Mount Semeru Erupted Again This Morning (Thursday, 4 June 2026)
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Mount Semeru in East Java erupted again on Thursday (4/6/2026) at 06:31 WIB. Over the past week, Mount Semeru 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 approximately 700 meters above the summit (4,376 meters above sea level).
The ash column appeared white to grey with thick intensity, drifting southwest. This eruption was recorded on seismographs with maximum amplitude 22 mm and duration 143 seconds.
(Read: 2022 Public Flat Recipients: Most Are Natural Disaster Victims)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru is currently at Activity Level III (Alert Status). Seismic monitoring between 00:00-06:00 WIB on 4 June 2026 recorded 16 eruption earthquakes with 12-22 mm amplitude and 51-142 second duration.
Additionally, 3 degassing earthquakes (3-7 mm amplitude, 47-49 second duration) and 1 distant tectonic earthquake (34 mm amplitude, 20 second S-P interval, 78 second duration) were detected.
PVMBG prohibits all activities in the southeast sector along Besuk Kobokan up to 13 km from the summit. Outside this zone, residents must avoid activity within 500 meters of Besuk Kobokan river banks, as pyroclastic surges and lahars may reach up to 17 km from the crater.
During 2026 so far, MAGMA Indonesia has recorded 2,318 volcanic eruptions across Indonesia. East Java's Mount Semeru accounts for the highest number with 1,164 eruptions.
(Read: Count of Moderately Damaged Houses Due to Natural Disasters in Indonesia 2015-2024)
"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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