Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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
000
FZUS63 KDTX 291944
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
344 PM EDT SAT APR 29 2017

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...30.40 INCHES...OVER THE NORTHERN GREAT
LAKES WILL MOVE EASTWARD TONIGHT AS A FRONTAL BOUNDARY LIFTS INTO
THE NORTHERN OHIO VALLEY. LOW PRESSURE MOVING THROUGH THE PLAINS
SATURDAY NIGHT AND SUNDAY WILL STRENGTHEN AS IT PUSHES THE FRONT
NORTHWARD THROUGH THE CENTRAL GREAT LAKES. THE LOW...29.20
INCHES...WILL THEN LIFT ACROSS THE WESTERN AND NORTHERN GREAT LAKES
MONDAY AND MONDAY NIGHT.

LCZ460-300815-
LAKE ST CLAIR-
344 PM EDT SAT APR 29 2017

.TONIGHT...NORTHEAST WINDS 15 TO 20 KNOTS DIMINISHING TO 10 TO 15
KNOTS EARLY IN THE MORNING. CLOUDY WITH NUMEROUS LIGHT SHOWERS AND A
CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.
.SUNDAY...EAST WINDS 10 TO 15 KNOTS BECOMING SOUTHEAST 5 TO 10 KNOTS
LATE IN THE AFTERNOON. CLOUDY WITH NUMEROUS SHOWERS AND A CHANCE OF
THUNDERSTORMS. WAVES 2 FEET OR LESS.
.SUNDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS. PERIODS OF SHOWERS
AND THUNDERSTORMS LIKELY. WAVES 2 FEET OR LESS.
.MONDAY...SOUTH WINDS 10 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS
WITH GUSTS TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON.
THUNDERSTORMS LIKELY IN THE MORNING. PERIODS OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FEET. A SMALL CRAFT
ADVISORY MAY BE NEEDED.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 20 KNOTS. GUSTS TO 30 KNOTS
EARLY IN THE EVENING. MOSTLY CLOUDY WITH SCATTERED LIGHT SHOWERS.
WAVES 1 TO 3 FEET.
.TUESDAY...SOUTHWEST WINDS 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS
BECOMING WEST 15 TO 20 KNOTS IN THE EVENING. MOSTLY CLOUDY. A CHANCE
OF LIGHT SHOWERS UNTIL LATE AFTERNOON. WAVES 1 TO 3 FEET.
.WEDNESDAY...EAST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.THURSDAY...NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS. WAVES 2 FEET OR LESS.

$$

SF

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/DTX/GLFTABLESC

GRAPHICAL MARINE FORECASTS ARE AVAILABLE AT WEATHER.GOV/GREATLAKES



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