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Report on Lewotolok (Indonesia) — 16 March-22 March 2022


Lewotolok

Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
16 March-22 March 2022
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2022. Report on Lewotolok (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 16 March-22 March 2022. Smithsonian Institution and US Geological Survey.

Weekly Report (16 March-22 March 2022)

Lewotolok

Indonesia

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

All times are local (unless otherwise noted)


The eruption at Lewotolok continued during 15-22 March according to PVMBG. Almost daily white-and-gray ash plumes rose as high as 600 m above the summit and drifted in multiple directions. Crater incandescence, lava effusion, and rumbling sounds were reported on most days. 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 and 4 km away from the crater on the SE flank.

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)