Overall Orange Volcanic eruption for Lewotobi in Indonesia on 14 Oct 2025 22:00 UTC

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Overall Orange Volcanic eruption for Lewotobi

in Indonesia

Event summary

Volcanic eruption Lewotobi is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

Name:	Lewotobi
Lat/Lon:	-8.542 , 122.775
Event Date:	14 Oct 2025 22:00 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:	4
Inserted at:	15 Oct 2025 05:01 UTC

GDACS Score

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Historical Timeline

Volcano Timeline

ID	Level	Date	Eruption Details	Source
1		14 Oct 2025 22:00	Volcanic ash observation to flight level 180 (5400m) at 14 2140 UTC move wnw, volcanic ash to flight level 220 (6600m) near summit.	DARWIN

Exposed population

The eruption happened in Indonesia , Province of Nusa Tenggara Timur (population 3,515,623) . The nearest places are Nobo, Lewotobi, Tabana, Kedang, Wairunu, Kloreamang, Kringa, Lamawolo, Liko, Werangdetoeng, and Nita.

Radius	Population
100 km	740000 people
75 km	640000 people
50 km	250000 people
30 km	84000 people
20 km	41000 people
10 km	18000 people
5 km	<1000 people
2 km	no people

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.

Affected Provinces

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Tsunami impact

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Tsunami affected locations

Initial conditions

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

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