Key Facts
• A major eruption occurred at Indonesia’s Mount Lewotobi early on August 2, 2025.
• The eruption was recorded at 2:10 AM Japan time, with ash reaching 19,000 meters high.
• Japan’s Meteorological Agency confirmed no tsunami impact on Japan by 11:30 AM.
• Overseas tide gauge stations reported no significant tidal changes.
• Mount Lewotobi has shown active volcanic activity since last year, with no impact on Japan.
Summary
A significant eruption occurred at Indonesia’s Mount Lewotobi on August 2, 2025, at 2:10 AM Japan time, sending ash plumes up to 19,000 meters. Japan’s Meteorological Agency investigated potential tsunami impacts and confirmed by 11:30 AM that there was no threat to Japan. Tide gauge stations overseas also reported no notable tidal changes. Mount Lewotobi has been actively erupting since last year, but none of these events have affected Japan.
