Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 220153
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
947 PM EDT MON APR 21 2014

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...AVERAGING 29.90 INCHES...MOVE ACROSS
LOWER MICHIGAN THIS EVENING...DEEPENING TO 29.60 INCHES. THE LOW
WILL DEEPEN FURTHER AS IT APPROACHES NEW ENGLAND TUESDAY. MEANWHILE
HIGH PRESSURE...AVERAGING 30.10 INCHES...WILL BUILD INTO THE GREAT
LAKES FROM THE WEST TUESDAY BECOMING CENTERED OVER LAKE HURON ON
WEDNESDAY. THE HIGH HOLD OVER THE REGION UNTIL THE NEXT LOW PRESSURE
SYSTEM MOVES IN AT THE END OF THE WEEK.

LCZ460-220800-
LAKE ST CLAIR-
947 PM EDT MON APR 21 2014

.REST OF TONIGHT...SOUTHWEST WINDS 5 TO 10 KNOTS...VEERING TO THE
NORTHWEST LATE. LIGHT SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS.
WAVES 2 FEET OR LESS.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KNOTS...INCREASING TO 15 TO
20 KNOTS IN THE AFTERNOON...THEN DIMINISHING TO 10 TO 15 KNOTS LATE.
PARTLY SUNNY WITH A SLIGHT CHANCE OF LIGHT SHOWERS. WAVES 2 FEET OR
LESS.
.TUESDAY NIGHT...NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY
THROUGH MIDNIGHT...BECOMING MOSTLY CLEAR OVERNIGHT. WAVES 2 FEET OR
LESS.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KNOTS...BECOMING NORTH 5 TO
10 KNOTS BY MID AFTERNOON. SUNNY. WAVES 2 FEET OR LESS.
.WEDNESDAY NIGHT...NORTHEAST WINDS 5 TO 10 KNOTS THROUGH MIDNIGHT...
BECOMING LIGHT AND VARIABLE OVERNIGHT. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KNOTS...INCREASING TO 10 TO
15 KNOTS BY MID AFTERNOON. LIGHT SHOWERS LIKELY BY MID AFTERNOON.
PARTLY SUNNY THROUGH EARLY AFTERNOON...BECOMING MOSTLY CLOUDY. WAVES
2 FEET OR LESS.
.FRIDAY...WEST WINDS 15 TO 20 KNOTS. LIGHT SHOWERS LIKELY. PARTLY
CLOUDY. WAVES 1 TO 3 FEET.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.

$$

MR

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






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