Mount Semeru Erupts Again This Morning (Tuesday, April 28, 2026)
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Mount Semeru in East Java erupted again on Tuesday (April 28, 2026) at 05.42 WIB. In the last week, Mount Semeru has erupted 11 times.
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 900 meters above the peak (4,576 meters above sea level).
The observed ash column was white to gray with moderate intensity towards the southwest. The eruption of Mount Semeru was still ongoing when this report was made.
(Read: Jakarta and Medan are the World's Most Polluted Cities, Here's Their Air Quality Trend)
According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Alert). Seismic observations on April 28, 2026 from 00.00-06.00 WIB showed 18 eruption earthquakes with an amplitude of 12-22 millimeters and a duration of 64-96 seconds.
Then, 1 blast earthquake with an amplitude of 6 millimeters and a duration of 55 seconds, as well as 4 harmonic earthquakes with an amplitude of 9-13 millimeters and a duration of 104-179 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 are advised not to carry out activities within 500 meters of the riverbank along the Besuk Kobokan due to the potential for being affected by expanding pyroclastic flows and lahar flows up to 17 kilometers from the peak.
Throughout 2026, MAGMA Indonesia has recorded 1,705 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 881 events.
(Read: Bangladesh Has the World's Worst Air Quality, How About Indonesia?)
"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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