8 active Isle Royale alerts
- ClosureRock Harbor Lighthouse tower closedMentions Rock Harbor Lighthouse, referenced in this guideThe Rock Harbor Lighthouse tower is closed to visitors because stairwell damage, including rotting stairs, makes it unsafe for public use. - Restoration work is being planned for 2026–2027.Official details
- ClosureSeasonal park closure begins November 1Isle Royale closes to public use November 1–April 15 because extreme winter weather threatens visitor safety; the closure extends 4.5 miles into Lake Superior from the island.Official details























