Great Lakes Forecast
Issued by NWS
Issued by NWS
664 FZUS63 KDTX 181439 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 939 AM EST Tue Nov 18 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...Low pressure, 29.90 inches, will track across the Ohio Valley today while high pressure of 30.20 inches holds across the northern Great Lakes. This high will sustain dry conditions and light winds across Lake Huron. The high will expand south across Lower Michigan on Wednesday and drift east of the region by Thursday. Deepening low pressure over northern Ontario Thursday will drive a weak cold front across the region Thursday night. LHZ361-362-182300- 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- 939 AM EST Tue Nov 18 2025 .REST OF TODAY...North winds 5 to 10 knots late in the morning becoming light and variable. Waves 1 to 3 feet. .TONIGHT...Northwest winds 5 to 10 knots. Waves 2 feet or less. .WEDNESDAY...West winds 5 to 10 knots early in the morning becoming light and variable. Waves 2 feet or less. .WEDNESDAY NIGHT...Light and variable winds becoming southwest 5 to 10 knots in the late evening and overnight. Waves 2 feet or less. .THURSDAY...South winds 5 to 10 knots becoming southwest 15 to 20 knots. A chance of rain late in the morning. Rain likely late in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet. .FRIDAY...West winds 15 to 20 knots becoming northwest 10 to 15 knots in the late evening and early morning. Waves 4 to 6 feet. Waves occasionally around 8 feet. .SATURDAY...West winds 5 to 10 knots becoming southwest 10 to 15 knots in the late evening and early morning. Waves 1 to 3 feet. $$ LHZ363-462>464-182300- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 939 AM EST Tue Nov 18 2025 .REST OF TODAY...West winds 5 to 10 knots late in the morning becoming light and variable. Waves 1 to 3 feet. .TONIGHT...Light and variable winds becoming north 5 to 10 knots in the late evening and overnight. Waves 2 feet or less. .WEDNESDAY...North winds 5 to 10 knots early in the morning becoming light and variable. Waves 2 feet or less. .WEDNESDAY NIGHT...Light and variable winds becoming south 5 to 10 knots after midnight. Waves 2 feet or less. .THURSDAY...Southwest winds 5 to 10 knots increasing to 15 to 20 knots. A chance of rain. Waves 2 feet or less building to 3 to 5 feet. .FRIDAY...West winds 15 to 20 knots decreasing to 10 to 15 knots until early morning. Waves 3 to 5 feet. .SATURDAY...West winds 5 to 10 knots backing to the southwest early in the evening...then increasing to 10 to 15 knots in the late evening and early morning. Waves 1 to 3 feet. $$ LHZ461-182300- MAFOR 1816/ HURON NORTH 11800 14700 12800 11700. Waves 2 feet or less. HURON SOUTH 12700 15800. Waves 2 feet or less. $$ 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)