Great Lakes Forecast
Issued by NWS

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749
FZUS63 KDTX 250739
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
337 AM EDT MON JUL 25 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...LOW PRESSURE...29.60 INCHES...WILL TRACK FROM NORTHERN
ONTARIO THIS MORNING TO NORTHERN QUEBEC BY AFTERNOON. THIS SYSTEM
WILL DRIVE A COLD FRONT INTO THE EASTERN GREAT LAKES THIS AFTERNOON.
HIGH PRESSURE...30.00 INCHES...WILL THEN MOVE FROM THE UPPER MIDWEST
TODAY INTO THE SOUTHERN GREAT LAKES BY TUESDAY AFTERNOON. THE HIGH
WILL SINK SOUTH BY MIDWEEK AS A FRONT SETTLES INTO THE REGION FROM
THE NORTH.

LCZ460-252000-
LAKE ST CLAIR-
337 AM EDT MON JUL 25 2016

.TODAY...WEST WINDS 5 TO 10 KNOTS. PARTLY SUNNY. WAVES 2 FEET OR
LESS.
.TONIGHT...NORTHWEST WINDS 5 TO 10 KNOTS. CLEAR. WAVES 2 FEET OR
LESS.
.TUESDAY...LIGHT AND VARIABLE WINDS. SUNNY. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...
BECOMING LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.WEDNESDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY MID AFTERNOON...THEN BACKING TO THE NORTHEAST THROUGH
MIDNIGHT. MOSTLY SUNNY...THEN PARTLY CLOUDY WITH A CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH MIDNIGHT. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHEAST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.FRIDAY...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

HLO

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



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