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Sinabung eruption forces flight suspensions, mass evacuations in Indonesia

Mount Sinabung in North Sumatra has erupted, prompting authorities to evacuate thousands of residents and suspend air operations in the region. Educational institutions have also halted in-person classes as a precautionary measure.

LSN Singapore · 2 September 2026

Sinabung eruption forces flight suspensions, mass evacuations in Indonesia

Mount Sinabung, one of Indonesia's most active volcanoes, has entered a new eruptive phase, triggering widespread disruptions across North Sumatra. Regional airports have suspended flight operations due to ash clouds and hazardous atmospheric conditions, affecting transportation networks in the area.

Local authorities have initiated mass evacuations as a safety precaution, with thousands of residents relocated from communities in the volcano's vicinity. The evacuation operations are ongoing as monitoring of the volcanic activity continues.

Beyond transportation and residential impacts, the eruption has extended disruptions to the education sector. Multiple schools across the affected region have suspended in-person instruction, shifting to alternative learning arrangements as air quality concerns persist.

The volcanic activity follows Sinabung's history of significant eruptive events. Authorities have established exclusion zones and are maintaining heightened alert levels as they monitor the volcano's behaviour and assess risks to surrounding communities.