Mount Semeru Erupted Again This Afternoon (Thursday, 22 October 2026)
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Mount Semeru in East Java erupted again on Thursday (22/10/2026) at 13:19 WIB. Over the past week, Mount Semeru has erupted 8 times.
According to eruption data from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached approximately 500 meters above the summit (4,176 meters above sea level).
The ash column appeared grey, thick, drifting southwest and west. This eruption was recorded on seismographs with maximum amplitude 20 mm and duration 104 seconds.
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Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert Status). Seismic monitoring on 22 October 2026 between 06:00-12:00 WIB recorded 23 eruption earthquakes with 12-25 mm amplitude and 72-186 second duration.
Additionally, 2 rockfall earthquakes (8-9 mm amplitude, 58-81 seconds) and 1 gas emission earthquake (9 mm amplitude, 53 seconds) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan up to 13 km from the summit. Beyond this zone, residents must avoid all activity within 500 meters of Besuk Kobokan river banks, as pyroclastic surges and lahars may reach up to 17 km from the peak.
Throughout 2026, MAGMA Indonesia logged 5,234 volcanic eruptions across Indonesia. East Java's Mount Semeru recorded the highest activity with 2,021 eruptions.
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"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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