Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 220155
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
955 PM EDT MON JUL 21 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...A COLD FRONT AVERAGING 29.90 INCHES WILL SWING ACROSS
THE CENTRAL GREAT LAKES TUESDAY NIGHT. HIGH PRESSURE OF 30.10 INCHES
WILL THEN SLOWLY BUILD IN DURING WEDNESDAY...AND WILL BE IN PLACE
FOR THURSDAY. THIS HIGH SHOULD PERSIST INTO FRIDAY AS WELL.

LCZ460-220815-
LAKE ST CLAIR-
955 PM EDT MON JUL 21 2014

.REST OF TONIGHT...SOUTH WINDS 5 TO 10 KNOTS...BECOMING LIGHT AND
VARIABLE OVERNIGHT. CLEAR. WAVES 2 FEET OR LESS.
.TUESDAY...LIGHT AND VARIABLE WINDS...BECOMING SOUTH 10 TO 15 KNOTS.
MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS. A CHANCE OF SHOWERS
AND THUNDERSTORMS. PARTLY CLOUDY THROUGH MIDNIGHT...BECOMING MOSTLY
CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTH WINDS 10 TO 15 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MID AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR
LESS.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO
10 KNOTS BY MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.THURSDAY...NORTH WINDS 5 TO 10 KNOTS...BECOMING LIGHT AND VARIABLE.
MOSTLY SUNNY...BECOMING CLEAR. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. CLEAR. WAVES 2 FEET OR
LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS. PARTLY CLOUDY. WAVES 2 FEET OR LESS.

$$

BT

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







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