


Great Lakes Forecast
Issued by NWS
Issued by NWS
630 FZUS63 KDTX 181947 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 347 PM EDT Fri Apr 18 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...Brief period of benign conditions expected through early evening, with showers and thunderstorms filling in overnight ahead of a slow- moving frontal zone. The surface low, 29.50 inches, draws the front south of the Ohio border by Saturday morning resulting in benign marine conditions for the better part of the weekend. LCZ460-190400- Lake St Clair- 347 PM EDT Fri Apr 18 2025 .TONIGHT...Southwest winds 15 to 20 knots. Partly cloudy in the evening...then mostly cloudy with a chance of light showers after midnight. Waves 1 to 3 feet. .SATURDAY...West winds 10 to 15 knots becoming northwest 5 to 10 knots in the afternoon. Mostly cloudy. A chance of light showers in the morning. Waves 2 feet or less. .SATURDAY NIGHT...Northwest winds 5 to 10 knots becoming north 10 to 15 knots in the late evening and early morning...then becoming northeast 5 to 10 knots after midnight. Partly cloudy. Waves 2 feet or less. .SUNDAY...Northeast winds 5 to 10 knots becoming east 10 to 15 knots early in the afternoon. Partly sunny. Waves 2 feet or less. .SUNDAY NIGHT...East winds 10 to 15 knots. Mostly cloudy. A chance of light rain after midnight. Waves 2 feet or less. .MONDAY...Southeast winds 15 to 20 knots veering to the southwest in the afternoon and evening. Light rain...then partly cloudy in the evening. Waves 1 to 3 feet. .TUESDAY...North winds 15 to 20 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...South winds 5 to 10 knots. Mostly clear. 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