Overall Green Volcanic eruption for Semeru
in Indonesia

Event summary

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

GDACS ID VO 1000007
Name: Semeru (263300)
Lat/Lon: -8.11 , 112.92
Event Date: 01 Dec 2020 UTC
Exposed Population 30km: About 870000 people within 30km
Exposed Population 100km: About 19740000 people within 100km
Max Volc. Explosivity Index VEI: 3
Population Exposure Index PEI: 5
Inserted at: 01 Dec 2020 07:05 UTC

GDACS Score

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Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Indonesia - Volcanic activity (ECHO 01 Dec 2020)Tue, 01 Dec 2020 02:00

  • The activity ofLewotolo Volcano (Lembata Regency, Solor Archipelago, south-eastern Indonesia) continues, as the latest eruption occurred on 30 November at 15.20 UTC.
  • The observed volcanic ash reached up to 2,123 m, and authorities extended the prohibition of any activity within 4 km radius from the centre of the volcano. About 4,628 individuals living in the disaster-prone area ofLewotolo have been displaced to 7 evacuation centres, and there is a need for sanitation and relief items to assist the local population, as reported by the Indonesian National Board for Disaster Management (BNPB).
  • Evacuation operations are ongoing also in East Java Province, after the eruption of Mount Semeru on 1 December. According to authorities, about 550 residents have been displaced, and any activity has been prohibited within a 4 km radius of the active crater of Mount Semeru.
  • According to the Darwin Volcanic Ash Advisory Centre (VAAC), the red aviation colour code remains for Lewotolo, and an orange aviation colour code has been issued for Semeru.
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 Semeru report has been published on 25 Nov 2020 16:43.
PVMBG reported that the eruption at Semeru continued during 17-24 November, though weather conditions sometimes prevented visual confirmation. Dense white-to-gray plumes rose up to 300 m above the summit. Crater incandescence was visible at night during 19-20 November and 11 incandescent avalanches traveled 500-1,500 m down the Kembar and Kobokan drainages on the S flank. Two eruptive events produced gray ash plumes that rose 100-200 m above the summit and drifted SW during 23-24 November. The Alert Level remained at 3 (on a scale of 1-4), with a general exclusion zone of 1 km and extensions to 4 km in the SSE sector. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
See the detail here

Latest media headlines

Des centaines de villageois fuient l’éruption d’un volcan 12/2/2020 3:05:00 PM.

Des centaines d’Indonésiens ont fui leur village dans l’île de Java après l’entrée en éruption d’un volcan qui a craché de la lave et propulsé des cendres chaudes à plusieurs kilomètres de hauteur.

View more news

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),