Jakarta, Sept. 27 -- Indonesia's Mount Merapi in Central Java and Yogyakarta released 88 lava avalanches between Sept. 19 and 25, with flows reaching up to two kilometers, the country's disaster agency said on Saturday.

Abdul Muhari, head of the National Disaster Management Authority's (BNPB) data and information center, said the avalanches flowed in three directions: five times along the Bebeng River, 37 along the Krasak, and 46 along the Sat/Putih.

The Geological Disaster Technology Research and Development Center (BPPTKG) reported minor changes on Merapi's southwest lava dome due to growing volume and avalanche activity, while the central dome showed little change.

Aerial photos taken on Aug. 25 measured the southwest dome at 4,179,...