Lumajang, East Java, Dec. 22 -- Tremors from rain-induced lava floods on Mount Semeru continued for over three hours, leading to rising water levels across the area's watersheds on Sunday afternoon (December 21).

"During seismic observations over the past six hours, from 12:00 p.m. to 6:00 p.m., one flood tremor earthquake was recorded with an amplitude of 45 mm and a duration of 12,000 seconds," an officer at the Mount Semeru Observation Post, Liswanto, informed in a report on Sunday.

According to him, Mount Semeru also experienced 30 eruption earthquakes with amplitudes of 12-22 mm and durations of 91-114 seconds, three avalanche earthquakes with amplitudes of 5-7 mm and durations of 47-56 seconds, and one harmonic earthquake with an ...