Mount Semeru erupted once more. This major event occurred on Monday, February 9, 2026. The eruption began at 09:15 WIB. It was the fourth eruption in just one week.
This ongoing volcanic activity places Mount Semeru at Alert Level III. The Center for Volcanology and Geological Hazard Mitigation (PVMBG) monitors the volcano closely.
Intense Seismic Activity
Seismic observations reveal significant unrest. From midnight to 6 AM on February 9, 2026, PVMBG recorded 30 eruption/explosion earthquakes. Additionally, nine collapse earthquakes occurred. One emission earthquake was also noted. These readings indicate a highly active volcano.
Earlier on the same day, at 05:50 WIB, another eruption took place. This eruption sent an ash column 500 meters high. The ash plume moved towards the northeast. PVMBG recorded this event with a maximum seismograph amplitude of 22 millimeters.
Furthermore, an eruption was reported at 18:32 WIB on February 9, 2026. This event produced an ash column reaching 900 meters. The ash column showed a moderate intensity. It drifted northward.
Safety Warnings Issued
PVMBG issues strict safety warnings. Residents must avoid certain areas. This includes the southeast sector along Besuk Kobokan. They should stay clear up to 13 kilometers from the eruption center.
Beyond this primary danger zone, precautions remain. People should not approach riverbanks along Besuk Kobokan. This applies within 500 meters of the banks. These areas face risks from hot clouds and lava flows. These hazards can extend up to 17 kilometers from the peak.
Volcanic Hazards and Potential Impacts
Mount Semeru’s activity poses several dangers. Hot clouds and lava flows are significant threats. Ashfall can also impact surrounding areas.
Volcanic ash can travel great distances. This reduces visibility significantly. It can disrupt air quality and transportation. Road and air travel may face severe interruptions.
During periods of heavy ashfall, people should stay indoors. Masks can help protect against ash inhalation. Limiting outdoor activities is also advised.
A Frequently Active Volcano
Mount Semeru is one of Indonesia’s most active volcanoes. It is located in East Java. In 2026 alone, MAGMA Indonesia recorded over 500 volcanic eruptions nationwide. Mount Semeru accounts for a substantial number of these events. It has erupted hundreds of times this year.
Previous major eruptions have had severe consequences. A December 2021 eruption killed over 50 people. It also damaged thousands of homes. This led to the evacuation of nearly 10,000 people. Such events highlight the volcano’s destructive potential.
Ongoing Monitoring and Alert Status
PVMBG maintains Mount Semeru’s activity level at Alert (Level III). This status reflects ongoing volcanic unrest. Continuous monitoring is essential for public safety. The Indonesian disaster management agency coordinates response efforts.
This series of eruptions makes Mount Semeru a trending topic. It represents major event news in the region. Such significant global events require constant vigilance. The community and authorities work together to manage risks. Travelers should stay informed about any travel advisories.
