 KNOTS LATE. MOSTLY CLOUDY...
BECOMING PARTLY CLOUDY AFTER MIDNIGHT...BECOMING MOSTLY CLOUDY. A
CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES 2 FEET
OR LESS.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO
10 KNOTS BY LATE MORNING...THEN VEERING TO THE NORTH LATE. MOSTLY
CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS BY LATE MORNING. WAVES
2 FEET OR LESS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH
A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH MIDNIGHT...THEN PARTLY
CLOUDY AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
.THURSDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY SUNNY THROUGH MID
AFTERNOON...BECOMING CLEAR. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.

$$

HLO

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


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