Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 260147
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
947 PM EDT MON MAY 25 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...A SURFACE TROUGH OF 29.70 INCHES WILL LIFT NORTH OF THE
AREA THROUGH TONIGHT AND ON INTO QUEBEC TUESDAY. ANOTHER SURFACE OF
29.80 INCHES WILL THEN MOVE INTO LOWER MICHIGAN TUESDAY NIGHT WITH A
RIDGE OF HIGH PRESSURE AT 30.10 INCHES THEN BUILDING INTO THE AREA
FROM WEDNESDAY INTO WEDNESDAY NIGHT.

LCZ460-260815-
LAKE ST CLAIR-
947 PM EDT MON MAY 25 2015

.REST OF TONIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS...DIMINISHING TO
5 TO 10 KNOTS OVERNIGHT. PARTLY CLOUDY...BECOMING MOSTLY CLOUDY
OVERNIGHT. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KNOTS...BECOMING SOUTH 10 TO
15 KNOTS BY LATE MORNING. MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS BY EARLY AFTERNOON. SHOWERS AND THUNDERSTORMS LIKELY
LATE. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 20 KNOTS...BECOMING SOUTHWEST 20
TO 25 KNOTS BY MIDNIGHT...THEN DIMINISHING TO 10 TO 15 KNOTS AFTER
MIDNIGHT. MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY THROUGH
MIDNIGHT...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
WAVES 1 TO 3 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
.WEDNESDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY SUNNY WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...
BECOMING LIGHT AND VARIABLE OVERNIGHT. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.THURSDAY...LIGHT AND VARIABLE WINDS. PARTLY CLOUDY EARLY...THEN
CLEARING. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

SC

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



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