Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FZUS63 KDTX 181940
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
340 PM EDT SAT APR 18 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...HIGH PRESSURE...AVERAGING 30.30 INCHES...WILL BUILD
EASTWARD ACROSS ONTARIO TONIGHT. LOW PRESSURE OF 29.50 INCHES WILL
DEEPEN TO 29.20 INCHES AS IT LIFTS OVER THE OHIO VALLEY INTO LOWER
MICHIGAN SUNDAY INTO SUNDAY. THIS LOW WILL THEN CONTINUE INTO
ONTARIO ON MONDAY WITH A COLD FRONT SWEEPING EASTWARD ACROSS THE
AREA IN ITS WAKE.

LCZ460-190815-
LAKE ST CLAIR-
340 PM EDT SAT APR 18 2015

.TONIGHT...NORTHEAST WINDS 10 TO 15 KNOTS...BECOMING EAST 15 TO
20 KNOTS LATE. CLEAR. WAVES 2 FEET OR LESS.
.SUNDAY...EAST WINDS 15 TO 20 KNOTS. PARTLY SUNNY THROUGH MID
AFTERNOON...BECOMING CLOUDY. A CHANCE OF LIGHT SHOWERS BY LATE
MORNING. LIGHT SHOWERS LIKELY BY MID AFTERNOON. WAVES 1 TO 3 FEET.
.SUNDAY NIGHT...EAST WINDS 15 TO 20 KNOTS...BECOMING SOUTHEAST 20 TO
25 KNOTS BY MIDNIGHT...THEN BECOMING SOUTH 15 TO 20 KNOTS LATE. LIGHT
SHOWERS. WAVES 1 TO 3 FEET. A SMALL CRAFT ADVISORY MAY BE NEEDED.
.MONDAY...SOUTH WINDS 15 TO 20 KNOTS...BECOMING SOUTHWEST 10 TO
15 KNOTS BY LATE MORNING. MOSTLY CLOUDY WITH LIGHT SHOWERS LIKELY.
WAVES 1 TO 3 FEET.
.MONDAY NIGHT...WEST WINDS 10 TO 15 KNOTS...BECOMING SOUTHWEST 5 TO
10 KNOTS BY MIDNIGHT...THEN INCREASING TO 10 TO 15 KNOTS AFTER
MIDNIGHT. PARTLY CLOUDY WITH A CHANCE OF LIGHT SHOWERS. WAVES 2 FEET
OR LESS.
.TUESDAY...WEST WINDS 15 TO 20 KNOTS...DIMINISHING TO 10 TO 15 KNOTS
THROUGH MIDNIGHT. PARTLY SUNNY WITH A CHANCE OF LIGHT SHOWERS...THEN
PARTLY CLOUDY THROUGH MIDNIGHT. WAVES 1 TO 3 FEET.
.WEDNESDAY...WEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES
2 FEET OR LESS.

$$

DG

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



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.