2012-13 Eruptions An increase in activity occurred at Tungurahua volcano, Ecuador in August 2012. Between 1500-1600 hr (local time, 20th August 2012) there were 16 large explosions. The explosions were heard in nearby villages. During the evening of 20th August there were constant avalanches of incandescent material rolling 1.5 km down the flank. At 1411 hr (local time) on the 21st August an explosive eruption produced an ash column 4 km high and a pyroclastic flow which travelled 2.5 km down Achupashal creek. Thermal images identified continuous emission of incandescent material on the upper flanks of the volcano. The eruptions caused the evacuation of 110 families.