JMA reported that there were two events and four explosions at Minamidake crater (at Aira Caldera?s Sakurajima volcano) during 3-10 September, with ash plumes rising as high as 1.7 km above the crater rim.
Crater incandescence was occasionally visible at night.
An explosion at 0304 on 9 September ejected material as far as 700 m.
The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)