JAKARTA - Mount Semeru on the border of Lumajang and Malang Regencies, East Java, erupted again with an eruption height of 1.2 kilometers above the peak accompanied by moderate rumbling.
"There has been an eruption of Mount Semeru at 16.39 WIB with an observed eruption column height of about 1.2 km above the peak or 4,876 meters above sea level (msl)," said Mount Semeru Observation Post Officer, Sigit Rian Alfian in a written report reported by ANTARA, Monday, June 29.
According to him, the observed ash column was white to gray with a thick intensity inclined to the northeast and east. The eruption was recorded on the seismogram with a maximum amplitude of 22 mm and a duration of approximately 2 minutes 9 seconds.
"The eruption of the highest mountain on Java Island was accompanied by a moderate rumble and currently Mount Semeru is at Level III Status (Alert)," he said.
Based on the officers' records, the mountain, which has a height of 3,676 meters above sea level, has erupted nine times on Monday since 00.04 WIB until 19.23 WIB with an eruption height of 500 meters to 1,200 meters above the peak.
Meanwhile, the Head of the Lumajang Regional Disaster Management Agency (BPBD) Isnugroho said his party had received information from PVMBG regarding the eruption of Mount Semeru accompanied by moderate rumbling.
"So far there has been no direct impact on the community, but BPBD officers are always on standby at the Curahkobokan Post and the Oro-oro Ombo Post to continue to monitor the development of Mount Semeru's activities," he said.
Currently, the volcanic activity of Mount Semeru is at Level III Status (Alert) with the recommendation that the public not carry out any activities in the southeast sector along Besuk Kobokan as far as 13 kilometers from the peak (center of the eruption).
Outside this distance, he said, the public does not carry out activities at a distance of 500 meters from the river bank (river border) along Besuk Kobokan, because they have the potential to be hit by the expansion of the hot cloud and lava flow up to a distance of 17 kilometers from the peak.
"The public is prohibited from carrying out activities within a radius of five kilometers from the crater/peak of Mount Semeru, because they are prone to the danger of stone throwing (pijar)," he said.
He asked the public to also be aware of the potential for hot clouds, lava discharge, and lahar along the river/valley streams upstream of the summit of Mount Semeru.
"Especially along Besuk Kobokan, Besuk Bang, Besuk Kembar, and Besuk Sat, as well as the potential for lava on small rivers which are tributaries of Besuk Kobokan," said Isnugroho.
Reporter : Zumrotun Solichah
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