Great Lakes Forecast
Issued by NWS
Issued by NWS
730 FZUS63 KDTX 300723 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 323 AM EDT Thu Jul 30 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, 30.30 inches, governs Great Lakes conditions today and Friday. Low pressure then tracks into the Ohio Valley this weekend, with local pressure averaging around 29.90 inches in its wake. This brings rain and isolated thunderstorm chances to the Great Lakes Friday night and Saturday. LHZ361-301530- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt beyond 5 NM off shore- 323 AM EDT Thu Jul 30 2026 .TODAY...Light and variable winds. Waves 2 feet or less. .TONIGHT...Light and variable winds becoming southwest 5 to 10 knots after midnight. Waves 2 feet or less. .FRIDAY...Southwest winds 5 to 10 knots. A chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .FRIDAY NIGHT...West winds 5 to 10 knots. A chance of showers. Waves 2 feet or less. .SATURDAY...Northwest winds 5 to 10 knots in the morning becoming light and variable...then becoming north 5 to 10 knots late in the evening. A chance of showers. Waves 2 feet or less. .SUNDAY...North winds 10 to 15 knots becoming northeast 5 to 10 knots in the late morning and early afternoon...then becoming light and variable . Waves 2 feet or less. .MONDAY...Light and variable winds becoming southeast 5 to 10 knots by midnight. Waves 2 feet or less. $$ LHZ362-363-301530- Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM off shore- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- 323 AM EDT Thu Jul 30 2026 .TODAY...Light and variable winds. Waves 2 feet or less. .TONIGHT...Light and variable winds becoming east 5 to 10 knots late in the evening...then veering to the south after midnight. Waves 2 feet or less. .FRIDAY...South winds 5 to 10 knots. Waves 2 feet or less. .FRIDAY NIGHT...South winds 5 to 10 knots early in the evening becoming light and variable. A chance of showers in the evening... then showers likely after midnight. Waves 2 feet or less. .SATURDAY...Light and variable winds becoming northeast 5 to 10 knots late in the evening. Showers likely in the morning. A chance of showers late in the morning...then a chance of showers late in the evening. Waves 2 feet or less. .SUNDAY...North winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and early afternoon...then decreasing to 5 to 10 knots . Waves 1 to 3 feet. .MONDAY...Light and variable winds becoming east 5 to 10 knots by midnight. Waves 2 feet or less. $$ LHZ462>464-301530- 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- 323 AM EDT Thu Jul 30 2026 .TODAY...North winds 5 to 10 knots in the morning becoming light and variable. Waves 2 feet or less. .TONIGHT...Light and variable winds becoming south 5 to 10 knots early in the morning. Waves 2 feet or less. .FRIDAY...South winds 5 to 10 knots early in the morning becoming light and variable...then becoming south 5 to 10 knots early in the afternoon. Waves 2 feet or less. .FRIDAY NIGHT...Light and variable winds. A chance of showers and thunderstorms in the evening...then showers likely and a chance of thunderstorms after midnight. Waves 2 feet or less. .SATURDAY...North winds 5 to 10 knots. A chance of showers. Waves 2 feet or less. .SUNDAY...North winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and early afternoon...then increasing to 15 to 20 knots early in the evening decreasing to 5 to 10 knots by midnight. Waves 1 to 3 feet building to 3 to 5 feet . .MONDAY...Northeast winds 5 to 10 knots. Waves 1 to 3 feet. $$ LHZ461-301530- MAFOR 3009/ HURON NORTH 11800 11100 11300 14400 11500. Waves 2 feet or less. HURON SOUTH 14800 11200 11300 12400. Waves 2 feet or less. $$ MV 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)