Mount Semeru in Lumajang Regency, East Java, continues to show fluctuating volcanic activity. Standing at Level III (Alert) status, the highest mountain on Java Island has continued to erupt over the past few days, triggering heightened vigilance among local residents and disaster management authorities.
The Center for Volcanology and Geological Hazard Mitigation (PVMBG), through volcano observer Mukdas Sofian, emphasized that the southeastern zone along the Besuk Kobokan River basin, up to 13 kilometers from the eruption center, is an off-limits area for all civilian activities. Additionally, the public is advised to stay at least 500 meters away from the riverbanks along Besuk Kobokan to avoid the risk of pyroclastic flows that could reach distances of up to 17 kilometers.
The latent danger of this volcanic activity became evident after a sand miner named Veri Irawan was injured while operating under the Gladak Perak Bridge. The victim suffered severe burns after being struck by a cliff of sand material that retained heat underneath, despite its surface appearing cool. The Acting Chief of BPBD Lumajang, Isnugroho, urged miners to stop operating at night because the volcano's current condition is highly unpredictable.
To date, Mount Semeru's eruption intensity averages twice per hour, with the volcanic ash column often obscured by fog. Despite the tangible eruption threat, economic activity in the Pronojiwo district is reported to be continuing normally. Local residents are considered to have good preparedness due to prior disaster response training.
PVMBG reiterated the importance of adhering to safe zoning. Residents were reminded to remain vigilant against pyroclastic flows, lava falls, and lahar flows along rivers originating from Semeru's summit, particularly Besuk Bang, Besuk Kembar, and Besuk Sat, to prevent further casualties.
