© KyodoAn aerial view shows Mt. Sakurajima in Kagoshima, southwestern Japan.
Residents near the Sakurajima volcano on Kyushu, Japan's southernmost main island, evacuated to safer places Saturday after the government raised its alert level to 4 on a 5-point scale, indicating a major eruption could be imminent.
Level 4 is the highest ever for Sakurajima, located just 4 kilometres away from the centre of the major southern port city of Kagoshima, since the current volcanic alert system was launched in 2007.
Kyushu Electric Power's Sendai nuclear power plant, which Tuesday became the first to be rebooted under tighter safety rules adopted in the wake of the 2011 Fukushima nuclear plant disaster, is located just 50km from the volcano. No abnormality has been reported at the plant.
The alert was raised to 4, meaning people living in the area should prepare to evacuate, from 3, which restricts entry to the mountain area. In response, the Kagoshima city government issued an evacuation advisory for areas near the mountain, affecting 77 residents, all of whom left the areas by evening.
Many earthquakes originating from the volcano have been recorded since 7am Saturday and an increase in crustal movement was also observed, the Japan Meteorological Agency said, adding those are signs indicating magma has risen to near the volcanic vent.
Comment: The number of volcanoes erupting right now is greater than the 20th century's YEARLY average! Other signs of increased volcanic activity recently include: