Alert! Mount Semeru Erupts Again Tonight (Saturday, 30 May 2026)
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Mount Semeru in East Java erupted again on Saturday (30/5/2026) at 22:15 WIB. Over the past week, Mount Semeru has erupted 49 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached approximately 1,000 meters above the summit (4,676 meters above sea level).
The ash column appeared white to grey, with thick intensity drifting westwards. This eruption was recorded on seismographs with a maximum amplitude of 22 millimetres and lasted 113 seconds.
(Read: Dozens of Neighbourhood Units in Jakarta Affected by Floods (5 May 2026))
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Alert Level III. Seismic monitoring on 30 May 2026 between 12:00–18:00 WIB recorded 17 eruption earthquakes with 15–22 mm amplitude and 57–171 second duration.
Additionally, 1 rockfall earthquake (2 mm amplitude, 128 seconds) and 2 emission earthquakes (3–5 mm amplitude, 32–73 seconds) were detected.
PVMBG advises against all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, residents must avoid activity within 500 metres of river banks along Besuk Kobokan, as pyroclastic surges and lahars may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia has logged 2,241 volcanic eruptions nationwide. Mount Semeru accounts for the highest number with 1,125 recorded eruptions.
(Read: Distribution of Fatalities from Floods & Landslides in West Sumatra (9 December 2025))
"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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