Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 281501 RRA
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
957 AM EST TUE FEB 28 2017

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...HIGH PRESSURE OF 30.20 INCHES WILL CONTINUE TO SHIFT
EAST OF THE REGION TODAY. MEANWHILE...LOW PRESSURE WILL DEEPEN TO
29.30 INCHES AS IT TRACKS FROM THE MID MISSOURI VALLEY TODAY TO NEAR
LAKE HURON BY EARLY TUESDAY MORNING. SURFACE TROUGHING WILL PERSIST
ACROSS THE CENTRAL GREAT LAKES WEDNESDAY INTO WEDNESDAY NIGHT IN THE
WAKE OF THE LOW PRESSURE SYSTEM. HIGH PRESSURE WILL THEN BUILD INTO
THE REGION FROM THURSDAY INTO FRIDAY.

LCZ460-282100-
LAKE ST CLAIR-
957 AM EST TUE FEB 28 2017

...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY
EVENING...

.REST OF TODAY...SOUTH WINDS 10 TO 15 KNOTS. CLOUDY. LIGHT SHOWERS
LIKELY LATE IN THE MORNING,...THEN A CHANCE OF LIGHT SHOWERS IN THE
AFTERNOON. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTH WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS AFTER MIDNIGHT. LIGHT SHOWERS AND A CHANCE OF
THUNDERSTORMS. LOCALLY HEAVY RAINFALL POSSIBLE AFTER MIDNIGHT. WAVES
1 TO 3 FEET.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 15 TO
20 KNOTS IN THE AFTERNOON. LIGHT SHOWERS AND A CHANCE OF
THUNDERSTORMS EARLY IN THE MORNING,...THEN A CHANCE OF LIGHT SHOWERS
LATE IN THE MORNING. LIGHT SHOWERS LIKELY IN THE AFTERNOON. WAVES
2 FEET OR LESS.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO
10 TO 15 KNOTS EARLY IN THE MORNING. CLOUDY. LIGHT SHOWERS LIKELY
EARLY IN THE EVENING. LIGHT SNOW SHOWERS LIKELY UNTIL EARLY
MORNING,...THEN A CHANCE OF LIGHT SNOW SHOWERS EARLY IN THE MORNING.
WAVES 1 TO 3 FEET.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KNOTS...DIMINISHING TO 5 TO
10 KNOTS IN THE AFTERNOON AND EVENING. MOSTLY CLOUDY...BECOMING
PARTLY SUNNY IN THE LATE MORNING AND AFTERNOON...BECOMING MOSTLY
CLOUDY. A CHANCE OF LIGHT SNOW IN THE EVENING. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
LIGHT SNOW. WAVES 2 FEET OR LESS.
.SATURDAY...SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.

$$

CB

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC (ALL LOWER CASE)

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



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