000
FZUS63 KDTX 211936
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
335 PM EDT TUE MAY 21 2013

.SYNOPSIS...A LARGE LOW PRESSURE SYSTEM...AVERAGING 29.40
INCHES...WILL CONTINUE TO STALL OVER THE NORTHERN PLAINS BRINGING
SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS THROUGH WEDNESDAY. THIS
LOW WILL PASS THROUGH THE SOUTHERN GREAT LAKES ON
THURSDAY...ALLOWING HIGH PRESSURE TO BUILD BACK IN FROM THE NORTH ON
FRIDAY.

LCZ460-220800-
LAKE ST CLAIR-
335 PM EDT TUE MAY 21 2013

.TONIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH MIDNIGHT...THEN SHOWERS AND THUNDERSTORMS
LIKELY AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY AFTERNOON. MOSTLY CLOUDY WITH SHOWERS AND THUNDERSTORMS
LIKELY. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 10 KNOTS. A CHANCE OF SHOWERS.
MOSTLY CLOUDY THROUGH MIDNIGHT...BECOMING PARTLY CLOUDY OVERNIGHT.
WAVES 2 FEET OR LESS.
.THURSDAY...WEST WINDS 5 TO 10 KNOTS...BECOMING NORTH 10 TO 15 KNOTS
BY MID AFTERNOON. MOSTLY CLOUDY WITH A CHANCE OF LIGHT SHOWERS.
WAVES 2 FEET OR LESS.
.THURSDAY NIGHT...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES
1 TO 3 FEET.
.FRIDAY...NORTH WINDS 10 TO 15 KNOTS...BECOMING LIGHT AND VARIABLE.
MOSTLY CLEAR. WAVES 2 FEET OR LESS.
.SATURDAY...LIGHT AND VARIABLE WINDS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.SUNDAY...EAST WINDS 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.

$$

MR

WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE HIGHEST
1/3 OF THE WAVE SPECTRUM. MAXIMUM WAVE HEIGHT IS THE HIGHEST 1/20
WAVE HEIGHT.

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