Great Lakes Forecast
Issued by NWS

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000
FZUS63 KDTX 220744
GLFSC

LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
344 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-
344 AM EDT WED MAR 22 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...NORTH WINDS 15 TO 20 KNOTS DIMINISHING TO 5 TO 10 KNOTS.
MOSTLY SUNNY. WAVES 2 FEET OR LESS.
.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.

$$

DRC

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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