Great Lakes Forecast
Issued by NWS
Issued by NWS
667 FZUS63 KDTX 291449 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 949 AM EST Mon Dec 29 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, 28.90 inches, tracks across northern Lake Huron early this morning. Widespread strong gales with storm force gusts, snow squalls, and freezing spray are all expected Monday. The next clipper in a persistent northwest flow pattern arrives late Tuesday. LCZ460-292300- Lake St Clair- 949 AM EST Mon Dec 29 2025 ...GALE WARNING IN EFFECT THROUGH TUESDAY MORNING... .REST OF TODAY...Southwest at 35 knot gales becoming west to 30 knots in the afternoon. Gusts to 45 knot gales. Light snow showers in the late morning and early afternoon...then scattered light snow showers late in the afternoon. Waves 4 to 6 feet. Waves occasionally around 8 feet. .TONIGHT...Northwest at 35 knot gales with gusts to 40 knot gales diminishing to 30 knots with gusts to 35 knot gales after midnight. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TUESDAY...West winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots early in the afternoon. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TUESDAY NIGHT...West winds 15 to 20 knots. Light snow ...then a chance of light snow after midnight. Waves 1 to 3 feet. .WEDNESDAY...West winds 15 to 20 knots. Mostly cloudy with a chance of light snow in the morning...then partly cloudy with light snow likely in the afternoon and evening. Waves 1 to 3 feet. .THURSDAY...West winds 15 to 20 knots. Partly cloudy. Waves 1 to 3 feet. .FRIDAY...West winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet. Wave heights are for ice free areas. $$ MV Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes