Overall Orange Volcanic eruption for Lewotobi
in Indonesia

Event summary

ORANGE alert: The Lewotobi Volcanic eruption is unlikely to require external humanitarian assistance based on the exposed population and coping capacity.

GDACS ID VO 1000108
Name: Lewotobi (264180)
Glide number: VO-2025-000040-IDN
Lat/Lon: -8.54 , 122.78
Event Date: 24 Mar 2025 UTC
Exposed Population 30km: About 84000 people within 30km
Exposed Population 100km: About 740000 people within 100km
Max Volc. Explosivity Index VEI: 3
Population Exposure Index PEI: 4
Inserted at: 24 Mar 2025 10:26 UTC

GDACS Score

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Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Indonesia - Volcanic activity (ECHO 19 Feb 2025)Fri, 14 Feb 2025 10:23

  • The Lewotobi Laki-laki volcano, in East Flores regency, East Nusa Tenggara province, has increased its activity since 13 February with ash plumes reaching 1,500 m above the summit of the crater and intense seismic activity.
  • According to the National Agency for Disaster Countermeasure (BNPB), an evacuation order has been issued on 13 February for residents of the six villages in the disaster-prone area of East Flores regency. 
  • On the same day, the volcano's alert level  was raised from level 3 to level 4, all activities within a radius of 6 km from the crater are forbidden, people have to avoid the southwest-northeast sector up to 7 km distance from the crater.
  • Local authorities are monitoring the ongoing activity.
Indonesia - Volcanic activity, update (ECHO 22 Feb 2025)Mon, 17 Feb 2025 11:23

  • The number of people affected by the eruption of the Lewotobi Laki-laki volcano, in East Flores regency, East Nusa Tenggara province, which occurred on 12 February and was characterized by an ash plume of approximately 1,500 m above the summit of the crater, has increased.
  • According to the ASEAN Disaster Information Network (ADINet) reports, as of 17 February, at least 5,230 people have been affected, and people who live in six villages in the disaster-prone area of East Flores regency have been evacuated. In addition, the villages of Dulipali, Padang Pasir, Nobo, Klatanlo, Hokeng Jaya, Boru, and Nawakote are being monitored for potential lahar risk.
  • The volcano's alert level remains at level 4, with all activities within a radius of 6 km from the crater are forbidden, people have to avoid the southwest-northeast sector up to 7 km distance from the crater.
Indonesia - Volcanic eruption, update (ECHO 30 Mar 2025)Tue, 25 Mar 2025 11:27

  • Following the eruptions of the Lewotobi Laki-laki volcano, in East Flores regency, East Nusa Tenggara province on 20-21 March, almost 4,500 people have been displaced as reported by the national authorities.
  • Since 23 March, minor explosions have been recorded and the ash column reached up to 100 m above the crater. Additionally, in the past 24 hours, fewer than 50 volcanic earthquakes have been recorded, a decrease compared to the more than 300 reported on March 20.
  • The alert level remains at 4, the maximum. All activities within a 6 km radius of the crater are prohibited, and people must avoid the southwest-northeast sector up to 7 km from the crater.
Detailed event map. European Union, 2026. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Lewotobi report has been published on 12 Mar 2025 08:46.
The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-laki during 5-11 March. Eruptive events were detected on 5 and 7 March, though not confirmed visually; weather clouds sometimes prevented observations. Gray ash plumes that were sometimes dense rose as high as 2 km above the summit and drifted multiple directions during 8-11 March. Incandescence at the summit was occasionally visible in webcam images posted with the reports. The Alert Level remained at 3 (on a scale of 1-4) and the public was warned to stay 5 km away from the center of Laki-laki and 6 km in a semicircle clockwise from the SW to the NE. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
See the detail here

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (31), INGV (2), DesInventar (1), WMO (1), INFORM (2), (1), JSR (1),