Large rocks fell as far as 2.5 kilometers (1.5 miles) from the Sakurajima volcano Sunday night in the southern prefecture of Kagoshima.

By Monday morning, 33 of them left their homes for a nursing care facility in a safer part of the region, according to Kagoshima city.

NHK said others subject to evacuation might have evacuated to other locations.

A dusting of ash was visible on cars in Kagoshima, but no damage or injuries have been reported.

Schools in the area are on summer recess but closed Monday for clubs and extracurricular activities.

JMA warned of the potential for falling volcanic rocks within 3 kilometers (1.8 miles) of the crater and possible flow of lava,

The chances of more explosive violent eruptions were low,

Residents still should be watchful for falling rocks, mudslide and pyroclastic flow, said Tsuyoshi Nakatsuji.