Mount Ibu Erupts Again Tonight (Saturday, September 20, 2025)

Mount Ibu in North Maluku erupted again on Saturday (September 20, 2025) at 20:42 WIT. In the last week, Mount Ibu has erupted 29 times.

Citing 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 around 700 meters above the peak (2,025 meters above sea level).

The ash column was observed to be gray with thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 49 seconds.

(Read: Number of Flooded Houses in Jabodetabek on July 6, 2025, Tangsel Most)

According to MAGMA Indonesia''s volcano activity report, Mount Ibu''s activity level is at Level II (Alert). Seismic observations on September 20, 2025, at 00:00-23:59 WIT showed 53 eruption tremors/earthquakes with amplitudes of 17-28 millimeters and a duration of 27-76 seconds.

Subsequently, 1 exhalation tremor with an amplitude of 10 millimeters and a duration of 44 seconds, and 17 harmonic tremors with amplitudes of 2-18 millimeters and a duration of 25-236 seconds occurred.

PVMBG urges the public around Mount Ibu and visitors/tourists not to carry out 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 6,183 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,464 times) while Mount Ibu erupted 2,269 times.

(Read: Jakarta Roads Still Flooded (July 9, 2025, 09:00 WIB))