Warning! Mount Semeru Erupts Again Tonight (Thursday, March 19, 2026)

Mount Semeru in East Java erupted again on Thursday (March 19, 2026) at 7:00 PM WIB. In the past week, Mount Semeru has erupted 39 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column is around None meters above the peak or None meters above sea level.

Eruption visuals were not observed. The eruption of Mount Semeru was still ongoing when this report was made.

(Read: West Kalimantan Produces the Most CO2 Emissions from Forest and Land Fires Until July 2023)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Semeru is at Level III (Standby). Earthquake observations on March 19, 2026 from 12:00 PM to 6:00 PM WIB showed 16 eruption/explosion earthquakes with an amplitude of 10-22 millimeters and a duration of 86-187 seconds.

Then, 6 blast earthquakes with an amplitude of 2-8 millimeters and a duration of 48-94 seconds, as well as 2 distant tectonic earthquakes with an amplitude of 25 millimeters, s-p time of 13-37 seconds, and a duration of 38-113 seconds.

PVMBG advises against any activities in the southeast sector along the Besuk Kobokan, within 13 kilometers of the peak (eruption center). Beyond that distance, residents are advised not to carry out activities within 500 meters of the riverbank along the Besuk Kobokan due to the potential for being affected by expanding hot clouds and lava flows up to 17 kilometers from the peak.

In 2026, MAGMA Indonesia has recorded 1,093 volcanic eruptions across Indonesia. Mount Semeru in East Java has the most eruptions with 588 events.

(Read: NTT Has Been Hit by Forest and Land Fires for the Last 10 Years, BMKG Urges to Increase Alertness)