Mount Semeru Experienced 23 Earthquakes During the Eruption for Six Hours

Lumajang - Mount Semeru, which is on the border between East Java and East Nusa Tenggara, has erupted. The eruption was recorded at 00.00-12.00 WIB.

"For earthquake observations, 23 volcanic earthquakes/eruptions with amplitudes of 15-22 mm and earthquake durations of 95-174 seconds were recorded," said Mount Semeru Observation Post Officer Mukdas Sofian in a written report received in Lumajang.

In addition, Mount Semeru has also recorded 11 times of eruption earthquakes with an amplitude of 3-6 mm, and the earthquake lasted 38-78 seconds.

"Visually, the volcano is covered by 0-II fog to 0-III fog. The crater smoke is not observed. Cloudy weather to rain, weak wind to the northwest," he said.

He explained that Mount Semeru was in the Level III (Alert) volcanic activity status, so the Center for Volcanology and Geological Hazard Mitigation (PVMBG) provided a number of activities, namely that people should not carry out any activities within 13 kilometers from the summit.

Outside this distance, he said, the public should 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 also prohibited from carrying out activities within a radius of 5 kilometers from the crater/peak of Mount Semeru, because they are prone to the danger of stone throwing (pijar)," he said.

The public needs to be aware of the potential for hot clouds, lava discharge, and lahar along the river/valley streams 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.