Indonesia is facing another natural hazard as Mount Sinabung in North Sumatra erupted on Monday (Aug 31), sending a thick column of volcanic ash approximately 3.5km above the volcano’s summit.
The eruption took place in Karo Regency, where Mount Sinabung remains under an Alert Level II classification. Authorities have urged residents, visitors and tourists to stay away from designated danger zones around the volcano as monitoring continues.
According to Indonesia’s Centre for Volcanology and Geological Hazard Mitigation (PVMBG), the eruption began at about 10.17am local time. A dense, dark column of ash was observed rising from the volcano before drifting towards the east and south-east.
The latest activity comes as parts of Indonesia are also dealing with worsening forest fires and haze, adding another environmental concern for communities in affected areas.
Authorities Warn Residents And Tourists To Keep Away
PVMBG has advised members of the public not to enter villages that have previously been relocated because of volcanic risks.
Authorities have also established restricted areas around Mount Sinabung, including a three-kilometre radius from the volcano’s summit. A wider sectoral exclusion zone extending 4.5km towards the south and south-east is also in place.
The restrictions are intended to reduce the risk of people being exposed to volcanic materials and other hazards that can occur during periods of increased activity.
Residents and tourists in the wider Karo area have been encouraged to follow official instructions and avoid entering areas that have been identified as unsafe.
Risk Of Volcanic Mudflows Also Highlighted
While the eruption sent ash several kilometres into the atmosphere, authorities are also monitoring the possibility of volcanic mudflows.
Residents living near rivers that originate from Mount Sinabung have been told to remain vigilant. Heavy rainfall can potentially mobilise volcanic material deposited around a volcano, creating fast-moving flows through river channels.
Such hazards can affect areas beyond the immediate exclusion zone, making continued monitoring particularly important for communities downstream.
Indonesia is one of the world’s most volcanically active countries because it sits along the Pacific Ring of Fire. The country is home to numerous active volcanoes, and volcanic eruptions can create a range of risks, including ashfall, lava flows, lahars and other volcanic hazards.
Mount Sinabung Remains At Alert Level II
Mount Sinabung’s current status remains at Level II, or Alert, under Indonesia’s volcanic monitoring system.
The volcano, located in North Sumatra, has experienced significant periods of activity in recent years. Its eruptions have previously prompted evacuations and restrictions around nearby communities.
The latest eruption highlights the importance of Indonesia’s volcano monitoring and disaster preparedness systems, particularly for residents living close to active volcanic centres.
Authorities will continue observing Mount Sinabung’s activity and assessing whether further measures are required. Residents and visitors have been advised to rely on official updates rather than entering restricted areas.
For tourists planning trips to North Sumatra, checking the latest volcanic activity and local travel advisories before visiting areas around Mount Sinabung is particularly important.
The eruption also serves as a reminder that natural disaster risks can change quickly in volcanic regions, even when communities are accustomed to living near active mountains.