On 27 November, an eruption occurred at 5:57 a.m. local time (21:57 UTC), which generated an ash column that rose to an altitude 500 meters into the sky.[3] On 29 November, two days later, a major blast took place sending an ash column as high as 50000 ft (15.24 km) into the sky.[4]Volcanic bombs have an impact radius of about 2 km from the main crater.[5]
By 2 December, it was reported that more than 5,500 people had been evacuated from their homes near the volcano. Residents on the slopes of Mt Ile Lewotolok had been warned of potential cold lava flows, especially during periods of heavy rain, and had been advised to remain outside of a 4-kilometer radius from the crater.[6]