Mount Ibu Erupts Again Early This Morning, Ash Height Around 600 Meters

Mount Ibu in North Maluku erupted again on Sunday (August 17, 2025) at 01:31 AM WIT. In the last week, Mount Ibu has erupted 23 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column reached 600 meters above the peak or 1,925 meters above sea level.

The ash column was observed to be gray with thick intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 73 seconds.

(Read: Indonesia Has the Most Active Volcanoes in the World)

According to MAGMA Indonesia's volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on August 17, 2025, from 00:00-23:59 WIT showed 111 eruption/explosion earthquakes with amplitudes of 6-28 millimeters and earthquake durations of 38.28-75.65 seconds.

Furthermore, there were 2 exhalation earthquakes with amplitudes of 3-6 millimeters and earthquake durations of 46.61-46.91 seconds, and 20 harmonic tremors with amplitudes of 4-28 millimeters and earthquake durations of 49.42-107 seconds.

PVMBG urges the public around Mount Ibu and visitors/tourists not to engage in activities within a 2-kilometer radius and a sectoral expansion of 3.5 kilometers towards the crater opening in the northern part of Mount Ibu's active crater.

Throughout 2025, MAGMA Indonesia has recorded 5,644 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,265 times), while Mount Ibu erupted 2,076 times.

(Read: Volcanic Eruption Trends in Recent Years)