Warning! Mount Ibu Erupts Again Tonight (Thursday, September 4, 2025)

Mount Ibu in North Maluku erupted again on Thursday (September 4, 2025) at 22:25 WIT. In the last week, Mount Ibu has erupted 21 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 observed reached 800 meters above the peak or 2,125 meters above sea level.

The ash column was observed to be white to 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 46.29 seconds.

(Read: BNPB Recorded 52 Natural Disasters in Mid-August 2023, Most Numerous Were Forest and Land Fires)

According to MAGMA Indonesia''s volcanic activity report, Mount Ibu''s activity level is at Level II (Alert). Seismicity observations on September 4, 2025, from 00:00-23:59 WIT showed 114 eruption tremors with amplitudes of 16-28 millimeters and durations of 36-78 seconds.

Subsequently, there were 3 exhalation tremors with amplitudes of 6-10 millimeters and durations of 34-50 seconds, and 15 harmonic tremors with amplitudes of 2-28 millimeters and durations of 33-129 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 5,963 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,387 times), while Mount Ibu erupted 2,185 times.

(Read: Hundreds of Natural Disasters Until Early April 2024, Floods Were Most Numerous)