


Great Lakes Forecast
Issued by NWS
Issued by NWS
676 FZUS63 KDTX 041356 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 956 AM EDT Fri Apr 4 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...High pressure, 30.40 inches, drifts into Ontario this afternoon and will be replaced by surface low pressure, 29.80 inches, that tracks along a stalled front over the Ohio Valley. Showers and thunderstorms are anticipated overnight across southern Lake Huron and Lake St. Clair. LCZ460-042200- Lake St Clair- 956 AM EDT Fri Apr 4 2025 .REST OF TODAY...Northeast winds 5 to 10 knots. Mostly sunny. Waves 2 feet or less. .TONIGHT...Northeast winds 5 to 10 knots becoming east 10 to 15 knots in the late evening and overnight. Light rain. Waves 2 feet or less. .SATURDAY...East winds 10 to 15 knots backing to the northwest in the late morning and afternoon. Cloudy. Light rain in the morning...then light rain likely in the afternoon. Waves 2 feet or less. .SATURDAY NIGHT...North winds 10 to 15 knots. Mostly cloudy. A chance of light rain. Waves 2 feet or less. .SUNDAY...North winds 10 to 15 knots becoming east 5 to 10 knots in the evening. Mostly cloudy becoming partly sunny in the afternoon becoming mostly cloudy. Waves 2 feet or less. .MONDAY...Northwest winds 15 to 20 knots. Partly cloudy. Light snow likely and a chance of light rain. Waves 2 feet or less. .TUESDAY...Northwest winds 15 to 20 knots. Partly cloudy. Waves 2 feet or less. $$ MV Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes