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View all search resultsEast Java's Semeru volcano erupts, alert level raised to highest
The volcano spewed ash clouds as high as 2 km (1 mile) above the mountain's peak, the agency said, adding residents should keep to a 2.5 km distance away due to risks.
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An aerial picture shows a pyroclastic flow during the eruption of Mount Semeru in Lumajang, East Java, on November 19, 2025. (AFP/Agus Hariyanto)
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emeru volcano erupted on Wednesday and the country's volcanology agency increased the alert level of Java Island's tallest mountain to the highest.
The volcano spewed ash clouds as high as 2 km (1 mile) above the mountain's peak, the agency said, adding residents should keep to a 2.5 km distance away due to risks.
Semeru, more than 3,600 metres (12,000 feet) high, is one of Indonesia's nearly 130 active volcanoes.
"The public is advised not to engage in activities within an 8 kilometre (5 mile) radius of the crater or peak of Mount Semeru due to the risk of being struck by ejected rocks," head of Energy and Mineral Resources' Geological Agency Muhammad Wafid said in a statement.
The national disaster agency said the plume of ash had risen as far as 13 kilometres (eight miles) into the air.
Its spokesman Abdul Muhari said at least 300 villagers living near the volcano have been evacuated to two temporary shelters. There were no immediate reports of casualties.
The geological agency also said that seismic activity at Mount Semeru remained high.
Authorities at Ngurah Rai airport in Bali said flight schedules were operating as usual so far.
An eruption by Semeru in 2021 killed more than 50 people and damaged more than 5,000 homes, forcing almost 10,000 people to seek refuge.
