The 2011 eruptions began on 19 January. On 26 January, at 7:30 AM, increased eruption activity spewed ash over the surrounding area. The ash closed four
railroad lines, and some airline service was cancelled due to heavy ash in the air. It was the largest eruption from Shinmoedake since 1959. On 27 January, the volcano alert level was raised to 3. 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. On 13 March, two days after the
2011 Tōhoku earthquake, the volcano once again erupted. The eruption forced the evacuation of several hundred residents. ==2018 eruptions==