What kind of volcano is Lewotobi?

Lewotobi is classified as a Stratovolcano in Indonesia. Its tectonic setting is Subduction zone / Crustal thickness unknown.

How is seismicity near Lewotobi monitored here?

Earthquakes within 50 km of the crater are aggregated from 18 seismic networks and checked against a swarm rule that compares the current rate with this volcano's own 30-day background. Ash advisories come from the VAAC centres that are connected.

Twin volcanic cones of Lewotobi in eastern Flores

Photo:Joël Boyervia Smithsonian GVP

Volcano Dossier•GVP #264180

8.54°S, 122.78°E

Erupted since 2000

Indonesia→

Volcano Lewotobi

Twin 'husband and wife' volcanoes on Flores: Lewotobi Laki-laki and Lewotobi Perempuan. Laki-laki entered a violent phase in late 2024, when a night-time eruption in November killed at least nine people in nearby villages; in 2025 its explosions sent ash over 10 km high and repeatedly disrupted flights to Bali.

Last eruption

2026

Erupted since 2000

Summit

1.7 km

Stratovolcano · Andesite / Basaltic Andesite

Activity

Normal Baseline

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	Depth
18d ago	M3.9	FLORES REGION, INDONESIA (BMKG)	44 km	85 km
35d ago	M4.0	FLORES REGION, INDONESIA (BMKG)	47 km	133 km
54d ago	M3.1	FLORES REGION, INDONESIA (BMKG)	3.9 km	130 km
80d ago	M2.5	FLORES REGION, INDONESIA (BMKG)	47 km	63 km
82d ago	M2.8	FLORES REGION, INDONESIA (BMKG)	18 km	118 km
87d ago	M2.9	FLORES REGION, INDONESIA (BMKG)	44 km	56 km

Geological & Tectonic Profile

Stratovolcano

Lewotobi is an active Stratovolcano formed in an active Subduction zone / Crustal thickness unknown. Dominant lithology: Andesite / Basaltic Andesite.

Edifice TypeStratovolcano

Major rockAndesite / Basaltic Andesite

TectonicsSubduction zone

Volcanic ArcSunda Volcanic Arc

Volcano Dossier

VN #264180

Official catalogue parameters, coordinates, elevation and geotectonic classification.

CountryIndonesia

Crater Coordinates-8.542°, 122.775°

Summit1.7 km

SubregionSunda Volcanic Arc

Catalog SourceSmithsonian GVP (#264180)

Authoritative Monitoring Infrastructure

All 18 Networks & VAAC →

Seismic ObservatoryBMKG / PVMBG

Badan Meteorologi, Klimatologi, dan Geofisika / PVMBG

Official Portal

ICAO Aviation Ash Center

Darwin VAAC (Bureau of Meteorology)

Darwin, Australia

VAAC Advisory Desk

Swarm telemetry correlated across 18 networks against a 30-day baseline.Read Science & Physics →

Regional Seismic Profile

Flores Island & Banda Arc

Explore live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for Flores Island & Banda Arc.

Open Regional Hub

Frequently Asked Questions (FAQ)

Verified scientific, operational, and emergency protocols

The most recent eruption of Lewotobi recorded by the Smithsonian Global Volcanism Program was in 2026.

Catalogue: Smithsonian Institution, Global Volcanism Program.Smithsonian GVP profile