Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 201942 RRA
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
342 PM EDT WED JUL 20 2016

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...RIDGE OF HIGH PRESSURE OVER THE MID ATLANTIC...AVERAGING
30.10 INCHES...WILL CONTINUE TO SHIFT EASTWARD THROUGH THURSDAY.  A
WEAK LOW PRESSURE SYSTEM...AVERAGING 29.70 INCHES...WILL MOVE EAST
ACROSS SOUTHERN ONTARIO THURSDAY NIGHT BRINGING A CHANCE FOR
UNSETTLED WEATHER CONDITIONS.  HIGH PRESSURE THEN BUILDS BACK IN OVER
THE GREAT LAKES REGION BY SATURDAY.

LCZ460-210800-
LAKE ST CLAIR-
342 PM EDT WED JUL 20 2016

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

$$

DG

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


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