FZUS63 KDTX 191846 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 246 PM EDT Tue May 19 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...A cold front sweeps across the region this evening, veering winds from southwest to northwest. Strong to severe thunderstorms will be possible ahead of this cold front. High pressure, 30.50 inches, then builds in mid-week. LHZ361-200300- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- 246 PM EDT Tue May 19 2026 .TONIGHT...Northwest winds 15 to 20 knots increasing to 20 to 25 knots early in the morning. Scattered showers in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. .WEDNESDAY...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 5 to 7 feet. Waves occasionally around 10 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots becoming north 5 to 10 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...Northeast winds 5 to 10 knots veering to the east in the late morning and 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 2 feet or less building to 5 to 7 feet. Waves occasionally around 10 feet. .SATURDAY...East winds to 30 knots with gusts to 35 knot gales decreasing to 15 to 20 knots. A chance of showers. Waves 6 to 9 feet subsiding to 3 to 5 feet by midnight. Waves occasionally around 12 feet. .SUNDAY...East winds 10 to 15 knots becoming southeast 5 to 10 knots in the late morning and early afternoon...then becoming north 10 to 15 knots early in the evening becoming west 5 to 10 knots by midnight. A chance of showers early in the morning. Waves 1 to 3 feet. $$ LHZ362-363-462-200300- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- 246 PM EDT Tue May 19 2026 .TONIGHT...Southwest winds 15 to 20 knots veering to the northwest in the late evening and overnight. Waves 5 to 7 feet. Waves occasionally around 10 feet. .WEDNESDAY...Northwest winds 15 to 20 knots veering to the north late in the afternoon. Waves 6 to 9 feet. Waves occasionally around 12 feet. .WEDNESDAY NIGHT...North winds 15 to 20 knots decreasing to 10 to 15 knots in the late evening and overnight. Waves 3 to 5 feet. .THURSDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots in the late morning and afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .THURSDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 to 3 feet. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots late in the afternoon. A chance of showers late in the afternoon. Waves 1 to 3 feet building to 4 to 6 feet late in the afternoon. Waves occasionally around 8 feet. .SATURDAY...East winds 20 to 25 knots with gusts to around 30 knots becoming southeast 10 to 15 knots. Showers likely early in the morning...then a chance of showers . Waves 4 to 6 feet. .SUNDAY...Southeast winds 5 to 10 knots. A chance of showers early in the morning. Waves 1 to 3 feet. Waves occasionally around 8 feet. $$ LHZ463-464-200300- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 246 PM EDT Tue May 19 2026 ...SEVERE THUNDERSTORM WATCH 230 IN EFFECT UNTIL 7 PM EDT THIS EVENING... .TONIGHT...Southwest winds 10 to 15 knots. A chance of showers and scattered thunderstorms in the evening...then a chance of showers after midnight. Some thunderstorms may be severe with damaging winds and large hail. Waves 3 to 5 feet. .WEDNESDAY...North winds 10 to 15 knots. Waves 4 to 6 feet. Waves occasionally around 8 feet. .WEDNESDAY NIGHT...North winds 10 to 15 knots. Waves 3 to 5 feet. .THURSDAY...North winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .THURSDAY NIGHT...North winds 10 to 15 knots veering to the 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 20 to 25 knots. A chance of showers late in the morning. Rain showers likely late in the evening. Waves 2 to 4 feet building to 4 to 6 feet late in the afternoon. Waves occasionally around 8 feet. .SATURDAY...East winds 20 to 25 knots decreasing to 10 to 15 knots. Showers likely early in the morning...then a chance of showers . Waves 3 to 5 feet subsiding to 1 to 3 feet by midnight. .SUNDAY...Southeast winds 5 to 10 knots becoming light and variable. A chance of showers until afternoon. Waves 2 feet or less. $$ LHZ461-200300- MAFOR 1921/ HURON NORTH 11626 14730 11730 12720. Waves 3 to 5 feet building to 5 to 7 feet. Occasional wave height around 10 feet tonight. Waves 5 to 7 feet. Occasional wave height around 10 feet Wednesday. HURON SOUTH 11520 19526 11620 11720 12710 12720 11820. Waves 3 to 5 feet tonight. Waves 4 to 6 feet. Occasional wave height around 8 feet Wednesday. $$ AM 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)