


Great Lakes Forecast
Issued by NWS
Issued by NWS
453 FZUS63 KDTX 120748 AAA GLFLH Open Lake Forecast for Lake Huron...UPDATED National Weather Service Detroit/Pontiac MI 348 AM EDT Mon May 12 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...High pressure of 30.40 inches slowly exits the Eastern Great Lakes this morning, allowing an extended period of light southeast winds through Wednesday. A large low pressure system lifting into the region will bring periods of showers and isolated thunderstorms Tuesday and Wednesday. LHZ361-362-121600- 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- 348 AM EDT Mon May 12 2025 .TODAY...South winds 5 to 10 knots backing to the east late in the afternoon. Waves 1 to 3 feet. .TONIGHT...East winds 5 to 10 knots. Waves 2 feet or less. .TUESDAY...Southeast winds 5 to 10 knots backing to the east early in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Waves 1 to 3 feet. .WEDNESDAY...East winds 5 to 10 knots. Waves 1 to 3 feet. .THURSDAY...East winds 5 to 10 knots increasing to 10 to 15 knots. A chance of thunderstorms early in the evening. Rain showers likely and a chance of thunderstorms in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet until early morning. .FRIDAY...South winds 10 to 15 knots. A chance of showers. Waves 3 to 5 feet. $$ LHZ363-462>464-121600- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 348 AM EDT Mon May 12 2025 .TODAY...Southeast winds 5 to 10 knots backing to the east late in the afternoon. Waves 2 feet or less. .TONIGHT...East winds 5 to 10 knots veering to the southeast early in the morning. Waves 2 feet or less. .TUESDAY...Southeast winds 5 to 10 knots. A chance of showers in the morning. Waves 2 feet or less. .TUESDAY NIGHT...East winds 5 to 10 knots becoming southeast 10 to 15 knots in the late evening and overnight. Waves 1 to 3 feet. .WEDNESDAY...East winds 5 to 10 knots. Waves 1 to 3 feet. .THURSDAY...Southeast winds 5 to 10 knots increasing to 15 to 20 knots. A chance of thunderstorms early in the evening. Rain showers likely and a chance of thunderstorms in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet until early morning. .FRIDAY...South winds 15 to 20 knots becoming southwest 10 to 15 knots in the late evening and early morning. Showers likely early in the morning...then a chance of showers. Waves 3 to 5 feet. $$ LHZ461-121600- MAFOR 1209/ HURON NORTH 13400 14300 11300. Waves 2 feet or less. HURON SOUTH 12400 15300. Waves 2 feet or less. $$ AA 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)