PVMBG reported that the eruption at Lewotolok was ongoing during 19-25 April. On 19, 21, and 23 April white-and-gray plumes rose 200-700 m and drifted E, NE, N, and NW. White steam-and-gas plumes of variable densities were seen during 20, 22, and 24-25 April rising as high as 500 m above the summit and drifting SW, W, and NW. Crater incandescence was visible in webcam images posted with the reports during 21-22 April. The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay 2 km away from the summit crater.

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)