Alert! 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 23:47 WIB. Over the past week, Mount Semeru has erupted 45 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 crater, or 4376 meters above sea level.
The ash column appeared white to grey with thick intensity, drifting southwest. This eruption was recorded on seismograph with maximum amplitude 22 mm and 108 seconds duration.
(Read: 5.3 M Magnitude Earthquake Shakes 17 Km West of Pasuquin,)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert). Seismic monitoring on 11 June 2026 between 12:00-18:00 WIB recorded 19 eruption earthquakes with 15-22 mm amplitude and 57-131 second duration.
Additionally, 3 gas emission earthquakes (4 mm amplitude, 33-42 second duration), plus 2 distant tectonic earthquakes (6-20 mm amplitude, 22-25 sec S-P interval, 74-116 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 activity is forbidden within 500 meters of riverbanks along Besuk Kobokan, as areas up to 17 km from the peak remain at risk of pyroclastic flows and lahar hazards.
For 2026, MAGMA Indonesia has logged 2552 volcanic eruptions nationwide; Mount Semeru accounts for the highest total with 1234 eruptions.
(Read: Latest Five Earthquakes Recorded by BMKG (Saturday, 19 July 2025 18:25:55 WIB))
"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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