INSIVUMEH reported that explosions (1-2 per hour) from Fuego produced ash plumes to altitudes of 4.3-4.7 km (14,100-15,400 ft) a.s.l. during 15-21 April. The plumes drifted 5-8 km SW and ashfall was reported from areas downwind. The explosions produced rumbling and degassing sounds, and shock waves that rattled windows and structures 5-15 km away. The Washington VAAC reported that multiple ash plumes were visible on satellite imagery during 18-19 April and drifted mainly SW.
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.”