Mount Semeru, located in East Java, has once again shown significant volcanic activity after reportedly erupting on Tuesday (14/7/2026) at 00:32 WIB. According to a report by the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, an ash column was observed rising up to 1,000 meters above the peak, or approximately 4,676 meters above sea level.
The volcanic material was observed to be white to gray in color with moderate intensity, leaning towards the southwest. This phenomenon adds to the long record of the volcano's activity, considering that in the past week, Mount Semeru has erupted ten times.
To date, the activity status of Mount Semeru remains at Level III or Alert. Seismic monitoring data for the period of July 14, 2026, from 18:00 to 23:59 WIB recorded 17 eruption earthquakes with amplitudes ranging from 11 to 22 millimeters, as well as several avalanche and gust earthquakes.
Regarding safety risks, PVMBG has issued a stern warning for the public not to conduct any activities in the southeastern sector along Besuk Kobokan within a 13-kilometer radius from the eruption center. Additionally, residents are prohibited from activities within 500 meters of the riverbanks along Besuk Kobokan to avoid the threat of hot clouds and lahar flows that could expand up to 17 kilometers at any time.
Nationally, Mount Semeru is recorded as the volcano with the most intense eruptive activity in Indonesia throughout 2026. Out of a total of 3,161 volcanic eruptions recorded by MAGMA Indonesia this year, 1,395 of them originated from Mount Semeru.
