Great Lakes Forecast
Issued by NWS
Issued by NWS
172 FZUS63 KDTX 220721 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 321 AM EDT Sun Sep 22 2024 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...A weak low pressure system, 29.80 inches, moves into northern Ohio River Valley into Lake Erie this evening through tomorrow morning. This will bring occasional rain with embedded thunderstorms, and will also push in a cold front across the Great Lakes starting late tonight, which will flip wind direction from SSE to NNW/NNE. A second low pressure system, 29.70 inches, will move through the southern Great Lakes Tuesday into Wednesday morning, bringing another round of active weather. LCZ460-221530- Lake St Clair- 321 AM EDT Sun Sep 22 2024 .TODAY...Light and variable winds becoming southeast 5 to 10 knots in the late morning and afternoon. Partly sunny. Patchy fog in the morning. A chance of. Waves 2 feet or less. .TONIGHT...Southeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Showers. Waves 2 feet or less. .MONDAY...South winds 10 to 15 knots veering to the northwest in the late morning and early afternoon...then diminishing to 5 to 10 knots early in the afternoon. Mostly cloudy. Waves 2 feet or less. .MONDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Mostly cloudy. A chance of light showers after midnight. Waves 2 feet or less. .TUESDAY...Northeast winds 5 to 10 knots veering to the southeast in the afternoon and evening. Mostly cloudy. A chance of light showers in the morning...then showers likely and a chance of thunderstorms in the afternoon and evening. Waves 2 feet or less. .WEDNESDAY...Northwest winds 5 to 10 knots. Partly cloudy. A chance of showers and thunderstorms. Waves 2 feet or less. .THURSDAY...Northeast winds 10 to 15 knots. Partly cloudy. 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