PVMBG reported that eruptive activity at Lewotobi’s Laki-laki volcano continued during 19-25 June. Daily gray or white-and-gray ash plumes rose 100-1,000 m above the summit and drifted SW, W, and NW. According to news articles PVMBG noted that activity remained at high levels and 5-7 intense eruptive events were recorded daily during 16-22 June. Seismicity indicated that magma continued to move to the surface. According to news articles, recent ashfall had contaminated water resources downwind, significantly impacting residents of Dulipali (6 km NNW) in the Ile Bura District and Hokeng Jaya (4 km NW), Klatanlo (5 km NW), Persiapan Padang Pasir, Persiapan Nawokote B, Boru (8 km WNW), Nawokote (5 km W), and Pululera in Wulanggitang District; tanks of clean water were distributed on 23 June. Ashfall was reported in Hikong (15 km W) and Timutawa (15 km WNW), and in agricultural areas in the Taliura District on 22 June, and caused decreased visibility in areas along the Trans-Flores-Highway between Maumere (62 km W) and Larantuka (35 km NE), and in the Wagte and Lela districts. Ashfall on 25 June again impacted residents of Hikong and Timutawa and covered agricultural fields. The Alert Level remained at 3 (the second highest level on a scale of 1-4) and the public was warned to stay outside of the exclusion zone, defined as a 3-km radius around both Laki-laki and Perempuan craters, 4 km to the NNW and SSE of Laki-laki.

Geological Summary. The Lewotobi edifice in eastern Flores Island is composed of the two adjacent Lewotobi Laki-laki and Lewotobi Perempuan stratovolcanoes (the "husband and wife"). Their summits are less than 2 km apart along a NW-SE line. The conical Laki-laki to the NW has been frequently active during the 19th and 20th centuries, while the taller and broader Perempuan has had observed eruptions in 1921 and 1935. Small lava domes have grown during the 20th century in both of the summit craters, which are open to the north. A prominent cone, Iliwokar, occurs on the E flank of Perampuan.

Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Metro TV News, Metro TV News, Metro TV News, Metro TV News