JAKARTA - Mount Semeru, which is on the border of Lumajang and Malang Regencies, East Java, erupted with an eruption height of 1.2 kilometers (km) above the peak on Tuesday afternoon.
"Mount Semeru erupted at 12.09 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, Liswanto, as reported by ANTARA, Tuesday, June 9.
According to him, the column of ash was observed to be white to gray with medium intensity towards the northeast. When the report was made, the eruption was still ongoing.
Mount Semeru has recorded 10 eruptions on Tuesday since 04.43 to 12.47 WIB with the height of the observed eruption of 600 meters to 1,200 meters above the peak.
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 continued, 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 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 and the potential for lava on small rivers which are tributaries of Besuk Kobokan," said Liswanto.
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