Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 251401
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1001 AM 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 WEAK SURFACE TROUGH OF 29.70 INCHES WILL LIFT INTO THE
WESTERN GREAT LAKES TODAY...BEFORE LIFTING INTO QUEBEC ON TUESDAY.
ANOTHER WEAK SURFACE TROUGH...29.80 INCHES...WILL DIVE INTO LOWER
MICHIGAN TUESDAY NIGHT. SURFACE RIDGING AT 30.10 INCHES WILL EXPAND
INTO THE GREAT LAKES REGION BY WEDNESDAY NIGHT.

LCZ460-252015-
LAKE ST CLAIR-
1001 AM EDT MON MAY 25 2015

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.REST OF TODAY...SOUTHWEST WINDS 15 TO 20 KNOTS. GUSTS TO 30 KNOTS
BY MID AFTERNOON. CLOUDY. A CHANCE OF LIGHT SHOWERS BY MID
AFTERNOON. WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS...BECOMING SOUTH 5 TO
10 KNOTS BY MIDNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO 15 KNOTS
BY LATE MORNING. MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. 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...DIMINISHING TO 5 TO
10 KNOTS THROUGH MIDNIGHT. PARTLY SUNNY THROUGH EARLY AFTERNOON...
THEN A CHANCE OF SHOWERS AND THUNDERSTORMS BY MID AFTERNOON. PARTLY
CLOUDY THROUGH MIDNIGHT. WAVES 2 FEET OR LESS.
.THURSDAY...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. 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.

$$

DG

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



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