A new eruption started at the Anak Krakatoa, or Krakatau, volcano on Rakata Island in Indonesia on 3 February 2022, as seen in this image captured by the Copernicus Sentinel-2 mission.
The eruption prompted the Anak Krakatau Volcano Observatory to raise the aviation colour code to orange.
The eruption started at around 16:15 local time, with a thick column of gas, with possible volcanic ash content, rising to around 200 m above the crater.
The explosion was likely phreatic-type, i.e. steam-rich blast of old rock without new magma emerging, that generated an ash-to-gas plume reaching approx. 3,280 ft (1,000 m) altitude and drifted NE.
The PVMBG volcano observatory reported a seismic signal with a maximum amplitude of 10 mm.
The explosive activity at the time of this update is still continuing. The volcano continues to produce frequent small to moderate ash emissions.
Ash plumes reached about 7,000 ft (2,100 m) this morning and extended SW of the volcano. The volcano observatory reported a seismic signal with a maximum amplitude of 46 mm and 45 mm and a duration of 49 and 50 seconds, respectively.
In 2018, a the eruption of Anak Krakatau triggered a devastating tsunami that killed several hundreds people. [Volcano Discovery, ESA]