Karangetang volcano (Sangihe Islands, Indonesia), activity update:
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.
Source: VSI and GVP/USGS Weekly Volcanic Activity Report 19-25 July 2006