At 1100 on 17 September the Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) lowered the Alert Level for Ranakah to 1 (on a scale of 1-4) noting decreased seismicity. The numbers of both of deep volcanic earthquakes and low-frequency earthquakes had increased in December 2024 but since then seismicity decreased, specifically the number of deep volcanic earthquakes. No changes at the lava dome had been observed. The public was warned to stay away from the active crater area.

Geological Summary. The Anak Ranakah (Child of Ranakah) lava dome was formed in 1987 in an area without previous recorded eruptions at the base of the large older lava dome of Gunung Ranakah. An arcuate group of lava domes extending about 12 km west from Gunung Ranakah to Poco Mandosawa occurs on the outer N flanks of the poorly known Poco Leok caldera on western Flores Island.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)