Indonesia’s Mount Anak Krakatau Eruption Continues, Public Urged to Stay Alert

Current volcanic activity spotted at Mount Anak Krakatau South Lampung, Lampung, on September 5, 2026. (PVMBG)

On 5 September, volcanic activity at Mount Anak Krakatau in South Lampung, Lampung, continued following a sustained eruption that began at 11.07 pm local time on the previous day. Loud bangs and rumbling sounds were reported from the volcano observation post in Pasauran.

Authorities have urged residents, visitors and tourists to remain at least three kilometres from the active crater and avoid approaching the area to watch or record the eruption, as volcanic material could still be ejected.

The activity has prompted concerns among coastal communities in Banten and Lampung over a possible tsunami, particularly in light of the deadly tsunami on December 22, 2018, linked to Mount Anak Krakatau. However, the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) said its latest assessment found that the volcano’s post-2018 growth remains relatively small and is not currently capable of collapsing on a scale that could trigger a tsunami.

The volcano remained at Alert Level III. An observation report identified the ongoing eruption as a lava fountain, visible during the night. One eruption event was recorded, with an amplitude of 70 millimetres and a reported duration of 21,600 seconds.

The National Disaster Management Agency (BNPB), PVMBG and regional authorities continue to monitor developments closely. Officials are also strengthening preparedness by checking evacuation routes, assembly points and communication systems. Residents have been urged to remain vigilant, follow official guidance and avoid spreading unverified information about a potential tsunami.