On 27 and 30 March, INSIVUMEH reported that explosions from Fuego produced ash plumes that rose to altitudes of 4.1-4.8 km (13,500-15,700 ft) a.s.l. and drifted S and SW. Some explosions were accompanied by rumbling noises, shock waves detected 10 km away, and avalanches of blocks down the W and SW flanks. Fumarolic plumes drifted NE and SW. On 30 March, incandescent material was ejected 75 m into the air. Based on analysis of satellite imagery, the Washington VAAC reported that on 31 March an ash plume drifted E.
Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Washington Volcanic Ash Advisory Center (VAAC) – “Report provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”