Karangetang volcano is still active as news reports suggest. An ash plume was observed rising to an altitude of 1.9 km (6,000 ft) a.s.l. on 27 March. Pyroclastic flows may have occurred the next day.

According to the Darwin VAAC, an eruption at Karangetang on 24 November produced a small ash plume observed on satellite imagery that reached an altitude of 3 km (10,000 ft) a.s.l.

During 7-13 August, lava flows from Karangetang advanced E toward the Batu Awang river. Incandescent rockfalls originating from lava flow fronts were also observed. The Alert Level remained at 3.

On 2 August, the Alert Level at Karangetang was raised to 4, the highest level.

During 1-5 August, white plumes reached heights of 50-300 m (164-984 ft) above the summit (6,000-6,800 ft a.s.l.). Lava flows advanced hundreds of meters to over a kilometer E toward the Batu Awang river and S towards the Keting river during the reporting period.
Incandescent rockfalls originating from the summit and ends of the lava flows traveled hundreds of meters E toward the Kahetang and Batu Awang rivers and S towards the Keting and Batang rivers.

On 5 August, the Alert level was lowered to 3.

Fog limited clear views of summit activity at Karangetang during the reporting period. Lava flows were observed during 27-31 July moving E toward the Kahetang and Batu Awang rivers at a maximum distance of ~750 m from the vent. Rockfalls traveled up to 2 km towards the Keting River. On 31 July, gas plumes reached a maximum height of 200 m above the summit (or ~6,500 ft a.s.l.).
According to news reports, between 3,000 and 4,000 people from five villages were evacuated on 27 and 28 July due to advancing lava flows and reports of lahars. The news also noted that on 29 July, about 1,300 people remained in shelters.

The Alert Status of Karangetang was raised on 22 July from 3 to 4 (on a scale of 1-4) due to an increase in eruptive activity since the last reportingperiod. On 20 July, lava flows were observed moving E toward the Kahetang and Batu Awang rivers at a maximum distance of 1.8 km from the vent, towards the Hamstring river at unknown location and distance, and S towards the Bahembang river at a maximum distance of 2 km. On 21 July, a pyroclastic flow originating
from the upper S flank traveled 2.5 km toward the Stone river (unknown direction) and was followed by lava flows that traveled toward the Hamstring river and E towards the Kahetang river at a maximum distance of 2 km. A "thin white smoke" was seen at a height of ~350 m above the summit (7,000 ft a.s.l.). Lava flows traveled a maximum distance of ~2.3 km towards the Hamstring river and S towards the Bahembang river during 22-23 and 25 July.

Karangetang has been moderately active during the past months, frequently producing small to medium-siyed ash explosions. Based on a pilot observation, the Darwin VAAC reported that on 30 May, 2005, ash from Karangetang was drifting eastwards from Karangetang volcano at a height below 3 km (10,000 ft) a.s.l. The plume was not visible on satellite imagery.