JMA reported that 12-18 February incandescence was visible from Minamidake crater (at Aira Caldera?s Sakurajima volcano), and two events and two explosions were recorded.
One of the explosions occurred at 0624 on 14 February, producing a plume that rose 1.5 km above the crater rim and ejecting material 500-700 m from the crater.
An explosion on 17 February generated a plume that rose 2.3 km above the crater rim and ejected material 1-1.3 km from the crater.
The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)