Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 221514
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1014 AM 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.

LCZ460-222115-
LAKE ST CLAIR-
1014 AM EST SUN FEB 22 2015

.REST OF TODAY...WEST WINDS 5 TO 10 KNOTS...BECOMING NORTHWEST 10 TO
15 KNOTS BY AFTERNOON. MOSTLY CLOUDY WITH A CHANCE OF LIGHT SNOW
SHOWERS.
.TONIGHT...NORTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 5 TO
10 KNOTS OVERNIGHT. MOSTLY CLOUDY EARLY IN THE EVENING...THEN
CLEARING.
.MONDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY SUNNY.
.MONDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY LATE EVENING. PARTLY CLOUDY EARLY IN THE EVENING...
BECOMING MOSTLY CLOUDY OVERNIGHT.
.TUESDAY...SOUTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS...
DIMINISHING TO 10 TO 15 KNOTS BY EVENING. MOSTLY CLOUDY. LIGHT SNOW
LIKELY IN THE AFTERNOON. A SMALL CRAFT ADVISORY MAY BE NEEDED.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY.
.THURSDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR.

WAVES OMITTED DUE TO ICE COVERAGE.

$$

CB

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



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