JMA reported nighttime crater incandescence at Minamidake Crater (at Aira Caldera?s Sakurajima volcano) during 6-14 January.
Small eruptive events were occasionally recorded by the seismic network.
Explosions were recorded during 6, 10, and 12-14 January; ash plumes rose 1.8-2.3 km above the crater rim and material was ejected as far as 1.3 km away from the crater.
The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)