Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 230236
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
936 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 OVERSPREAD LAKE HURON AND LOWER MICHIGAN
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-
936 PM EST SUN FEB 22 2015

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 15 KNOTS...INCREASING TO
15 TO 20 KNOTS...THEN DIMINISHING TO 10 TO 15 KNOTS AFTER MIDNIGHT...
DIMINISHING TO 5 TO 10 KNOTS LATE. MOSTLY CLEAR. SCATTERED FLURRIES
THIS EVENING.
.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.

$$

DG

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



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