Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 200758
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
357 AM EDT MON OCT 20 2014

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...SOUTHERLY WIND WILL INCREASE AHEAD OF THE NEXT LOW
PRESSURE SYSTEM OF 29.70 INCHES AS IT MOVES TOWARD THE STRAITS FROM
NORTHWEST ONTARIO. THIS LOW AND ASSOCIATED COLD FRONT WILL TRACK
THROUGH LAKE HURON AND LOWER MICHIGAN THROUGH TONIGHT.  THIS WILL
BRING STRONG NORTHWEST WINDS...SHIFTING NORTHEAST INTO TUESDAY. HIGH
PRESSURE WILL THEN BUILD INTO THE REGION TUESDAY NIGHT AND LAST
THROUGH MID WEEK.

LCZ460-202000-
LAKE ST CLAIR-
357 AM EDT MON OCT 20 2014

.TODAY...SOUTHWEST WINDS 10 TO 15 KNOTS...BECOMING WEST 5 TO
10 KNOTS LATE. A CHANCE OF LIGHT SHOWERS EARLY...THEN LIGHT SHOWERS
LIKELY BY LATE MORNING. CLOUDY. WAVES 2 FEET OR LESS.
.TONIGHT...NORTHWEST WINDS 10 TO 15 KNOTS. CLOUDY WITH A CHANCE OF
LIGHT SHOWERS. WAVES NEARLY CALM.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING NORTH 15 TO
20 KNOTS BY LATE MORNING. LIGHT SHOWERS LIKELY THROUGH EARLY
AFTERNOON...THEN A CHANCE OF LIGHT SHOWERS BY MID AFTERNOON. CLOUDY.
WAVES NEARLY CALM.
.TUESDAY NIGHT...NORTH WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY THROUGH MIDNIGHT...BECOMING
PARTLY CLOUDY OVERNIGHT. WAVES NEARLY CALM.
.WEDNESDAY...NORTH WINDS 10 TO 15 KNOTS. PARTLY SUNNY...BECOMING
MOSTLY SUNNY BY MID AFTERNOON...BECOMING CLEAR. WAVES NEARLY CALM.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES
NEARLY CALM.
.FRIDAY...WEST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES NEARLY CALM.

$$

MR

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





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