Mount Sakurajima's 600th explosive eruption of the year was observed Saturday in Kagoshima Prefecture and the activity is expected to continue, a local meteorological observatory said, warning of falling rocks and avalanches.

With winds from the east tending to blow into Kagoshima from August to September, 607 grams of ash per sq. meter had fallen on the city as of Friday, compared with 753 grams for the whole of 2010, when the volcano had a record-high 896 explosive eruptions, it said.