Based on seismic activity and visual observations, on 15 June CVGHM reiterated that the Alert Level remained at 2 (on a scale of 1-4). Visitors and tourists were not permitted to go within a 1.5 km radius of Sirung. [moins]

On 8 May a 3-hour long eruption took place at Sirung volcano. The eruption was accompanied by loud sounds and incandescent tephra observed rising 10 m above the crater. The explosion created an ash plume that reached 3.5 km altitude and drifted to the north, producing ashfall up to 4 mm thick near the crater.
During 9-12 May white plumes rose 30-50 m above the crater. A sulfur odor was reported in areas up to 3 km away on 12 May. That same day CVGHM raised the Alert Level to 3 (on a scale of 1-4) and recommended that visitors not approach the volcano within a 2.5 km radius. [moins]