Overall Orange alert 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 1000122
Name: Lewotobi (264180)
Glide number: VO-2025-000194-IDN
Lat/Lon: -8.54 , 122.78
Event Date: 14 Oct 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: 15 Oct 2025 05:01 UTC

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Indonesia - Lewotobi Laki-laki eruption (ECHO 21 Oct 2025)Thu, 16 Oct 2025 09:46

  • On 14 and 15 October, several powerful volcanic eruptions occurred at Lewotobi Laki-laki volcano on Flores Island, East Nusa Tenggara province, eastern Indonesia. The ash column from the strongest eruption reached up to 10 km above the peak on 14 October, and 8 km on 15 October, according to Indonesian authorities.
  • According to media, as of 16 October, dozens of people have been evacuated from the villages nearest the volcano, and the airport in Maumere on Flores Island has been closed.
  • The alert level is at the maximum (Level 4), and all public activities are prohibited within a 7- 8 km radius of the crater. Potential mudflow may occur in case of heavy rainfall.
  • On 16 October, a cloudy sky is expected, and moderate rain is forecast on 17 October.
Detailed event map. European Union, 2025. 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 30 Sep 2025 10:08.
The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that daily white-and-gray or gray ash plumes with variable densities rose as high as 2 km above the summit of Lewotobi Laki-laki and drifted N, NW, W, and SW during 23-29 September. According to a news article the Fransiskus Xaverius Seda Airport (60 km W) was closed on 26 September through early 27 September; volcanic ash caused six flights to be canceled. PVMBG noted that seismic activity during the week was dominated by low-frequency earthquakes, non-harmonic tremor, and signals indicating eruptive events and emissions. The number of explosions fluctuated at moderate levels and the number of deep volcanic earthquakes declined. Tilt data indicated inflation at shallow depths and GNSS (Global Navigation Satellite System) data showed continuing deformation. At 1500 on 29 September the Alert Level was lowered to 3 (on a scale of 1-4) and the public was warned to stay 6 km away from the center of Laki-laki. Sources: Antara News,Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
See the detail here

Latest media headlines

Indonesia, l''eruzione del Lewotobi Laki-Laki in timelapse 10/17/2025 12:54:00 PM.

Un video in timelapse di un''enorme colonna di cenere che fuoriesce dal monte Lewotobi Laki-Laki, sull''isola indonesiana di Flores, durante l''eruzione del vulcano. I materiali vulcanici sono stati lanciati a 10 chilometri (6,2 miglia) sop
...(more)
RI Govt to store Javan rhino sperm, eggs in biobank for reproduction 10/17/2025 11:20:00 AM.

Yogyakarta (ANTARA) - Indonesia will preserve sperm and eggs from the critically endangered Javan rhinoceros in a biobank to support assisted reproductive technologies, including in-vitro fertilization (IVF), the forestry minister said on F
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Indonesia retiree rewilds world’s largest volcano lake as church deman.. 10/17/2025 4:35:00 AM.

SAMOSIR, Indonesia — On retirement from public life, Wilmar Eliaser Simandjorang found a quiet place on a hillside overlooking Lake Toba, on the Indonesian island of Sumatra, to write about this landscape sacred to the region’s Batak people
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Indonesia - Lewotobi Laki-laki eruption (media, MAGMA, BMKG) (ECHO Dai.. 10/16/2025 7:15:00 PM.

On 14 and 15 October, several powerful volcanic eruptions occurred at Lewotobi Laki-laki volcano on Flores Island, East Nusa Tenggara province, eastern Indonesia. The ash column from the strongest eruption reached up to 10 km above the peak
...(more)

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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 (32), (2), INGV (2), DesInventar (1), WMO (1), INFORM (2), JSR (1),