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Report on Lewotolok (Indonesia) — 30 December-5 January 2021


Lewotolok

Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
30 December-5 January 2021
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2020. Report on Lewotolok (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 30 December-5 January 2021. Smithsonian Institution and US Geological Survey.

Weekly Report (30 December-5 January 2021)

Lewotolok

Indonesia

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 30 December-5 January. Gray-and-white ash plumes were visible daily, rising as high as 1 km above the summit. Rumbling and banging sounds were reported almost daily, and incandescent material was ejected as far as 1 km SE from the crater during 30-31 December and 4-5 January. Strombolian explosions ejected material 100-200 m above the summit crater during 1-5 January. The Alert Level was remained at 3 (on a scale of 1-4) and the public was warned to stay 4 km away from the summer 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.

Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Badan Nacional Penanggulangan Bencana (BNPB)