Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 211402
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1001 AM EDT SUN MAY 21 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...A LOW PRESSURE SYSTEM...AVERAGING 29.70 INCHES...OVER
THE MIDWEST WILL LIFT INTO THE NORTHERN GREAT LAKES TODAY. THIS LOW
WILL LIFT SLOWLY NORTHEASTWARD EARLY IN THE WEEK WITH A SECOND LOW
THEN DEVELOPING OVER LAKE MICHIGAN ON TUESDAY.

LCZ460-212000-
LAKE ST CLAIR-
1001 AM EDT SUN MAY 21 2017

.REST OF TODAY...SOUTH WINDS 10 TO 15 KNOTS. CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS LATE IN THE MORNING...THEN SHOWERS LIKELY
AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 2 FEET OR
LESS.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST 5 TO 10
KNOTS IN THE LATE EVENING AND EARLY MORNING...THEN INCREASING TO 10
TO 15 KNOTS EARLY IN THE MORNING. MOSTLY CLOUDY THIS EVENING
BECOMING PARTLY CLOUDY. SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO
10 KNOTS LATE IN THE EVENING...THEN INCREASING TO 10 TO 15 KNOTS
AFTER MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY SUNNY BECOMING MOSTLY
CLOUDY EARLY IN THE AFTERNOON BECOMING PARTLY SUNNY BECOMING MOSTLY
CLOUDY IN THE EVENING. A CHANCE OF UNTIL LATE AFTERNOON. A CHANCE OF
LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF SHOWERS. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE
OF SHOWERS. WAVES 2 FEET OR LESS.

$$

HLO

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC

GRAPHICAL MARINE FORECASTS ARE AVAILABLE AT WEATHER.GOV/GREATLAKES


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