Great Lakes Forecast
Issued by NWS
Issued by NWS
831 FZUS63 KDTX 281350 GLFSC Lake St Clair Forecast National Weather Service Detroit/Pontiac MI 950 AM EDT Tue Apr 28 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...A low pressure system, 29.30 inches, exits Lake Superior and moves into central Ontario this morning as its expansive low-level wind field migrates across the central Great Lakes. Showers and embedded thunderstorms are expected before the cold front passes through midday. LCZ460-282200- Lake St Clair- 950 AM EDT Tue Apr 28 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... .REST OF TODAY...Southwest winds 15 to 20 knots becoming west 10 to 15 knots late in the afternoon. Partly sunny. Waves 1 to 3 feet. .TONIGHT...West winds 10 to 15 knots becoming northwest 5 to 10 knots in the late evening and overnight. Partly cloudy. Waves 2 feet or less. .WEDNESDAY...Northeast winds 5 to 10 knots becoming north 10 to 15 knots in the late morning and afternoon. Mostly cloudy with a chance of light showers. Waves 2 feet or less. .WEDNESDAY NIGHT...North winds 10 to 15 knots becoming northwest 5 to 10 knots after midnight. Partly cloudy. A chance of light showers early in the evening. Waves 2 feet or less. .THURSDAY...Northwest winds 5 to 10 knots. Mostly sunny in the morning becoming partly cloudy. Waves 2 feet or less. .FRIDAY...North winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. .SATURDAY...Northwest winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less. $$ AM Experimental modernized open lake forecast is available online at weather.gov/dtx/glftablesc Graphical marine forecasts are available at weather.gov/greatlakes