JMA reported that during 18-25 May incandescence from Minamidake Crater (at Aira Caldera?s Sakurajima volcano) was visible nightly.
There were 17 explosive events and five eruptive events with plumes rising as high as 2.8 km above the crater rim.
Material was ejected 800-1,300 m away from the crater.
The daily sulfur dioxide emission rate was high; it was just over 1,200 tons per day on 22 May.
The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)