


Great Lakes Forecast
Issued by NWS
Issued by NWS
506 FZUS63 KDTX 100156 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 956 PM EDT Wed Apr 9 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 lifts northeast across New England tonight. Low pressure, 29.90 inches, is then forecast to track across the northern Ohio Valley and the Eastern Great Lakes region tonight into Thursday. High pressure builds back in Friday into the weekend. LCZ460-101000- Lake St Clair- 956 PM EDT Wed Apr 9 2025 .REST OF TONIGHT...Southeast winds 10 to 15 knots. A chance of light rain and snow this evening...then light snow with light rain likely after midnight. Waves 2 feet or less. .THURSDAY...East winds 10 to 15 knots becoming northeast 5 to 10 knots late in the afternoon. Cloudy. Light rain and snow likely in the morning...then light rain likely in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...North winds 10 to 15 knots. Mostly cloudy. Waves 2 feet or less. .FRIDAY...North winds 10 to 15 knots. Partly sunny. Waves 1 to 3 feet. .FRIDAY NIGHT...North winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .SATURDAY...North winds 10 to 15 knots diminishing to 5 to 10 knots in the afternoon and evening. Partly cloudy then clearing. Waves 2 feet or less. .SUNDAY...Southeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .MONDAY...Southwest winds 10 to 15 knots. Mostly cloudy with a chance of light rain. Waves 2 feet or less. $$ MR Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes