Lumajang, Indonesia – Mount Semeru, one of Indonesia’s most active volcanoes, erupted Friday evening, sending hot clouds cascading down its slopes and prompting authorities to issue warnings for residents in the surrounding area. The eruption, which began around 8:02 PM local time, sent a pyroclastic flow traveling as far as 4 kilometers (approximately 2.5 miles) southeast toward the Besuk Kobokan river valley, according to officials with the Lumajang Regency Disaster Management Agency (BPBD). This latest activity underscores the ongoing threat posed by Semeru, a peak that frequently experiences periods of unrest.
The initial eruption was followed by a second event at 7:25 AM Saturday, producing an ash plume that reached 1,500 meters (4,921 feet) above the summit. Seismic monitoring detected significant tremors during both eruptions, indicating continued volcanic activity. Earlier in the day, on Friday, three prior pyroclastic flows had occurred – at 10:56 AM (traveling 3 kilometers), 2:22 PM (2.5 kilometers), and 2:31 PM (2.5 kilometers) – all originating from the volcano’s peak. The Center for Volcanology and Mitigation of Geological Disasters (PVMBG) has maintained a Level III Alert status for Semeru, the second-highest level in Indonesia’s four-tiered volcanic alert system.
Mount Semeru’s Recent Eruptive Activity
The current series of eruptions began Friday, with the initial hot cloud reported by the Semeru Observation Post. The ash from the eruptions drifted north and northeast, forming a thick, gray column that rose 2,000 meters (6,561 feet) above the summit. While the eruptions have been significant, authorities report that, so far, the activity has not directly impacted residential areas, as the flows have remained distant from populated zones. However, officials are closely monitoring the situation and urging caution.
According to Isnugroho, head of the BPBD Lumajang, the volcano’s eruption was recorded by CCTV cameras monitored by the agency. He stated that the hot clouds traveled southeast towards Besuk Kobokan. The agency is working to provide updates and ensure the safety of communities in the vicinity of the volcano. The PVMBG has advised residents and visitors to refrain from any activities within a 13-kilometer (8-mile) radius of the crater in the southeast sector, particularly along the Besuk Kobokan river.
Indonesia’s Volcanic Landscape and the Ring of Fire
Indonesia is situated within the Pacific “Ring of Fire,” a region known for its intense seismic and volcanic activity. The country boasts more than 120 active volcanoes, making it one of the most volcanically active nations in the world. Mount Semeru, standing at 3,676 meters (12,060 feet) above sea level, is located on the border of Lumajang and Malang regencies in East Java province. Its frequent eruptions pose a recurring challenge for local communities and disaster management agencies.
The PVMBG has also warned people to stay away from riverbanks within 500 meters, citing the potential for lava flows and the expansion of hot clouds that could extend up to 17 kilometers from the summit. These warnings are in place to mitigate the risk of lahars – volcanic mudflows – which can be particularly dangerous and destructive. Authorities are continuing to monitor the volcano closely and assess the evolving situation.
Earlier reports indicated five separate eruptions on Friday, with ash rising to 1,000 meters, as reported by Qazinform. However, the most recent information from Antara News and BPBD Lumajang details the two main eruptions on Friday evening and Saturday morning, along with the three earlier pyroclastic flows.
As of Saturday, February 14, 2026, no major damage has been reported following the eruptions. However, the situation remains fluid, and authorities are prepared to respond to any potential escalation in volcanic activity. Residents are urged to remain vigilant and adhere to the recommendations issued by the PVMBG and local disaster management agencies.
The next official update from the Center for Volcanology and Mitigation of Geological Disasters is expected within the next 24 hours, providing further assessment of the volcanic activity and any potential changes to the alert level. Residents in the affected areas are encouraged to stay informed through official channels and heed all warnings issued by authorities.
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