Warning! Mount Semeru Erupted Again Tonight (Thursday, 1 October 2026)
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Mount Semeru in East Java erupted again on Thursday (1/10/2026) at 00:43 WIB. Over the past week, this volcano has erupted 31 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 700 meters above the peak, or 4376 meters above sea level.
The ash column appeared white to grey with moderate intensity, drifting northwards. The eruption was ongoing at the time this report was published.
Mount Semeru activity status is set at Level III (Alert). Seismic monitoring between 18:00-23:59 WIB on 1 October 2026 recorded 37 eruption earthquakes, 2 collapse earthquakes and 1 emission earthquake.
PVMBG prohibits all activities 13 km from the peak along the Kobokan river valley, and no activities within 500 m of the river banks due to pyroclastic flow and lahar hazards up to 17 km from the peak.
For 2026, MAGMA Indonesia logged a total of 4878 volcanic eruptions nationwide; Mount Semeru recorded the highest count with 1897 eruptions.
"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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