Asosan volcano (Kyushu, Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 August-27 August 2019 (Continuing Activity)
JMA reported that during 18-23 August ash plumes rose from Asosan and drifted N and NW. Crater incandescence was visible at night. An eruption recorded during 1130-1945 on 25 August generated ash plumes that drifted E.
Mi, 21. Aug 2019, 06:0006:00 AM | VON: VN
The sulfur dioxide emission rate was 1,800 tons per day on 21 August and remained high on 25 August. The Alert Level remained at 2 (on a scale of 1-5).
Source: Japan Meteorological Agency (JMA)
From: Global Volcanism Program, 2019. Report on Asosan. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 21 August-27 August 2019. Smithsonian Institution and US Geological Survey.