Volcano Semeru
Java's highest mountain and one of Indonesia's most persistently active volcanoes, puffing out small ash plumes almost daily for decades. In December 2021 a collapse at the summit sent pyroclastic flows down the Besuk Kobokan valley, burying villages and killing more than 50 people.
Last eruption
Erupted since 2000
Summit
Stratovolcano · Andesite / Basaltic Andesite
Activity
0 events (1.0x rate)
Interactive Volcano & Seismicity Map
Seismicity within 50 km radius, active VAAC ash plumes, and tectonic plate boundaries.
Recent seismicity within 50 km
0 events in the last 12 h within 25 km of the crater.
| Time | Magnitude | Epicenter / Place | Distance |
|---|---|---|---|
| 75d ago | M2.8 | JAVA, INDONESIA (BMKG) | 45 km |
| 79d ago | M2.5 | JAVA, INDONESIA (BMKG) | 37 km |
| 81d ago | M2.6 | JAVA, INDONESIA (BMKG) | 12 km |
Geological & Tectonic Profile
StratovolcanoSemeru is an active Stratovolcano formed in an active Subduction zone / Continental crust (> 25 km). Dominant lithology: Andesite / Basaltic Andesite.
Volcano Dossier
VN #263300Official catalogue parameters, coordinates, elevation and geotectonic classification.
Authoritative Monitoring Infrastructure
Java & Sunda Strait
Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for Java & Sunda Strait.
Open Regional HubFrequently Asked Questions (FAQ)
Verified scientific, operational, and emergency protocols
Catalogue: Smithsonian Institution, Global Volcanism Program.Smithsonian GVP profile