Mount Lewotobi Laki-laki, located in East Nusa Tenggara, showed another increase in volcanic activity on Monday night, July 13, 2026. An official report from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application recorded that the eruption occurred at 20:55 WITA.
Visual observations showed a thick grey ash column rising approximately 300 meters from the crater peak, or about 1,884 meters above sea level. The volcanic ash was observed moving towards the west and northwest. Based on seismograph data, this eruption was recorded with a maximum amplitude of 14.8 millimeters and lasted for 136 seconds.
In response to this situation, authorities have kept the activity level of Mount Lewotobi Laki-laki at Level III or Alert. Local residents and tourists are urged not to approach or conduct any activities within a 5-kilometer radius of the eruption center for safety reasons.
Seismic data gathered from 12:00 to 18:00 WITA indicated a series of intense seismic activities, including three eruption earthquakes and seven non-harmonic tremors. It is recorded that over the past week, the volcano has erupted eight times.
As additional information, up to July 2026, the total number of volcanic eruptions across Indonesia has reached 3,159 events. Mount Lewotobi Laki-laki itself has been recorded to have erupted 394 times since the beginning of the year, making it one of the most active volcanoes in Indonesia after Mount Semeru.
