


Great Lakes Forecast
Issued by NWS
Issued by NWS
545 FZUS63 KDTX 171942 GLFLH Open Lake Forecast for Lake Huron National Weather Service Detroit/Pontiac MI 342 PM EDT Tue Jun 17 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...A low pressure system lifting across eastern Ontario has draped a warm sector over the central Great Lakes. A few showers and thunderstorms are possible late today and into the overnight hours. A stronger low lifts into the region Wednesday providing several rounds of thunderstorms, some of which may be severe. Active pattern could continue through the end of the week as the system`s cold front stalls across the Great Lakes Thursday followed by another weak low heading into the weekend. LHZ361-362-180345- 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- 342 PM EDT Tue Jun 17 2025 .TONIGHT...North winds 5 to 10 knots in the evening becoming light and variable. Waves 1 to 3 feet. .WEDNESDAY...Light and variable winds becoming east 5 to 10 knots late in the afternoon. Showers likely in the afternoon. Waves 2 feet or less. .WEDNESDAY NIGHT...Northeast winds 5 to 10 knots becoming north 10 to 15 knots in the late evening and overnight. Showers and a chance of thunderstorms in the evening...then showers likely after midnight. Some thunderstorms may produce heavy rainfall in the evening. Waves 2 feet or less. .THURSDAY...Northwest winds 15 to 20 knots decreasing to 10 to 15 knots in the late morning and afternoon. A chance of showers. Waves 2 to 4 feet. .THURSDAY NIGHT...West winds 5 to 10 knots backing to the south after midnight. A chance of showers after midnight. Waves 1 to 3 feet. .FRIDAY...South winds 5 to 10 knots backing to the southeast late in the afternoon...then becoming south 10 to 15 knots late in the evening. A chance of thunderstorms late in the morning. A chance of showers. Waves 2 feet or less. .SATURDAY...South winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and early afternoon...then decreasing to 10 to 15 knots early in the evening decreasing to 5 to 10 knots in the late evening and early morning. Showers likely early in the morning. A chance of thunderstorms until early evening. A chance of showers early in the evening. Waves 2 to 4 feet. .SUNDAY...South winds 10 to 15 knots. Waves 1 to 3 feet building to 2 to 4 feet. $$ LHZ363-462>464-180345- Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore- Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore- Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore- Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore- 342 PM EDT Tue Jun 17 2025 .TONIGHT...Southeast winds 10 to 15 knots until early morning becoming light and variable. Waves 1 to 3 feet. .WEDNESDAY...Light and variable winds becoming northeast 5 to 10 knots late in the afternoon. A chance of showers in the morning...then showers likely and a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Waves 2 feet or less. .WEDNESDAY NIGHT...Northeast winds 10 to 15 knots becoming north 15 to 20 knots after midnight. Showers and a chance of thunderstorms in the evening...then a chance of showers after midnight. Some thunderstorms may produce heavy rainfall in the evening. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .THURSDAY...West winds 15 to 20 knots becoming northwest 10 to 15 knots in the late morning and afternoon. A chance of showers. Waves 2 to 4 feet. .THURSDAY NIGHT...Northwest winds 5 to 10 knots backing to the southwest in the late evening and overnight. Waves 1 to 3 feet. .FRIDAY...South winds 5 to 10 knots increasing to 10 to 15 knots late in the evening. A chance of thunderstorms. A chance of showers late in the afternoon. Waves 1 to 3 feet. .SATURDAY...South winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and early afternoon...then decreasing to 10 to 15 knots until early morning. A chance of showers early in the morning. A chance of thunderstorms. Waves 2 to 4 feet. .SUNDAY...South winds 10 to 15 knots. Waves 1 to 3 feet building to 2 to 4 feet. $$ LHZ461-180345- MAFOR 1721/ HURON NORTH 11500 14700 11600 12300. A chance of showers this evening and Wednesday afternoon. Waves 1 to 3 feet tonight. Waves 2 feet or less Wednesday. HURON SOUTH 11410 11600 11800 14100 11106. Waves 2 feet or less. $$ KGK 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)