Great Lakes Forecast
Issued by NWS
Issued by NWS
606 FZUS63 KDTX 120800 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 400 AM EDT Tue May 12 2026 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 departs and washes out across New England this morning which will support southeast flow. Low pressure, 29.70 inches, then enters lower Michigan tonight, bringing stronger winds along with showers and thunderstorms. LCZ460-121600- Lake St Clair- 400 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Mostly sunny in the morning becoming mostly cloudy. Waves 2 feet or less. .TONIGHT...South winds 15 to 25 knots veering to the southwest early in the morning. Mostly cloudy. A chance of light showers early in the evening. Light showers likely by midnight...then a chance of light showers early in the morning. Waves 1 to 3 feet. .WEDNESDAY...West winds 15 to 25 knots. Partly sunny. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet. .THURSDAY...North winds 15 to 20 knots diminishing to 10 to 15 knots in the evening. Partly cloudy then clearing. Waves 1 to 3 feet. .FRIDAY...South winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .SATURDAY...West winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. $$ BT Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes