


Great Lakes Forecast
Issued by NWS
Issued by NWS
413 FZUS63 KDTX 071936 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 336 PM EDT Mon Apr 7 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, 29.70 inches, exiting east of Georgian Bay late this afternoon with gale force wind gusts behind it. Winds will slowly diminish tonight and tomorrow as high pressure expands into the region from the west late Tuesday. Low pressure is then forecast to track across the Ohio Valley Wednesday night into Thursday. LCZ460-080345- Lake St Clair- 336 PM EDT Mon Apr 7 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...Northwest winds 15 to 20 knots with gusts to 30 knots increasing to 20 to 25 knots with gusts to 30 knots in the late evening and early morning...then diminishing to 15 to 20 knots early in the morning. Partly cloudy. Waves 1 to 3 feet. .TUESDAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the afternoon. Partly sunny. Waves 1 to 3 feet. .TUESDAY NIGHT...Northwest winds 5 to 10 knots. Partly cloudy in the evening then clearing. Waves 2 feet or less. .WEDNESDAY...Southwest winds 5 to 10 knots. Partly sunny. A chance of light rain in the afternoon. Waves 2 feet or less. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Mostly cloudy. A chance of light rain in the evening...then light rain after midnight. Waves 2 feet or less. .THURSDAY...East winds 10 to 15 knots backing to the north in the evening. Mostly cloudy with a chance of light rain. Waves 2 feet or less. .FRIDAY...North winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .SATURDAY...North winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ SF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes