Jakarta – Mount Semeru experienced an outburst four times this morning. The height of the eruption reaches 1 kilometer. Reported by Antara, a mountain on the border of Lumajang and Malang Regency, East Java, experienced the first eruption on 00.45 WIB. Visual eruption is not observed. When the officers reported, the eruption was still ongoing. “Then Mount Semeru outburst returned at 05.31 WIB with the height of the eruption column that was observed about 800 meters above the peak or 4,476 MDPL,” said Mount Semeru Observation Post Officer, Liswanto, in a written report in Lumajang, Thursday (8/21/2025). Browse to continue the content The ascolom is white to gray with medium intensity in the southwest. When the report was made, the eruption was still in progress. Not long after, the third outburst took place exactly at 05.48 WIB, with the height of the eruption column observed about 1 kilometer above the peak or height of 4.676 meters above sea level. “It was observed that the ascolom was white to gray with moderate intensity in the southwest. When the report was made, the eruption was still ongoing,” he said. The highest mountain on the island of Java was re -recorded on 06.58 WIB, with the height of the eruption column that is observed about 800 meters above the peak (4.476 meters above sea level). It is observed that the ascolom is white to gray with a thick intensity in the southwest. Outbursts are recorded in seismograph with a maximum amplitude of 21 mm and a duration of 150 seconds. Liswanto explained that Mount Semeru was still alert or level II, so that the volcanology and geological disaster mitigation center (PVMBG) made a number of recommendations, namely that the community was prohibited from carrying out any activity in the southeastern sector, along the Kobokan, up to 8 kilometers from the peak. Apart from this distance, he said, the community should not do activities at a distance of 500 meters from the riverbank along the visit because it has the potential to be influenced by expanding hot clouds and lava to a distance of 13 kilometers from the peak. “The community is also advised not to move within a 3 kilometer radius of the crater/peak of the mountain semeru because it is prone to the dangers of lightning,” he said. The community is advised to be aware of the potential of warm clouds, lava waterfalls and rainlava along the river/valley, whose water flows on the peak of the mountain semeru, especially along the visiting Kobokan, cord, twin visitors, and occupied, as well as the potential of lava in small rivers. (Rdp/zap)
Mount semeru erases 4 times today, the height of the eruption is 1 km
