Mount Semeru Erupts Again This Afternoon, Ash Column Height Around 800 Meters
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Mount Semeru in East Java erupted again on Tuesday (9/6/2026) at 11.01 WIB. Over the past week, Mount Semeru has erupted 19 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 800 meters above the summit, or 4476 meters above sea level.
The ash column appeared white to grey, with thick density drifting north and northeast. This eruption was recorded on seismograph with maximum amplitude 21 mm and duration 106 seconds.
(Read: 55 Disasters Occurred Mid September 2023, Forest Fires Dominated)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is set at Activity Level III (Alert). Seismic monitoring on June 9 2026 between 00.00-06.00 WIB recorded 14 eruption earthquakes with 10-22 mm amplitude and 62-192 second duration, plus 1 emission earthquake at 6 mm amplitude, 79 seconds long.
PVMBG warns: no activities are permitted in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public must avoid activity within 500 meters of river banks along Besuk Kobokan, as pyroclastic surges and lahars may reach up to 17 km from the peak.
Throughout 2026, MAGMA Indonesia has recorded 2461 volcanic eruptions across Indonesia. East Java's Mount Semeru is the most active with 1208 eruptions.
(Read: Nearly 5000 Natural Disasters In Indonesia During 2023, Forest Fires Dominated)
"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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