Great Lakes Forecast
Issued by NWS
Issued by NWS
192 FZUS63 KDTX 271440 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 940 AM EST Thu Nov 27 2025 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...Low pressure, 29.30 inches, begins to depart for northeastern Ontario today setting up northwesterly flow in its wake. Despite departure, influence of the system maintains strong winds and lake effect snow showers through today into early Friday. High pressure, 30.40 inches, then gradually expands across the region Friday into Saturday. Another low, 29.60 inches, is forecast to lift across the southern Great Lakes from the Midwest Saturday night and Sunday, bringing widespread snow with a chance for gusty winds in the wake of the system Sunday night. LCZ460-272245- Lake St Clair- 940 AM EST Thu Nov 27 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...West winds to 30 knots diminishing to 20 to 25 knots in the afternoon. Gusts to 35 knot gales. Mostly cloudy with scattered light snow showers. Waves 2 to 4 feet. .TONIGHT...West winds to 30 knots diminishing to 20 to 25 knots after midnight. Gusts to 35 knot gales. Mostly cloudy with scattered light snow showers in the evening...then partly cloudy after midnight. Waves 2 to 4 feet. .FRIDAY...West winds to 30 knots diminishing to 15 to 20 knots. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the afternoon. .FRIDAY NIGHT...West winds 20 to 25 knots diminishing to 10 to 15 knots. Mostly clear. Waves 1 to 3 feet. .SATURDAY...Southwest winds 5 to 10 knots backing to the south in the afternoon...then becoming southeast 15 to 20 knots in the evening. Partly sunny in the morning. A chance of light snow in the afternoon. Snow in the evening. Snow may be heavy at times in the evening. Waves 2 feet or less. .SUNDAY...West winds 20 to 25 knots. Light rain and snow. Waves 2 to 4 feet. .MONDAY...Southwest winds 20 to 25 knots. Partly cloudy. Waves 2 feet or less. $$ DRK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes