LUMAJANG - Mount Semeru, which has a height of 3,676 meters above sea level (msl), has again launched a hot ash cloud (APG) as far as 4 kilometers from the top of Mahameru.
"The APG occurred at 17.08 WIB with a glide distance of 4,000 meters and stopped at that point," said the Head of the Lumajang Regional Disaster Management Agency (BPBD) Isnugroho, reported by ANTARA, Thursday, January 15.
According to him, the distance of the sleigh is 4 kilometers is safe and far from residential areas, but the BPBD Lumajang still appeals to people on the slopes of Mount Semeru to increase their vigilance.
"Currently, volcanic ash rain is temporarily reported to have occurred in Klopo sawit Village and Sumbermujur in Candipuro District. We urge people who go out of the house to use masks," he said.
Meanwhile, Mount Semeru Observation Post Officer, Liswanto, said that there were 40 times of eruption/erupting earthquakes with an amplitude of 10-22 mm, and the earthquake lasted 94-139 seconds in the earthquake observation on Thursday at 12.00-18.00 WIB.
"There was one aftershock with an amplitude of 6 mm and a long earthquake of 37 seconds and one aftershock with an amplitude of 8 mm, and a long earthquake of 44 seconds," he said.
Mount Semeru is in Level III status (Alert), so the Center for Volcanology and Geological Hazard Mitigation (PVMBG) has provided a number of recommendations, namely that the public should not carry out any activities in the southeast sector, along the Besuk Kobokan as far as 13 km from the peak (center of the eruption).
"Outside this distance, 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 km from the peak," he said.
Liswanto also appealed to the public not to carry 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).
The public must also be aware of the potential for hot clouds, lava ejection, and lahar along the river/valley flows upstream of the Semeru Volcano peak, especially along Besuk Kobokan, Besuk Bang, Besuk Kembar, and Besuk Sat, as well as the potential for lahar in small rivers which are tributaries of Besuk Kobokan.
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