Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 180756
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
356 AM EDT MON MAY 18 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 WILL TRACK ACROSS THE NORTHERN GREAT LAKES
TODAY AND EARLY TONIGHT...WEAKENING TO 29.80 INCHES. THE PASSAGE OF
THIS SYSTEM TO OUR NORTH WILL SEND A COLD FRONT ACROSS THE CENTRAL
GREAT LAKES THIS EVENING. SURFACE HIGH PRESSURE WILL THEN BUILD INTO
THE REGION TUESDAY INTO WEDNESDAY.

LCZ460-182015-
LAKE ST CLAIR-
356 AM EDT MON MAY 18 2015

.TODAY...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY LATE MORNING. PARTLY SUNNY. PATCHY FOG. A CHANCE OF
SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY MIDNIGHT...THEN VEERING TO THE NORTHWEST AFTER MIDNIGHT.
PATCHY FOG EARLY IN THE EVENING. PARTLY CLOUDY WITH A CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING...THEN MOSTLY CLEAR
BY MIDNIGHT. WAVES 2 FEET OR LESS.
.TUESDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY. WAVES 2 FEET OR
LESS.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS...INCREASING TO
15 TO 20 KNOTS BY MIDNIGHT...THEN DIMINISHING TO 10 TO 15 KNOTS
LATE. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.WEDNESDAY...NORTH WINDS 10 TO 15 KNOTS THROUGH EARLY AFTERNOON...
BECOMING LIGHT AND VARIABLE...THEN BECOMING SOUTHWEST 5 TO 10 KNOTS
THROUGH MIDNIGHT. MOSTLY SUNNY THROUGH MID AFTERNOON...BECOMING
PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET
OR LESS.

$$

HLO

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


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