Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 211943
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
343 PM 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...AVERAGING 29.20 INCHES...CURRENTLY OVER
THE JAMES BAY WILL START TO SHIFT OFF TOWARDS THE EAST COAST OVER
THE NEXT FEW DAYS.  THE NEXT COLD FRONT IS EXPECTED TO SLIDE THROUGH
THE CENTRAL GREAT LAKES EARLY WEDNESDAY MORNING.

LCZ460-220815-
LAKE ST CLAIR-
343 PM EDT TUE APR 21 2015

...GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.TONIGHT...SOUTHWEST WINDS 20 TO 25 KNOTS...GUSTING TO 35 KNOT
GALES EARLY...THEN DIMINISHING TO 10 TO 20 KNOTS. MOSTLY CLOUDY
WITH A CHANCE OF LIGHT SHOWERS EARLY THIS EVENING...THEN PARTLY
CLOUDY BY MIDNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...WEST WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS WITH GUSTS TO 30 KNOTS BY LATE MORNING. MOSTLY CLOUDY WITH
SCATTERED LIGHT RAIN AND SNOW 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 10 TO 15 KNOTS. MOSTLY CLOUDY. WAVES
2 FEET OR LESS.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY
THROUGH MIDNIGHT...THEN CLEARING. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING NORTH 5 TO
10 KNOTS THROUGH MIDNIGHT. MOSTLY SUNNY...BECOMING PARTLY SUNNY BY
LATE MORNING...BECOMING MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.SUNDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

SF

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



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