Overall Green alert Volcanic eruption for Krakatau
in Indonesia

Event summary

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

Name: Krakatau
Lat/Lon: -6.102 , 105.423
Event Date: 31 Mar 2023 07:40 UTC
Exposed Population 30km: About 7000 people within 30km
Exposed Population 100km: About 7380000 people within 100km
Max Volc. Explosivity Index VEI: 6
Population exposure index: 4
Inserted at: 31 Mar 2023 05:40 UTC


For more info on GDACS alert score click here.

Historical Timeline

Volcano Timeline

IDGDACS alert colorDateEruption DetailsSource
1 31 Mar 2023 07:40 JRC

Exposed population

The eruption happened in Indonesia , Province of Lampung (population 6,459,217) . The nearest places are Kalianda, Bakau, Gajam, Kiluan, Kolitjaah, Anjer-Kidu, Umbulan Pepanggar, Kekatang, Bantarwaru, Labuhan, and Marbu.

Radius Population
100 km 7.4 million people
75 km 2.5 million people
50 km 200000 people
30 km 7200 people
20 km 6300 people
10 km 6300 people
5 km 1600 people
2 km no people

Detailed event map. European Union, 2023. 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

Region Province Country Population
Lampung Indonesia 6.5 million people
Jawa Barat Indonesia 38.1 million people
Jakarta Raya Indonesia 8.8 million people
Sumatera Selatan Indonesia 6.6 million people
Bengkulu Indonesia 1.3 million people
Jawa Tengah Indonesia 30.7 million people
Christmas I. Christmas Island -
Jambi Indonesia 2.2 million people

Affected populated places

Name Region Province Country City class Population Distance
Kalianda Lampung Indonesia Village - 45 km
Bakau Lampung Indonesia Village - 46 km
Gajam Lampung Indonesia Village - 47 km
Kiluan Lampung Indonesia Village - 51 km
Kolitjaah Banten Indonesia Village - 51 km
Anjer-Kidu Banten Indonesia Village - 52 km
Umbulan Pepanggar Lampung Indonesia Village - 53 km
Kekatang Lampung Indonesia Village - 54 km
Bantarwaru Banten Indonesia Village - 54 km
Labuhan Banten Indonesia Village 34000 people 54 km
Kaduperasi Banten Indonesia Village - 56 km
Ketapang Lampung Indonesia Village - 57 km
Tjiteureup Banten Indonesia Village - 57 km
Babakancibeber Banten Indonesia Village - 59 km
Tarahan Lampung Indonesia Village - 61 km
Bodjongdjuruh Banten Indonesia Village - 62 km
Menango Lampung Indonesia Village - 64 km
Sumur Banten Indonesia Village - 64 km
Tambangan Lampung Indonesia Village - 65 km
Pasirgadung Banten Indonesia Village - 66 km
Mandalawangi Banten Indonesia Village - 66 km
Merak Banten Indonesia Village - 67 km
Marbu Lampung Indonesia Village - 69 km

see full list

Critical infrastructure

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


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Branti TKG 86 Civ. Paved No 6000 99 km


Name LOCODE Country Distance
Kalianda Indonesia 44 km
Anyer Lor Indonesia 55 km
Cigading IDCIG Indonesia 60 km
Tanjung Gerem Indonesia 65 km
Merak IDMRK Indonesia 67 km
Panjang IDSPA Indonesia 72 km


Nuclear plants

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.