Report on Semeru (Indonesia) — 15 April-21 April 2020
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 15 April-21 April 2020
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2020. Report on Semeru (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 15 April-21 April 2020. Smithsonian Institution and US Geological Survey.
8.108°S, 112.922°E; summit elev. 3657 m
All times are local (unless otherwise noted)
PVMBG reported that the eruption at Semeru continued during 1-16 April. Eruptive events produced gray ash plumes that rose 400-600 m above the summit. Additionally, gray-to-white gas plumes from Jonggring-Seloko Crater rose 200-400 m; incandescent material was ejected 10-20 m above the crater. Incandescent lava flows traveled 500-1,000 m down the Kembar, Bang, and Kobokan drainages (on the S flank). At 0608 on 17 April a pyroclastic flow descended 2 km along the Bang drainage. Ash plumes drifted N, SE, and SW during 15-16 and 20-21 April. The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general 1-km radius from the summit and 4 km on the SSE flank.