Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 231940
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 PM EDT SUN AUG 23 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...29.40 INCHES...WILL MOVE ACROSS NORTHERN
ONTARIO THIS EVENING...BECOMING CENTERED NORTH OF LAKE SUPERIOR BY
MONDAY. THIS SYSTEM WILL DRIVE A STRONG COLD FRONT...29.70 INCHES
ACROSS LAKES HURON AND ERIE THIS EVENING. THE LOW WILL SLOWLY WORK
ITS WAY INTO NORTHERN QUEBEC BY WEDNESDAY WHILE GRADUALLY WEAKENING.

LCZ460-240815-
LAKE ST CLAIR-
340 PM EDT SUN AUG 23 2015

.TONIGHT...SOUTH WINDS 10 TO 15 KNOTS...VEERING TO THE WEST BY
MIDNIGHT...THEN DIMINISHING TO 5 TO 10 KNOTS LATE. PERIODS OF
SHOWERS AND NUMEROUS THUNDERSTORMS EARLY THIS EVENING...THEN MOSTLY
CLEAR BY MIDNIGHT. WAVES 2 FEET OR LESS.
.MONDAY...WEST WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO 20 KNOTS
BY LATE MORNING. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.MONDAY NIGHT...WEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.TUESDAY...WEST WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO 10 KNOTS
LATE. PARTLY SUNNY. A CHANCE OF WATERSPOUTS. A CHANCE OF LIGHT
SHOWERS BY LATE MORNING. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A
CHANCE OF WATERSPOUTS. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTHWEST WINDS 5 TO 10 KNOTS. A CHANCE OF WATERSPOUTS.
MOSTLY CLOUDY THROUGH EARLY AFTERNOON...THEN A CHANCE OF LIGHT
SHOWERS BY MID AFTERNOON. PARTLY CLOUDY THROUGH MIDNIGHT. WAVES
2 FEET OR LESS.
.THURSDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
2 FEET OR LESS.
.FRIDAY...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

SF/SC

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


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