Japan's weather agency warned that a tsunami could arrive at the islands of Miyako and Yaeyama in the southern prefecture of Okinawa on Sunday following a large volcanic eruption in Indonesia.
The eruption occurred at Mount Semeru on the main island of Java on Sunday, according to Japan's Meteorological Agency.
On Nov 25, the Indonesian Center for Volcanology and Geological Hazard Mitigation (PVMBG) recorded volcanic activity on Mount Semeru, which is located on the border between Malang and Lumajang districts of East Java. The height of the ash column reached about 500 meters above the peak.
An eruption of the 3,676-meter-high volcano, located about 850 kilometers southeast of capital Jakarta, exactly one year ago led to the deaths of many people.
About 130 volcanoes are active in Indonesia, due to its location on the so-called 'ring of fire,' a belt of tectonic plate boundaries that revolves around the Pacific Ocean and causes frequent seismic activity.