The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok was ongoing during 25 February-4 March. Seismicity increased and was characterized by the emergence of harmonic tremor on 25 February and an increase in the number and intensity of earthquakes during 25-26 February. Tiltmeter data showed no deformation. White-and-gray ash plumes that were sometimes dense rose 200-700 m above the summit and drifted NW and W; eruptive events were recorded during 3-4 March though not visually confirmed. Incandescence at the summit was visible in webcam images and incandescent material was being ejected above the summit on most days. 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)