Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 252000
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
400 PM EDT THU JUN 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...LOW PRESSURE...29.80 INCHES...WILL EXIT THE SOUTHERN
GREAT LAKES TONIGHT. AS THE LOW MOVES EASTWARD...IT WILL ALLOW HIGH
PRESSURE TO BUILD BACK OVER ALL MARINE AREAS DURING FRIDAY. THIS
WILL HOLD UNTIL A STRONGER LOW ARRIVES IN THE OHIO VALLEY SATURDAY
AT 29.50 INCHES. THIS SYSTEM WILL BRING INCREASED NORTHEAST WIND AND
AND ACTIVE RAIN PATTERN OVER THE SOUTH HALF OF LAKE HURON AND LOWER
MICHIGAN FOR MUCH OF THE WEEKEND.

LCZ460-260815-
LAKE ST CLAIR-
400 PM EDT THU JUN 25 2015

.TONIGHT...LIGHT AND VARIABLE WINDS...BECOMING NORTH 5 TO 10 KNOTS
BY MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY MID AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR LESS.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS AFTER MIDNIGHT. CLOUDY. A CHANCE OF RAIN THROUGH MIDNIGHT...
THEN RAIN LIKELY AFTER MIDNIGHT. WAVES 2 FEET OR LESS.
.SATURDAY...NORTHEAST WINDS 15 TO 20 KNOTS. RAIN LIKELY AND A CHANCE
OF THUNDERSTORMS THROUGH EARLY AFTERNOON...THEN RAIN AND A CHANCE OF
THUNDERSTORMS BY MID AFTERNOON. WAVES 1 TO 3 FEET...BUILDING TO 2 TO
4 FEET BY MID AFTERNOON.
.SATURDAY NIGHT...NORTH WINDS 20 TO 25 KNOTS...DIMINISHING TO 15 TO
20 KNOTS LATE. RAIN THROUGH MIDNIGHT...THEN RAIN LIKELY AFTER
MIDNIGHT. WAVES 2 TO 4 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING WEST 5 TO
10 KNOTS THROUGH MIDNIGHT. PARTLY SUNNY WITH A CHANCE OF SHOWERS...
THEN PARTLY CLOUDY THROUGH MIDNIGHT. WAVES 2 FEET OR LESS.
.MONDAY...SOUTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.TUESDAY...NORTHWEST WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.

$$

BT

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


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