Mount Semeru Erupts Again Tonight (Thursday, 11 June 2026)
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Mount Semeru in East Java erupted again on Thursday (11/6/2026) at 20:05 WIB. Over the past week, Mount Semeru has erupted 44 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 700 meters above the summit (4,376 meters above sea level).
The ash column was observed white to grey, thick in intensity, drifting southwest. This eruption was recorded on seismographs with maximum 22 mm amplitude, lasting 126 seconds.
(Read: 175 Disaster Events Recorded In Indonesia Early 2026, Floods Most Frequent)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru status is set at Level III (Alert). Seismic monitoring on 11 June 2026 between 12:00-18:00 WIB recorded 19 eruption earthquakes (15-22 mm amplitude, 57-131 second duration).
Additionally: 3 exhalation earthquakes (4 mm amplitude, 33-42 second duration); 2 distant tectonic earthquakes (6-20 mm amplitude, 22-25s S-P interval, 74-116 second duration).
PVMBG prohibits all activity in the southeast sector along Besuk Kobokan up to 13 km from the summit. Outside this zone, no activity is permitted within 500 meters of Besuk Kobokan river banks, as pyroclastic flows and lahar may reach up to 17 km from the peak.
For 2026 up to this date, MAGMA Indonesia logged 2,549 volcanic eruptions nationwide. Mount Semeru (East Java) recorded the highest activity with 1,233 eruptions.
(Read: Damaged House Count: Sumatra Floods & Landslides (17 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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