Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 231355
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
937 AM EDT SUN APR 23 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...AVERAGING 30.20 INCHES...WILL CONTINUE
TO HOLD OVER SOUTHERN GREAT LAKES REGION INTO NEXT WEEK. AN AREA OF
LOW PRESSURE...AVERAGING 29.80 INCHES...OVER HUDSON BAY WILL SEND A
WEAKENING COLD FRONT THROUGH THE CENTRAL GREAT LAKES TODAY AND
TONIGHT WITH HIGH PRESSURE BEHIND IT ONCE AGAIN.

LCZ460-232000-
LAKE ST CLAIR-
937 AM EDT SUN APR 23 2017

.REST OF TODAY...LIGHT AND VARIABLE WINDS BECOMING SOUTHEAST 5 TO 10
KNOTS IN THE AFTERNOON. SUNNY. WAVES 2 FEET OR LESS.
.TONIGHT...SOUTHEAST WINDS 5 TO 10 KNOTS BACKING TO THE NORTHEAST IN
THE LATE EVENING AND OVERNIGHT. CLEAR. WAVES 2 FEET OR LESS.
.MONDAY...EAST WINDS 5 TO 10 KNOTS. SUNNY. WAVES 2 FEET OR LESS.
.MONDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO
10 KNOTS EARLY IN THE MORNING. PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.TUESDAY...SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15
KNOTS IN THE EVENING. MOSTLY CLOUDY EARLY IN THE MORNING BECOMING
PARTLY CLOUDY. WAVES 2 FEET OR LESS.
.WEDNESDAY...SOUTH WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2 FEET
OR LESS.
.THURSDAY...WEST WINDS 15 TO 20 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FEET.

$$

HLO

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

GRAPHICAL MARINE FORECASTS ARE AVAILABLE AT WEATHER.GOV/GREATLAKES



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