Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 211342
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
942 AM EDT TUE APR 21 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...LOW PRESSURE OF 29.10 INCHES IS LIFTING STRAIGHT
NORTHWARD TO JAMES BAY THIS MORNING. THE LOW WILL THEN STALL OUT AND
SLOWLY WEAKEN THROUGH MIDWEEK. THE NEXT COLD FRONT IS EXPECTED TO
SLIDE THROUGH THE CENTRAL GREAT LAKES EARLY WEDNESDAY MORNING.

LCZ460-212015-
LAKE ST CLAIR-
942 AM EDT TUE APR 21 2015

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 20 KNOTS INCREASING TO 20
TO 25 KNOTS WITH GUSTS TO 30 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF LIGHT SHOWERS. WAVES 1 TO 3 FEET.
.TONIGHT...WEST WINDS 10 TO 15 KNOTS WITH GUSTS TO 25 KNOTS EARLY.
MOSTLY CLOUDY WITH A CHANCE OF LIGHT SHOWERS EARLY IN THE
EVENING...THEN PARTLY CLOUDY BY MIDNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...WEST WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS BY LATE MORNING. MOSTLY CLOUDY WITH A CHANCE OF LIGHT
SHOWERS. WAVES 1 TO 3 FEET.
.WEDNESDAY NIGHT...WEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MIDNIGHT. MOSTLY CLOUDY THROUGH MIDNIGHT...BECOMING
PARTLY CLOUDY OVERNIGHT. WAVES 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MID AFTERNOON. PARTLY SUNNY...BECOMING MOSTLY CLOUDY BY
LATE MORNING...BECOMING PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.

$$

SF

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



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