000
FZUS63 KDTX 201336
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
923 AM EDT MON MAY 20 2013

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

LCZ460-202000-
LAKE ST CLAIR-
923 AM EDT MON MAY 20 2013

.REST OF TODAY...SOUTHEAST WINDS 5 TO 10 KNOTS...BECOMING SOUTH
10 TO 15 KNOTS BY AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS BY LATE MORNING...THEN A CHANCE OF SHOWERS AND
THUNDERSTORMS BY MID AFTERNOON. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...BECOMING
LIGHT AND VARIABLE OVERNIGHT. PARTLY CLOUDY WITH SHOWERS AND
THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTH WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO 15 KNOTS
BY MID AFTERNOON. SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS...DIMINISHING TO
5 TO 10 KNOTS AFTER MIDNIGHT. PARTLY CLOUDY WITH A CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH
SHOWERS AND THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.THURSDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY WITH A CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
.FRIDAY...NORTHEAST 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)