Image of the day

Ash plume rises from Anak Krakatau Volcano, Indonesia

Earth Observation | Copernicus
Volcanoes
Krakatau
Location: Indonesia
Credit: European Union, Copernicus Sentinel-2 imagery

Anak Krakatau Volcano is located in the Sunda Strait between Java and Sumatra. It emerged in 1927 from the underwater caldera left by the 1883 Krakatoa eruption and is one of Indonesia's most active volcanoes, having erupted repeatedly in recent years.

On 2 July 2026, Indonesian authorities raised the volcano's alert level to Level III, the second-highest tier in Indonesia’s four-level volcanic alert system, following increased volcanic activity and ash emissions. This natural-colour image, acquired by one of the Copernicus Sentinel-2 satellites on the same day, shows the ash plume rising from Anak Krakatau and drifting northwards over the Sunda Strait. The volcano's bare, reddish-brown cone stands out against the green, vegetated islands nearby, with a dark patch marking the active crater.

Copernicus data support the monitoring of volcanic activity, ash plumes, and changes in remote island environments, contributing to situational awareness and risk assessment.