PVMBG reported that the eruption at Lewotolok continued during 22-28 May. White steam-and-gas plumes rose 200-700 m above the summit and drifted W and NW. On 25 May white-and-gray ash plumes rose as high as 500 m and drifted W and NW. At 0635 on 27 May a dense gray-to-black ash plume rose 300 m and drifted W. According to a news report the lava flow on the W flank advanced 100 m to a total length of 1.3 km by 27 May; the advancement rate had slowed during the period weeks. The Alert Level remained at 3 (on a scale of 1-4) and visitors and residents of Lamawolo, Lamatokan, and Jontona were warned to stay 2 km away from the vent and 3 km away from the vent on the S and SE 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.

Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Antara News