Report on Lewotolok (Indonesia) — 13 January-19 January 2021
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
13 January-19 January 2021
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2021. Report on Lewotolok (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 13 January-19 January 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 a Strombolian eruption at Lewotolo continued during 13-19 January. Gray-and-white ash plumes rose 200-700 m above the summit daily and rumbling sounds were reported. Strombolian explosions ejected material 100-500 m above the summit, and incandescent material was ejected as far as 1.5 km SE from the crater. The Alert Level remained at 3 (on a scale of 1-4) and the public was warned to stay 4 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.