521
FZUS63 KDTX 211333
GLFSC
LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
933 AM EDT FRI SEP 21 2018
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
A LOW PRESSURE SYSTEM AT 29.20 INCHES WILL CONTINUE TO
LIFT INTO ONTARIO THIS MORNING. THE TRAILING COLD FRONT WILL
SWEEP SOUTHEAST ACROSS THE CENTRAL GREAT LAKES THIS AFTERNOON AS
THIS LOW RACES INTO QUEBEC WHILE DEEPENING TO 28.90 INCHES. A
LARGE HIGH PRESSURE SYSTEM AT 30.30 INCHES WILL BUILD INTO THE
AREA THIS WEEKEND.
LCZ460-212015-
LAKE ST CLAIR-
933 AM EDT FRI SEP 21 2018
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
REST OF TODAY
SOUTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30
KNOTS INCREASING TO 20 TO 25 KNOTS WITH GUSTS TO 30 KNOTS EARLY IN
THE AFTERNOON...THEN BECOMING WEST 15 TO 20 KNOTS LATE IN THE
AFTERNOON. PARTLY SUNNY WITH A CHANCE OF LIGHT SHOWERS. WAVES 1 TO 3
FEET.
TONIGHT
NORTHWEST WINDS 15 TO 20 KNOTS WITH GUSTS TO 30 KNOTS.
PARTLY CLOUDY. WAVES 1 TO 3 FEET.
SATURDAY
NORTH WINDS 10 TO 15 KNOTS BECOMING LIGHT AND VARIABLE.
PARTLY SUNNY. WAVES 2 FEET OR LESS.
SATURDAY NIGHT
LIGHT AND VARIABLE WINDS. MOSTLY CLEAR. WAVES 2
FEET OR LESS.
SUNDAY
NORTHEAST WINDS 5 TO 10 KNOTS. MOSTLY SUNNY EARLY IN THE
MORNING BECOMING CLEAR. WAVES 2 FEET OR LESS.
MONDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. A CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 FEET OR LESS.
TUESDAY
WEST WINDS 15 TO 20 KNOTS. MOSTLY CLOUDY WITH SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FEET.
SC
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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