Mount Semeru, located in East Java, showed an increase in volcanic activity again on Tuesday (14/7/2026) morning. Based on observations by the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the eruption occurred precisely at 06:29 WIB.
This eruption produced a thick column of white-to-gray ash rising 800 meters above the summit, or approximately 4,476 meters above sea level. The volcanic material was observed moving toward the northeast and east. This eruptive activity was recorded on the seismogram with a maximum amplitude of 19 millimeters and a duration of 87 seconds.
PVMBG stated that Mount Semeru's status currently remains at Level III (Alert/Siaga). Monitoring data for the period from 00:00 to 06:00 WIB on the same day recorded fairly high seismic intensity, including 16 eruption earthquakes, 3 rockfall earthquakes, and 2 gust earthquakes.
As a safety precaution, the public is strictly prohibited from conducting any activities in the southeastern sector along Besuk Kobokan within a 13-kilometer radius from the eruption center. In addition, residents are advised to maintain a safe distance of 500 meters from the riverbanks along Besuk Kobokan, given the threat of pyroclastic flow expansion and lahar flows up to 17 kilometers from the crater.
MAGMA Indonesia records show that Mount Semeru is the most active volcano in Indonesia throughout 2026. As of mid-July, the volcano has recorded 1,397 eruptions, contributing significantly to the total of 3,164 volcanic eruption events across Indonesia this year.
