Mount Semeru Erupted Again This Morning (Sunday, 17 May 2026)
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Mount Semeru in East Java erupted again on Sunday (17/5/2026) at 07.44 WIB. Over the past week, Mount Semeru has erupted 50 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app, the observed ash column reached approx 500 meters above the summit (4,176 meters above sea level).
The ash column appeared white to grey, thick, drifting north and northwest. This eruption was recorded on seismograph with maximum 22 mm amplitude and 118 second duration.
(Read: Indicated Forest & Land Fire Area in Central Kalimantan Province Over The Last Decade)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert). Seismic monitoring between 00.00–06.00 WIB 17 May 2026 recorded 19 eruption earthquakes with 10–22 mm amplitude and 85–189 second duration.
Additionally, 3 degassing earthquakes (3–4 mm amplitude, 65–80 sec duration) and 1 harmonic tremor (4 mm amplitude, 328 sec duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public activities are forbidden within 500 m of river banks along Besuk Kobokan, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
For 2026 up to this date, MAGMA Indonesia logged 2,012 volcanic eruptions nationwide. Mount Semeru (East Java) recorded the highest count with 1,024 eruptions.
(Read: Indicated Forest & Land Fire Area in East Kalimantan Up To June 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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