Indonesia’s Geological Agency raised the alert status of Mount Lewotobi Laki-laki in East Flores to Level IV (Awas) at 10:00 WITA on September 6, 2025, due to increased seismicity, continuous tremor, and deformation indicating shallow magma ascent.
Seismic activity at Mount Anak Krakatau intensified on October 28, 2023, prompting Indonesian authorities to issue a 5 km (3.1 miles) exclusion zone around the main crater. The heightened activity included a range of earthquakes and internal vibrations indicative of potential eruptions.
A high-level eruption occurred at Indonesia’s Semeru volcano on December 4, 2022, prompting authorities to raise the Alert Level from III to IV. The last major eruption at this volcano took place on December 4, 2021, leaving 51 people dead and several hundred others injured.
The Alert Level for Raung volcano was raised from 1 to 2 on July 29, 2022. The decision was based on the results of seismic monitoring and unstable conditions at the crater. The last eruption of this volcano took place in 2021 (VEI 2).
Seismic activity under the Ruang volcano in Indonesia’s North Sulawesi increased during the month of April, forcing authorities to raise the alert level to 2. The last eruption of this volcano took place in 2002 (VEI 4).
A sudden eruption took place at the Indonesian Krakatau volcano at around 07:13 UTC on October 26, 2021. The Aviation Color Code was raised to Orange. According to Anak Krakatau Volcano Observatory, the eruption was recorded on a seismogram with a maximum amplitude…
At least 7 pyroclastic flows descended down the slopes of Merapi volcano, Indonesia starting at 21:58 UTC on August 7, 2021, with ash rising up to 3.6 km (12 000 feet) above sea level. No casualties were reported. The Aviation Color Code remained at Orange….
A strong eruption started at the Indonesian Sinabung volcano, North Sumatra at 06:20 UTC on July 28, 2021 (13:20 local time). The Aviation Color Code was raised to Red. According to Sinabung Volcano Observatory, the eruption lasted for about 12 minutes. Two volcanic…
A significant eruption took place at the Indonesian Sinabung volcano at 16:35 UTC on June 6, 2021, producing a pyroclastic flow and ejecting volcanic ash up to 9.1 km (30 000 feet) above sea level. The eruption lasted for 421 seconds and was not clearly observable…
Eruption at Raung volcano continues at elevated levels, with several strong explosions ejecting ash up to 5.5 km (18 000 feet) above sea level over the past 3 days. Raung Volcano Observatory said non-harmonic tremors are present at the volcano since January 20, when…
