Mount Semeru Erupts Again Tonight (Monday, April 27, 2026)
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Mount Semeru in East Java erupted again on Monday (April 27, 2026) at 00:20 WIB. In the past week, Mount Semeru has only erupted once.
Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached None meters above the peak or None meters above sea level.
Eruption visuals were not observed. The eruption of Mount Semeru was still ongoing when this report was made.
(Read: Trend of Volcanic Eruptions in Recent Years)
According to the MAGMA Indonesia volcanic activity report, Mount Semeru's activity level is at Level III (Alert). Earthquake observations on April 27, 2026 from 18:00-23:59 WIB showed 21 eruption/explosion earthquakes with amplitudes of 13-22 millimeters and durations of 55-157 seconds.
Additionally, there was 1 emission earthquake with an amplitude of 5 millimeters and duration of 49 seconds, as well as 2 harmonic earthquakes with amplitudes of 11-13 millimeters and durations of 135-206 seconds.
PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, within 13 kilometers of the peak (eruption center). Beyond that distance, residents should avoid activities within 500 meters of the riverbank along the Besuk Kobokan due to the potential for hot cloud expansion and lava flows up to 17 kilometers from the peak.
Throughout 2026, MAGMA Indonesia has recorded 1,687 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions with 871 events.
(Read: Indonesia Has the Most Active Volcanoes in the World)
"Disclosure: This is an AI-generated translation of the original article. We strive for accuracy, but please note that automated translations may contain errors or slight inconsistencies."
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