The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok was ongoing during 2-8 April. White steam-and-gas plumes rose as high as 120 m above the summit of the cone and drifted NE, E, and SE on most days; white-and-gray plumes rose 30 m and drifted E on 3 April. Nighttime webcam images accompanying the daily reports often showed incandescent material being ejected above the summit, as far as 600 m from the vent during 3-4 April. Rumbling was heard on 3 April and a lava flow was visible, but it remained confined to the crater. 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)