FZUS63 KDTX 200743 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 343 AM EDT Wed May 20 2026 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...High pressure, 30.40 inches, will start to build in over the Great Lakes this morning then slowly move east across the region through Friday morning. As this occurs, northwest flow will veer to the northeast and persist into Friday. LHZ361-201600- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- 343 AM EDT Wed May 20 2026 .TODAY...Northwest winds 20 to 25 knots with gusts to around 30 knots decreasing to 15 to 20 knots in the late morning and afternoon. Waves 4 to 6 feet. .TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to 15 knots by midnight...then decreasing to 5 to 10 knots early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally around 8 feet. .THURSDAY...East winds 5 to 10 knots veering to the southeast early in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...East winds 5 to 10 knots early in the evening becoming light and variable...then becoming east 5 to 10 knots after midnight. Waves 2 feet or less. .FRIDAY...East winds 5 to 10 knots increasing to 20 to 25 knots with gusts to around 30 knots. A chance of showers late in the evening. Waves 1 to 3 feet building to 6 to 9 feet. Waves occasionally around 12 feet. .SATURDAY...East winds to 30 knots with gusts to 35 knot gales decreasing to 15 to 20 knots by midnight. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet. .SUNDAY...East winds 10 to 15 knots becoming southeast 5 to 10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LHZ362-363-201600- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 343 AM EDT Wed May 20 2026 .TODAY...Northwest winds 15 to 20 knots veering to the north late in the afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet. .TONIGHT...North winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots decreasing to 5 to 10 knots in the late morning and afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .THURSDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 to 3 feet. .FRIDAY...East winds 10 to 15 knots becoming northeast 15 to 20 knots late in the afternoon. A chance of showers late in the evening. Waves 1 to 3 feet building to 5 to 7 feet. Waves occasionally around 10 feet. .SATURDAY...East winds 20 to 25 knots with gusts to around 30 knots decreasing to 10 to 15 knots. Showers likely early in the morning...then a chance of showers. Waves 8 to 12 feet. Waves occasionally around 15 feet. .SUNDAY...Southeast winds 10 to 15 knots becoming light and variable. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LHZ462>464-201600- 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- 343 AM EDT Wed May 20 2026 .TODAY...North winds 10 to 15 knots. Waves 3 to 5 feet. .TONIGHT...North winds 10 to 15 knots. Waves 3 to 5 feet. .THURSDAY...Northeast winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and early afternoon...then building to 2 to 4 feet early in the afternoon. .THURSDAY NIGHT...North winds 10 to 15 knots veering tothe east after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots with gusts to around 30 knots late in the afternoon. A chance of showers late in the afternoon. Rain showers likely late in the evening. Waves 3 to 5 feet building to 5 to 7 feet late in the evening. Waves occasionally around 10 feet. .SATURDAY...East winds 20 to 25 knots with gusts to around 30 knots becoming southeast 10 to 15 knots. Showers likely early in the morning. Rain showers in the late morning and early afternoon...then a chance of showers early in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. .SUNDAY...Southeast winds 5 to 10 knots backing to the east by midnight. Waves 1 to 3 feet. $$ LHZ461-201600- MAFOR 2009/ HURON NORTH 15720 11710 11100. Waves 4 to 6 feet subsiding to 3 to 5 feet. Occasional wave height around 8 feet today. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight. HURON SOUTH 12710 11820 11810 11820 13810. Waves 3 to 5 feet today. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight. $$ TF 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)