On 26 January, at 7:30 AM, increased eruption activity spewed ash over the surrounding area.

During February 2011, a lava dome formed in Shinmoedake's crater.

[6] On February 17, an evacuation advisory was put in place for the Miyakonojo area for 2,500 people after heavy rains threatened to produce lahars, and at least 63 people evacuated.

[10] On 6 March 2018, a large eruption began launching rocks and ash to a height of 4.5 km (2.8 mi).

[11] On 22 June 2018, another eruption occurred, 4 days after a 6.1 Mw earthquake struck Osaka on 18 June, sending smoke and rocks thousands of meters into the air.