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Report on Lewotolok (Indonesia) — 9 August-15 August 2023


Lewotolok

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 9 August-15 August 2023
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2023. Report on Lewotolok (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 9 August-15 August 2023. Smithsonian Institution and US Geological Survey.

Weekly Report (9 August-15 August 2023)

Lewotolok

Indonesia

8.274°S, 123.508°E; summit elev. 1431 m

All times are local (unless otherwise noted)


PVMBG reported that the eruption at Lewotolok continued during 9-15 August. On most days white steam-and-gas plumes rose as high as 500 m above the summit and drifted W and NW. Incandescence at the summit was visible in a webcam image from 11 August. Variable density gray ash plumes rose 500-800 m and drifted W and NW during 11-12 August. The Alert Level remained at 2 (on a scale of 1-4) and the public was warned to stay at least 2 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.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)