Great Lakes Forecast
Issued by NWS

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FZUS63 KDTX 201950
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
350 PM EDT MON APR 20 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 OF 29.10 INCHES WILL LIFT STRAIGHT
NORTHWARD TO JAMES BAY TONIGHT. THE LOW WILL THEN STALL OUT AND
SLOWLY WEAKEN THROUGH MIDWEEK. THE NEXT COLD FRONT IS EXPECTED TO
SLIDE THROUGH THE CENTRAL GREAT LAKES LATE WEDNESDAY MORNING.

LCZ460-210815-
LAKE ST CLAIR-
350 PM EDT MON APR 20 2015

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

.TONIGHT...SOUTHWEST WINDS 25 TO 30 KNOTS...DIMINISHING TO 15 TO
20 KNOTS AFTER 8 PM...DIMINISHING TO 10 TO 15 KNOTS AFTER
MIDNIGHT...THEN INCREASING TO 15 TO 20 KNOTS LATE. MOSTLY CLOUDY.
SCATTERED LIGHT SHOWERS LATE. WAVES 1 TO 3 FEET.
.TUESDAY...SOUTHWEST WINDS 15 TO 20 KNOTS...INCREASING TO 20 TO
25 KNOTS WITH GUSTS TO 30 KNOTS BY MID AFTERNOON. CLOUDY WITH A
CHANCE OF LIGHT SHOWERS. WAVES 1 TO 3 FEET.
.TUESDAY NIGHT...WEST WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST
15 TO 20 KNOTS AFTER MIDNIGHT. MOSTLY CLOUDY THROUGH MIDNIGHT...
BECOMING PARTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.WEDNESDAY...WEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY. A CHANCE OF
LIGHT SHOWERS BY MID AFTERNOON. WAVES 1 TO 3 FEET.
.WEDNESDAY NIGHT...WEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO
15 KNOTS BY MIDNIGHT. MOSTLY CLOUDY THROUGH MIDNIGHT...BECOMING
PARTLY CLOUDY OVERNIGHT. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY...BECOMING
PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.FRIDAY...NORTH WINDS 10 TO 15 KNOTS. MOSTLY CLEAR. WAVES 2 FEET OR
LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.

$$

CB

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



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