509
FZUS63 KDTX 080737
GLFSC
LAKE ST CLAIR FORECAST
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
337 AM EDT TUE SEP 8 2026
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, 30.2 INCHES, WILL RESIDE ACROSS THE
EASTERN GREAT LAKES TODAY. LOW PRESSURE, 29.30 INCHES, WILL TRACK
ACROSS NORTHERN ONTARIO LATE TODAY AND TONIGHT, DRIVING A SLOW
MOVING COLD FRONT ACROSS THE GREAT LAKES REGION TONIGHT INTO
WEDNESDAY. THIS SYSTEM WILL PROVIDE SHOWERS AND FEW THUNDERSTORMS
TO THE LAKES. HIGH PRESSURE WILL EXPAND INTO THE REGION FROM THE
WEST THURSDAY INTO FRIDAY.
LCZ460-081545-
LAKE ST CLAIR-
337 AM EDT TUE SEP 8 2026
TODAY
SOUTHEAST WINDS 5 TO 10 KNOTS INCREASING TO 10 TO 15 KNOTS
LATE IN THE AFTERNOON. PARTLY SUNNY. WAVES 2 FEET OR LESS.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS BECOMING SOUTH 5 TO 10
KNOTS AFTER MIDNIGHT...THEN BECOMING SOUTHWEST 10 TO 15 KNOTS EARLY
IN THE MORNING. MOSTLY CLOUDY THIS EVENING BECOMING PARTLY CLOUDY.
WAVES 2 FEET OR LESS.
WEDNESDAY
SOUTHWEST WINDS 10 TO 15 KNOTS. MOSTLY CLOUDY. A CHANCE
OF LIGHT SHOWERS UNTIL LATE AFTERNOON...THEN LIGHT SHOWERS LIKELY
AND A CHANCE OF THUNDERSTORMS EARLY IN THE AFTERNOON. WAVES 2 FEET
OR LESS.
WEDNESDAY NIGHT
WEST WINDS 10 TO 15 KNOTS DIMINISHING TO 5 TO 10
KNOTS AFTER MIDNIGHT. PARTLY CLOUDY. LIGHT SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS EARLY IN THE EVENING. WAVES 2 FEET OR LESS.
THURSDAY
NORTHWEST WINDS 5 TO 10 KNOTS BECOMING NORTH 10 TO 15
KNOTS IN THE AFTERNOON AND EVENING. MOSTLY CLOUDY BECOMING PARTLY
SUNNY IN THE AFTERNOON BECOMING MOSTLY CLEAR. WAVES 2 FEET OR LESS.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KNOTS. CLEAR. WAVES 2 FEET OR
LESS.
SATURDAY
SOUTHWEST WINDS 10 TO 15 KNOTS. PARTLY CLOUDY. WAVES 2
FEET OR LESS.
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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