The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Lewotobi Laki-laki during 20-26 November. Ash plumes rose 1-3 km above the summit and drifted SW, W, and NW on 20 November. Daily ash plumes during the rest of the week rose 600-1,500 m above the summit and drifted SW, W, and NW. A majority of the webcam images posted with the daily reports showed incandescence at the summit. Rumbling was reported during 21-22 and 26 November. As of 2000 on 23 November there were 5,607 people in evacuation centers and another 7,363 people staying in other locations, according to a news article. Members of the Indonesian Army were sent to seven affected villages to assist with clean up and recovery. BNPB confirmed that at least 422 temporary housing units were to be built within the next two months to accommodate displaced families. The Alert Level remained at 4 (on a scale of 1-4). Residents were prohibited within a radius of 7 km from the center of Laki-laki and within a radius of 8 km on the SW, W, and NW flanks.

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), Antara News, Antara News, Antara News