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

000
FZUS63 KDTX 270749
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
349 AM EDT THU APR 27 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...LOW PRESSURE OF 29.30 INCHES WILL TRACK ACROSS NORTHERN LAKE
MICHIGAN AND THE U.P. DURING THE LATE MORNING AND AFTERNOON. WEAK
HIGH PRESSURE WILL BUILD INTO LOWER MICHIGAN TONIGHT BEFORE SURFACE
HIGH PRESSURE STRENGTHENS OVER THE NORTHERN GREAT LAKES FOR THIS
WEEKEND. OVER THE SOUTHERN GREAT LAKES...A FRONTAL BOUNDARY WILL
ORGANIZED BRINGING PERIODS OF SHOWERS AND THUNDERSTORMS LATE
SATURDAY THROUGH MONDAY.

LCZ460-272015-
LAKE ST CLAIR-
349 AM EDT THU APR 27 2017

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SOUTH WINDS 10 TO 15 KNOTS INCREASING TO 15 TO 20 KNOTS IN
THE LATE MORNING AND AFTERNOON. GUSTS TO 25 KNOTS. PARTLY SUNNY.
LIGHT SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
WAVES 1 TO 3 FEET.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KNOTS BECOMING WEST 5 TO 10
KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KNOTS BECOMING SOUTH 10 TO 15
KNOTS IN THE LATE MORNING AND AFTERNOON. PARTLY SUNNY. WAVES 2 FEET
OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY WITH A
CHANCE OF LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.SATURDAY...NORTH WINDS 10 TO 15 KNOTS. CLOUDY WITH A CHANCE OF
LIGHT SHOWERS. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. CLOUDY WITH SHOWERS
LIKELY. WAVES 2 FEET OR LESS.
.MONDAY...SOUTHWEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY WITH SHOWERS
LIKELY. WAVES 1 TO 3 FEET.

$$

DRK

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.