Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 222055
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
355 PM EST SUN FEB 22 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...ARCTIC AIR WILL RETURN OVER LAKE HURON AND LOWER
MICHIGAN TODAY AND TONIGHT. HIGH PRESSURE WILL THEN MOVE QUICKLY
THROUGH THE GREAT LAKES MONDAY IN ADVANCE OF A STRONGER LOW PRESSURE
SYSTEM EXPECTED TO ARRIVE FROM NORTHERN ONTARIO TUESDAY. THIS SYSTEM
IS PROJECTED TO BE STRONG ENOUGH FOR POTENTIAL SOUTHWEST GALES
TUESDAY. NORTHWEST WIND WILL DIMINISH BUT BRING MORE ARCTIC AIR INTO
THE REGION FOR THE SECOND HALF OF THE WEEK.

LCZ460-230915-
LAKE ST CLAIR-
355 PM EST SUN FEB 22 2015

.TONIGHT...NORTHWEST WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS LATE IN THE EVENING...THEN DIMINISHING TO 10 TO 15 KNOTS
AFTER MIDNIGHT...DIMINISHING TO 5 TO 10 KNOTS LATE. PARTLY CLOUDY IN
THE EVENING...THEN CLEARING.
.MONDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY SUNNY.
.MONDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 15 TO
20 KNOTS OVERNIGHT. PARTLY CLOUDY.
.TUESDAY...SOUTHWEST WINDS 15 TO 20 KNOTS...INCREASING TO 20 TO 25
KNOTS WITH GUSTS TO 35 KNOT GALES. PARTLY SUNNY. LIGHT SNOW LIKELY IN
THE AFTERNOON. A GALE WARNING MAY BE NEEDED.
.TUESDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS...BECOMING WEST
10 TO 15 KNOTS BY LATE EVENING...THEN BECOMING NORTHWEST 5 TO
10 KNOTS LATE. MOSTLY CLOUDY WITH LIGHT SNOW LIKELY IN THE EVENING...
THEN PARTLY CLOUDY AFTER MIDNIGHT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING NORTH 5 TO
10 KNOTS BY EVENING. PARTLY SUNNY...BECOMING MOSTLY SUNNY...BECOMING
PARTLY CLOUDY.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY.
.FRIDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY.

WAVES OMITTED DUE TO ICE COVERAGE.

$$

CB

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



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