Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 181947
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
346 PM EDT FRI APR 18 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...LOW PRESSURE WILL EXIT EAST TONIGHT AS STRONG HIGH
PRESSURE...30.50 INCHES...BUILDS OVER THE NORTHERN AND CENTRAL GREAT
LAKES. THE HIGH WILL REMAIN OVER THE AREA ON SATURDAY BEFORE MOVING
EAST LATE SATURDAY NIGHT. LOW PRESSURE PASSING THROUGH ONTARIO WILL
THEN DROP A FRONTAL BOUNDARY OVER LAKE HURON EARLY SUNDAY...WHERE IT
WILL REMAIN UNTIL ANOTHER LOW PRESSURE SYSTEM PASSING THROUGH THE
GREAT LAKES DRAWS IT SOUTHWARD MONDAY AND MONDAY NIGHT.

LCZ460-190800-
LAKE ST CLAIR-
346 PM EDT FRI APR 18 2014

.TONIGHT...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.
.SATURDAY...NORTHEAST WINDS 5 TO 10 KNOTS THROUGH MID AFTERNOON...
BECOMING LIGHT AND VARIABLE. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.SATURDAY NIGHT...LIGHT AND VARIABLE WINDS...BECOMING SOUTHEAST 5 TO
10 KNOTS AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY SUNNY. WAVES 2 FEET OR
LESS.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...
BECOMING LIGHT AND VARIABLE OVERNIGHT. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.MONDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.TUESDAY...NORTH WINDS 10 TO 15 KNOTS. A CHANCE OF LIGHT SHOWERS.
PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTHEAST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.

$$

HLO

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





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