Mount Lewotobi Laki-Laki on Flores Island, Indonesia, erupted on June 17, 2025, with a volcanic ash column reaching 11,000 meters, causing major air travel disruptions across the region. The ongoing Indonesian volcano eruption activity forced cancellations of over 37 international and domestic flights, especially affecting routes to and from Bali.
Indonesia’s Geological Agency raised the alert to Level 4, expanding the exclusion zone to 8 km. Residents were advised to evacuate and wear masks due to ashfall. Flood warnings issued as volcanic material mixed with heavy rainfall posed mudslide risks.
Villages including Boru, Hewa, and Watobuku reported ash rain. Evacuations were carried out in Nurabelen, with relocation to safer areas like Nileknoheng. No casualties were confirmed.
This marks the third major Indonesia volcano eruption event from Mount Lewotobi Laki-Laki in 2025. Earlier, on May 18, ash clouds rose to 9,000 meters, triggering a red aviation alert. On March 20–21, ash reached 8,200 meters, prompting evacuation of 4,700 people and declaration of a 14-day emergency.
Indonesia has over 130 active volcanoes. Mount Lewotobi Laki-Laki, located on the Pacific Ring of Fire, remains at Level 4 alert. Ongoing tremors signal potential future eruptions. Travelers are advised to check flight updates and follow safety guidance. Ashfall and lahar risks remain high. Local authorities continue to coordinate relief and evacuation efforts.
