The activity of Anak Krakatau volcano in the Sunda Strait remains at Alert Level III, according to an analysis by the Geological Agency as of Friday, September 11, 2026. This indicates continued vigilance is required, as the volcano continues to exhibit signs of unrest. Specifically, the analysis reveals a tendency for increased deep volcanic tremors. The alert level signifies that the potential for an eruption exists, and authorities are closely monitoring the situation. Residents and visitors in the vicinity of Anak Krakatau are urged to heed all warnings and recommendations from local disaster management officials. The Geological Agency will continue to provide updates as the situation evolves in the Sunda Strait.