Mount Ibu Erupts Again This Morning (Saturday, October 18, 2025)

Mount Ibu in North Maluku erupted again on Saturday (October 18, 2025) at 05:41 WIT. In the last week, Mount Ibu has erupted 32 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column was observed to be approximately 500 meters above the peak or 1,825 meters above sea level.

The ash column was observed to be white to gray with thick intensity towards the southeast. The eruption was recorded on a seismograph with a maximum amplitude of 25 millimeters and a duration of 51.94 seconds.

(Read: Floods, The Most Common Natural Disaster in Indonesia as of September 2025)

According to the MAGMA Indonesia volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on October 18, 2025, at 00:00-23:59 WIT showed 91 eruption/explosive earthquakes with amplitudes of 17-28 millimeters and earthquake durations of 33-71 seconds.

Subsequently, 1 exhalation earthquake with an amplitude of 10 millimeters and an earthquake duration of 49 seconds, and 20 harmonic tremors with amplitudes of 2-15 millimeters and earthquake durations of 31-235 seconds were recorded.

PVMBG urges the public around Mount Ibu and visitors/tourists not to carry out activities within a radius of 2.0 kilometers 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 6,698 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,635 times), while Mount Ibu erupted 2,404 times.

(Read: Incidents of Flood Disasters in Indonesia Increased in the Period 2008-2025)