Volcano Live

(Lewotolok)
Lomblen Island, Indonesia

8.27 S, 123.50 E
summit elevation 1423 m
stratovolcano

Lewotolo volcano forms a perfect cone on the northern peninsula of Lomblen Island. There are two craters (900 m x 800 m) and (250 m x 200 m). Potassium-rich calc-alkaline lavas from Lewotolo volcano contain the rare mineral zirconolite (CaZrTi2O7). Historical eruptions have included explosions from the summit crater.

2021 Lahars
On 6 April 2021 heavy rains created lahars which killed 18 people with 62 people missing.

2020-22 Eruptions
An eruption began at Lewotolo volcano on 27 November 2020. Continuous ash emissions reached 500 m above the crater. The eruption was accompanied by deep volcanic earthquake, local tectonic earthquake and tremor. On 29th November 2020 an increase in eruptive activity sent ash to an altitude of 50,000 ft. The aviation code was raised to RED as high level ash emissions can affect aircraft. A 2-km radius exclusion zone was placed around the crater. Potential hazards at the volcano include ejection of incandescent rocks and heavy ashfall within 2-km of the crater, avalanche and toxic gas emission.
In April 2021 strombolian eruptrions occurred at the volcano.

2012 Eruption
On 2nd January 2012 the alert status at Lewotolo volcano was raised to level 3 (out of a maximum 4). Increased volcanic tremor was recorded at the volcano on 2nd January 2012. Visually the volcano showed white emissions rising 80 m above the summit. A 2 km exclusion zone was placed around the volcano.

1996 Earthquakes
Seismicity increased at Lewotolo volcano in June 1996 when earthquakes reached a maximum of 100 per day. Epicenters were concentrated in the summit. The depths of the earthquake are less than 8 km below sea level. Some of the earthquakes are
located at very shallow depth.

1920 Eruption
A small eruption occurred in 1920.

Further reading
de Hoog, J.C. and van Bergen, M.J., 2000. Volatile-induced transport of HFSE, REE, Th and U in arc magmas: evidence from zirconolite-bearing vesicles in potassic lavas of Lewotolo volcano (Indonesia). Contributions to Mineralogy and Petrology, 139(4), pp.485-502.

Neumann van Padang, M., 1951. Catalogue of the Active Volcanoes of the World, Including Solfatara Fields, Indonesia.