Mount Semeru Eruption With An Eruption As High As 400 Meters

Mount Semeru erupted on Thursday (5/9/2024) at 19.34 WIB. BETWEEN/HO-PVMBG

Mount Semeru, which is on the border of Lumajang and Malang regencies, East Java, experienced an eruption with an eruption as high as 400 meters above the peak.

"There was an eruption of Mount Semeru on Thursday, September 5, 2024, at 19.34 WIB. The height of the eruption column was observed about 400 meters above the peak or 4,076 meters above sea level," said Mount Semeru Observation Post Officer Ghufron Alwi as reported by ANTARA, Thursday, September 5.

According to the volcanic ash column, it was observed that it was gray with thick intensity to the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 118 seconds.

Based on officers' records, the highest mountain on the island of Java previously experienced an eruption on Thursday at 00.59 WIB which was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 132 seconds, but the visual eruption was not observed.

Then the eruption also occurred at 02.53 WIB and the visual eruption was not observed, but the eruption was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 141 seconds.

Mount Semeru erupted again at 05.26 WIB and the eruption visual was not observed, but the eruption was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 109 seconds.

The status of Mount Semeru at Level II or Alert, so that the Center for Volcanology and Geological Hazard Mitigation (PVMBG) provides a number of recommendations, namely that people are prohibited from carrying out any activities in the southeast sector along Besuk Kobokan, as far as 8 kilometers from the summit (the center of the eruption).

Then outside of that distance, people are not allowed to carry out activities at a distance of 500 meters from the riverbank (river border) along Besuk Kobokan, because it has the potential to be affected by the expansion of hot clouds and lava flows up to a distance of 13 km from the summit.

The community is also not allowed to move within a three km radius of the crater/peak of Mount Semeru, because it is prone to the danger of throwing stones (lightning).

In addition, it is necessary to be aware of the potential for hot clouds, lava avalanches, and lahars along rivers/valleys that originate at the peak of Mount Semeru, especially along Besuk Kobokan, Besuk Bang, Besuk Kembar, and Besuk Sat, as well as the potential for lahars in small rivers that are tributaries of Besuk Kobokan.