Anak Krakatau experiences four eruption earthquakes in last six hours

Mount Anak Krakatau, located in the waters of the Sunda Strait off South Lampung, recorded four eruption earthquakes in the last six hours, based on volcanic activity monitoring results.

“A total of four eruption earthquakes with amplitudes of 58-67 mm and earthquake durations of 30-54 seconds,” said Suwarno, Head of the Anak Krakatau Monitoring Post in Hargopancuran, Rajabasa District, South Lampung, on Monday.

According to him, other seismic observations also recorded several shallow and deep volcanic earthquakes with amplitudes reaching 27-63 mm and earthquake durations of 17-250 seconds.

He explained that the increase in volcanic activity continues to be monitored intensively through both visual and instrumental observations to determine the ongoing development of the volcano’s activity.

For visual observation, Mount Anak Krakatau was clearly visible to obscured by fog, crater smoke was not observed, and the weather was clear to cloudy, with light winds blowing towards the northwest.

“The volcano is clearly visible to obscured by fog 0-III. Main crater smoke was observed to be grey and black in colour with thick intensity, reaching approximately 100-400 metres above the summit. Weather is clear to cloudy, with light winds towards the north, northeast, west and northwest,” he said.

The increase in volcanic activity occurring since early July formed the basis for the Geological Agency to raise the status of Mount Anak Krakatau from Level II (Advisory) to Level III (Standby). Nevertheless, the volcano’s activity remains within a category that can be monitored through the implementation of mitigation measures in accordance with PVMBG recommendations.

The public, tourists and fishermen are urged not to carry out activities within the radius recommended by volcanological authorities to avoid risks that may arise from eruptions or the ejection of volcanic material.

In addition, fishermen operating in the waters around the Sunda Strait are also asked to continue monitoring official information regarding Mount Anak Krakatau’s activity and weather conditions before going to sea.

Residents are expected not to be easily influenced by unverified information and to refer only to official information provided by authorised institutions.