SERNAGEOMIN reported that although observations of Llaima were inhibited by cloud cover on 2 July, incandescence from the 1-km-long lava flow on the W flank was observed. An overflight revealed cooled blocks at the end of the lava flow and a second lava flow (on the SW flank) about 150 m S of the first. The lava flows issued from the base of a pyroclastic cone in the main crater. Observers to the W witnessed an explosion from the summit that ejected material 1 km high. The material landed on the SW flank and up to 3.5 km away on the SE flank. Vapor plumes from the main crater were seen on 3 July. An overflight on the same day revealed that the lava flow on the W flank had advanced and generated a small lahar.
On 4 July, SERNAGEOMIN characterized the eruptive style as weakly Strombolian. A small explosion from the pyroclastic cone in the main crater produced an ash plume that rose 250-400 m and drifted 50 km SE. During 4-5 July, observers reported sporadic explosions and incandescence at the summit. Fine ashfall was reported in areas nearby. On 6 July, seismicity decreased to low levels. An overflight on 7 July revealed that the lava emission rate had decreased for both flows. The lava flow on the W flank was about 1.6 km long and the flow on the SW flank was about 2 km long. Bluish gas was emitted from the main crater.
Source: Servicio Nacional de Geología y Minería (SERNAGEOMIN) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.” News clip from Reuters.