S Lampung, Lampung (ANTARA) - Mount Anak Krakatau in the Sunda Strait, Lampung Province, erupted four times on Friday, two of which were accompanied by flames, the Volcanology and Geological Disaster Mitigation Agency (PVMBG) reported.

Head of the Mount Anak Krakatau Monitoring Post in Hargopancuran Village, Rajabasa Sub-district, South Lampung District, Lampung Province, Andi Suardi, stated on Friday that the eruptions occurred since afternoon until night.

The PVMBG noted that the volcano spewed a thin to medium grey ash column, with a height of 350 meters (m) above the peak towards the northeast at 1:12 p.m. (Western Indonesia Standard Time (WIB).

The next eruption occurred at 9:35 p.m. WIB and was recorded by the seismogram, with a maximum amplitude of 55 millimeters (mm) and a duration of 38 seconds.

The ash column was not observed, but eruption flames were seen with a height of up to about 200 m.

The volcano erupted again at 9:44 p.m. WIB, with eruption flames as high as about 150 m, but the eruption column could not be viewed. It was recorded by the seismograph, with a maximum amplitude of 52 mm.

The last eruption on Friday occurred at 11:28 p.m. WIB, with a maximum amplitude of 60 mm and a duration of two minutes and nine seconds. The height of the ash column was still not visible.

In January 2023, it was recorded that Mount Anak Krakatau had erupted 31 times, making it the most active volcano at present in Indonesia. The current status of the volcano is at Alert, or Level III.

The PVMBG urges the public, tourists, and hikers to not conduct any activities within a five-kilometer radius of the volcano’s active crater.

According to the PVMBG data, the intensity of the activity of Mount Anak Krakatau increased significantly since January 23, 2022, with a total of 23 eruptions being recorded since then to date.

Meanwhile, the other active volcano with high-activity intensity were Mount Marapi in West Sumatra Province, with 27 eruptions, and Mount Semeru in East Java, with 20 eruptions, in January 2023.

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Translator: Riadi Gunawan, Uyu Liman
Editor: Rahmad Nasution
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