Mount Ibu Erupts Again Tonight (Monday, July 28, 2025)

Mount Ibu in North Maluku erupted again on Monday (July 28, 2025) at 00:30 WIT. In the last week, Mount Ibu only erupted once.

Citing 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 200 meters above the peak (1,525 meters above sea level).

The observed ash column was gray with thick intensity towards the northwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 53 seconds.

(Read: 2 Thousand Natural Disasters in Indonesia in 2024, Floods Dominate)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ibu is at Level II (Alert). Seismicity observations on July 28, 2025, from 00:00-23:59 WIT showed 119 eruption earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 33-72 seconds.

Subsequently, there was 1 exhalation earthquake with an amplitude of 6 millimeters and an earthquake duration of 52 seconds, and 20 harmonic earthquakes with amplitudes of 2-28 millimeters and earthquake durations of 31-121 seconds.

PVMBG advises 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 5,343 volcano eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,145 times), while Mount Ibu erupted 1,976 times.

(Read: Floods and Extreme Weather, Most Frequent Natural Disasters in Indonesia until Early August 2023)