Great Lakes Forecast
Issued by NWS
Issued by NWS
696 FZUS63 KDTX 242054 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 354 PM EST Mon Nov 24 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...Weak low pressure tracks into the Great Lakes on Tuesday with occasional rain and lighter winds. A stronger low pressure system arriving from the Midwest then rapidly deepens over the northern Great Lakes Wednesday into Wednesday night, leading to a long duration of gales through early Friday. Much cooler air arrives with snow squalls becoming likely Thursday into Friday. LCZ460-250500- Lake St Clair- 354 PM EST Mon Nov 24 2025 ...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...South winds 10 to 15 knots diminishing to 5 to 10 knots early in the morning. Cloudy. A chance of light rain after midnight. Waves 2 feet or less. .TUESDAY...Southeast winds 5 to 10 knots. Light rain until late afternoon...then light rain likely late in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 5 to 10 knots increasing to 15 to 20 knots after midnight. Cloudy with light rain likely. Waves 2 feet or less. .WEDNESDAY...Southwest winds 20 to 25 knots increasing to 35 knot gales with gusts to 40 knot gales. Mostly cloudy. Light rain likely early in the morning...then a chance of light rain in the late morning and afternoon. A chance of light snow early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. A Gale Warning may be needed. .WEDNESDAY NIGHT...West at 35 knot gales with gusts to 40 knot gales. Mostly cloudy. Light snow likely until early morning. A chance of light snow after midnight. Waves 4 to 6 feet. Waves occasionally around 7 feet. .THURSDAY...West at 35 knot gales diminishing to 30 knots in the afternoon...then increasing to 35 knot gales in the evening. Mostly cloudy with a chance of light snow. Waves 4 to 6 feet. Waves occasionally around 8 feet. .FRIDAY...West at 35 knot gales. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .SATURDAY...South winds 10 to 15 knots. Partly cloudy. A chance of light snow. Waves 2 feet or less. $$ TF Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes