Great Lakes Forecast
Issued by NWS
Issued by NWS
479 FZUS63 KDTX 292041 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 341 PM 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...Center of the low pressure system, 28.90 inches, has lifted away from the Great Lakes this afternoon and is now positioned over western Quebec. Widespread strong gales with storm force gusts, snow squalls, and freezing spray are all expected today into tonight. The next clipper in a persistent northwest flow pattern arrives late Tuesday. LCZ460-300445- Lake St Clair- 341 PM EST Mon Dec 29 2025 ...GALE WARNING IN EFFECT THROUGH TUESDAY MORNING... .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 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 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Mostly cloudy. A chance of light snow early in the morning...then light snow likely in the late morning and afternoon. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots becoming west 10 to 15 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .FRIDAY...West winds 10 to 15 knots. Mostly cloudy. Waves 2 feet or less. .SATURDAY...West winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. Wave heights are for ice free areas. $$ DRK Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes