Alert! Mount Semeru Erupted Again This Morning (Sunday, 17 May 2026)
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Mount Semeru in East Java erupted again on Sunday (17/5/2026) at 05:37 WIB. Over the past week, Mount Semeru has erupted 49 times.
According to eruption data from the Centre for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia app, the observed ash column reached 500 metres above the peak, or 4176 metres above sea level.
The grey ash column drifted north with moderate to thick density. This eruption was recorded on seismograph with maximum amplitude 22 mm and duration 189 seconds.
(Read: 137 Natural Disaster Events Recorded Before Late January 2024, Floods Most Frequent)
Per MAGMA Indonesia volcanic activity reports, Mount Semeru remains at Activity Level III (Alert). Seismic monitoring on 17 May 2026 18:00-23:59 WIB recorded 14 eruption earthquakes (12-22 mm amplitude, 108-171 second duration).
Additionally, 1 pyroclastic fall earthquake (22 mm amplitude, 214 seconds) and 8 gas emission earthquakes (2-4 mm amplitude, 42-112 seconds) were detected.
PVMBG prohibits all activity in the southeast sector along Besuk Kobokan within 13 km of the summit. Outside this zone, public activity is forbidden within 500 m of river banks along Besuk Kobokan, as pyroclastic surges and lahar flows may reach up to 17 km from the peak.
During 2026, MAGMA Indonesia has logged 2010 volcanic eruptions nationwide. East Java's Mount Semeru is the most active with 1023 recorded eruptions.
(Read: Number of Affected & Displaced Persons From 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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