


Great Lakes Forecast
Issued by NWS
Issued by NWS
279 FZUS63 KDTX 231334 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 934 AM EDT Sat Aug 23 2025 For waters beyond five nautical miles off shore on Lake Huron 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 cold front brings showers and a few thunderstorms to the region today and tonight. A cooler airmass then settles over the Great Lakes to close out the weekend, with some lake effect rain showers and the potential for a few waterspouts, mainly Monday and Tuesday. LHZ361-362-232145- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- 934 AM EDT Sat Aug 23 2025 .REST OF TODAY...Southwest winds 10 to 15 knots. A chance of showers in the afternoon. Waves 2 to 4 feet. .TONIGHT...West winds 10 to 15 knots. A chance of waterspouts in the evening. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots. A chance of showers in the morning...then showers likely and a chance of thunderstorms in the afternoon. A chance of waterspouts. Waves 2 to 4 feet. .SUNDAY NIGHT...West winds 10 to 15 knots becoming northwest 15 to 20 knots in the late evening and overnight. A chance of waterspouts in the evening. A chance of showers. Waves 3 to 5 feet. .MONDAY...West winds 15 to 20 knots becoming northwest 20 to 25 knots late in the morning...then decreasing to 15 to 20 knots late in the evening. Gusts to 35 knot gales. A chance of waterspouts in the morning. A chance of showers. Waves 6 to 9 feet. Waves occasionally around 12 feet. .TUESDAY...Northwest winds 15 to 20 knots with gusts to around 30 knots decreasing to 10 to 15 knots in the late evening and early morning. Waves 4 to 6 feet. .WEDNESDAY...West winds 10 to 15 knots backing to the southwest until early morning. Waves 2 to 4 feet. Waves occasionally around 8 feet. $$ LHZ363-232145- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 934 AM EDT Sat Aug 23 2025 .REST OF TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots early in the afternoon...then decreasing to 10 to 15 knots late in the afternoon. A chance of showers late in the morning...then a chance of showers and thunderstorms in the afternoon. A chance of waterspouts. Waves 2 to 4 feet. .TONIGHT...Southwest winds 10 to 15 knots veering to the northwest in the late evening and early morning...then decreasing to 5 to 10 knots early in the morning. A chance of showers and thunderstorms in the evening. A chance of waterspouts in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the evening...then building to 2 to 4 feet after midnight. .SUNDAY...West winds 5 to 10 knots becoming southwest 10 to 15 knots in the late morning and afternoon. Showers likely in the afternoon. A chance of waterspouts in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...West winds 10 to 15 knots becoming northwest 15 to 20 knots after midnight. A chance of waterspouts in the evening. A chance of showers. Waves 1 to 3 feet building to 3 to 5 feet in the late evening and overnight. .MONDAY...Northwest winds 15 to 20 knots increasing to 20 to 25 knots with gusts to around 30 knots late in the morning...then decreasing to 15 to 20 knots with gusts to around 30 knots late in the evening. A chance of showers. Waves 6 to 9 feet. Waves occasionally around 12 feet. .TUESDAY...Northwest winds 15 to 20 knots decreasing to 10 to 15 knots in the late evening and early morning. Waves 5 to 7 feet. Waves occasionally around 10 feet. .WEDNESDAY...West winds 10 to 15 knots backing to the southwest until early morning. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the evening...then building to 2 to 4 feet in the late evening and early morning. $$ LHZ462>464-232145- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 934 AM EDT Sat Aug 23 2025 .REST OF TODAY...Southwest winds 10 to 15 knots. A chance of showers and thunderstorms in the afternoon. A chance of waterspouts in the afternoon. Waves 1 to 3 feet. .TONIGHT...Southwest winds 10 to 15 knots veering to the west after midnight...then decreasing to 5 to 10 knots early in the morning. A chance of showers and thunderstorms in the evening. A chance of waterspouts in the evening. Waves 1 to 3 feet. .SUNDAY...West winds 5 to 10 knots. A chance of showers in the afternoon. A chance of waterspouts in the afternoon. Waves 1 to 3 feet. .SUNDAY NIGHT...West winds 10 to 15 knots. A chance of waterspouts in the evening. A chance of showers. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .MONDAY...Northwest winds 15 to 20 knots. Gusts to 30 knots late in the morning. A chance of showers. Waves 6 to 9 feet. Waves occasionally around 12 feet. .TUESDAY...Northwest winds 15 to 20 knots decreasing to 10 to 15 knots until early morning. Waves 4 to 6 feet. .WEDNESDAY...Northwest winds 10 to 15 knots becoming southwest 5 to 10 knots early in the evening...then becoming west 10 to 15 knots in the late evening and early morning. Waves 3 to 5 feet subsiding to 1 to 3 feet until early morning. Waves occasionally around 8 feet. $$ LHZ461-232145- MAFOR 2315/ HURON NORTH 12510 11610 13710 12610. A chance of showers and thunderstorms this afternoon. A chance of showers this evening and Sunday morning. Waves 2 to 4 feet. HURON SOUTH 13510 11710 13700 11600. A chance of waterspouts this afternoon and evening. A chance of showers late this morning then a chance of showers and thunderstorms this afternoon. A chance of showers and thunderstorms this evening. Waves 1 to 3 feet. $$ JA Experimental modernized open lake forecast is available online at weather.gov/dtx/glftable (all lower case) Graphical marine forecasts are available online at weather.gov/greatlakes (all lower case)