During 24-31 July, volcanic and seismic activity increased at Kerinci. An ash plume rose 100-600 m above the crater rim and drifted W. Ash was deposited up to 1 cm thick and as far away as 3 km from the crater. There was an increase in volcanic earthquakes during the report week in comparison to the previous week. Visitors were advised not to climb to the volcano's peak until activity decreased.

Geological Summary. Gunung Kerinci in central Sumatra forms Indonesia's highest volcano and is one of the most active in Sumatra. It is capped by an unvegetated young summit cone that was constructed NE of an older crater remnant. There is a deep 600-m-wide summit crater often partially filled by a small crater lake that lies on the NE crater floor, opposite the SW-rim summit. The massive 13 x 25 km wide volcano towers 2400-3300 m above surrounding plains and is elongated in a N-S direction. Frequently active, Kerinci has been the source of numerous moderate explosive eruptions since its first recorded eruption in 1838.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)