Great Lakes Forecast
Issued by NWS

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744
FZUS63 KDTX 221343
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
943 AM EDT WED MAR 22 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...NEAR 30.70 INCHES...OVER FAR WESTERN
ONTARIO WILL CONTINUE TO BUILD SOUTHEAST OVER THE GREAT LAKES REGION
TODAY. THE HIGH WILL GRADUALLY WEAKEN TO...30.60 INCHES...AS IT
BUILDS INTO THE MID ATLANTIC REGION. A SLOW MOVING LOW PRESSURE
SYSTEM WILL THEN DEVELOP OVER THE CENTRAL PLAINS BEFORE TRACKING
INTO THE MID MISSISSIPPI RIVER VALLEY FOR THE WEEKEND AT 29.60
INCHES.

LCZ460-222015-
LAKE ST CLAIR-
943 AM EDT WED MAR 22 2017

.REST OF TODAY...NORTH WINDS 10 TO 15 KNOTS WITH GUSTS TO 20 KNOTS
DIMINISHING TO 5 TO 15 KNOTS LATE IN THE AFTERNOON. MOSTLY SUNNY.
WAVES 1 TO 2 FEET.
.TONIGHT...NORTHEAST WINDS 5 TO 10 KNOTS THIS EVENING BECOMING LIGHT
AND VARIABLE. CLEAR. WAVES 2 FEET OR LESS.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15
KNOTS IN THE AFTERNOON. MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 10 KNOTS. MOSTLY CLOUDY. A CHANCE
OF LIGHT RAIN AND SNOW IN THE EVENING...THEN LIGHT RAIN LIKELY AFTER
MIDNIGHT. WAVES 2 FEET OR LESS.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KNOTS. CLOUDY. LIGHT RAIN LIKELY
EARLY IN THE MORNING...THEN A CHANCE OF LIGHT RAIN IN THE LATE
MORNING AND EARLY AFTERNOON. A CHANCE OF LIGHT RAIN IN THE EVENING.
WAVES 2 FEET OR LESS.
.SATURDAY...EAST WINDS 10 TO 15 KNOTS. RAIN. WAVES 2 FEET OR LESS.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KNOTS. RAIN. 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



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