The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that at 0200 on 16 February an eruptive event at Lewotolok generated a gray ash plume that rose around 200 m above the summit and drifted E. At 0922 on 16 February and at 0012 on 17 February dense white-and-gray ash plumes rose 100-200 m and drifted E and SE, respectively. Incandescence at the summit was visible in a webcam image from 0013 on 17 February. The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay 2 km away from the vent and 2.5 km away on the S, SE, and W flanks.

Geological Summary. The Lewotolok (or Lewotolo) stratovolcano occupies the eastern end of an elongated peninsula extending north into the Flores Sea, connected to Lembata (formerly Lomblen) Island by a narrow isthmus. It is symmetrical when viewed from the north and east. A small cone with a 130-m-wide crater constructed at the SE side of a larger crater forms the volcano's high point. Many lava flows have reached the coastline. Eruptions recorded since 1660 have consisted of explosive activity from the summit crater.

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