Mount Semeru erupted 6 times this morning, the height of the eruption column reached 700 meters

Jakarta – Mount Semeru experienced six eruptions this morning. The height of the eruption column reached 700 meters above the peak. “The eruption of Mount Semeru occurred at 05.53 WIB with the height of the eruption column observed to be about 600 meters above the peak or 4,276 meters above sea level (masl),” said Mount Semeru Observation Post Officer, Liswanto, as reported by Antara, Tuesday (21/10/2025). Liswanto said that the ash column is white to gray in color with moderate intensity towards the south. The eruption occurred at 05.32 WIB with the height of the eruption column observed to be approximately 700 meters above the peak and the ash column observed as white to gray in color with moderate intensity to the south. Scroll to continue content “When the report was made, the eruption was still ongoing,” he said. The eruption of the highest mountain on the island of Java was also recorded to have occurred at 05.21 WIB with the height of the ash column observed at approximately 700 meters above the peak, as well as at 00.35 WIB, 00.23 WIB and 00.20 WIB. Liswanto explained that Mount Semeru still has Alert or Level II status, so the Center for Volcanology and Geological Disaster Mitigation (PVMBG) has provided a number of recommendations. The public is prohibited from carrying out any activities in the southeastern sector, along Besuk Kobokan, as far as eight kilometers from the peak (center of the eruption). Beyond this distance, people should not carry out activities within 500 meters of the riverbank along Besuk Kobokan because they have the potential to be affected by the expansion of hot clouds and lava flows up to a distance of 13 kilometers from the peak. “The public is also advised not to carry out activities within a three kilometer radius of the crater or peak of Mount Semeru because it is prone to the danger of glowing rocks,” he said. He appealed to the public to be aware of the potential for hot clouds, lava avalanches and rainy lava along rivers/valleys whose water flow originates at the peak of Mount Semeru, especially along Besuk Kobokan, Besuk Bang, Besuk Kembar and Besuk Sat, as well as the potential for lava in small rivers that are Kobokan Rivers. (ygs/yld)