Report on Lewotolok (Indonesia) — 12 May-18 May 2021
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 12 May-18 May 2021
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2021. Report on Lewotolok (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 12 May-18 May 2021. Smithsonian Institution and US Geological Survey.
8.274°S, 123.508°E; summit elev. 1431 m
All times are local (unless otherwise noted)
PVMBG reported that white-and-gray plumes from Lewotolok rose as high as 600 m and drifted W and NW during 12-17 May. Incandescent material was ejected 100-300 m above the summit during 14-16 May and 300 m SE on 15 May. Rumbling and thumping sounds were heard during 14-17 May. The Alert Level remained at 3 (on a scale of 1-4) and the public was warned to stay 3 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.