INSIVUMEH reported that 4-12 explosions were recorded per hour during 17-23 February at Fuego, generating ash plumes as high as 1.1 km above the crater rim.
Shock waves rattled buildings around the volcano.
Block avalanches descended the Ceniza (SSW), Seca (W), Trinidad (S), Taniluyá (SW), Las Lajas (SE), and Honda drainages, often reaching vegetated areas.
Ashfall was reported on most days in several areas downwind including Morelia (9 km SW), Panimaché I (8 km SW), Santa Sofía (12 km SW), El Porvenir (8 km ENE), and San Pedro Yepocapa (8 km NW).
Notably, on 17 February ash plumes drifted as far as 50 km E, causing ashfall in local communities as well as in Guatemala City (city center is about 40 km ENE).
Ash plumes drifted 40 km SW on 18 February.
Curtains of old ash deposits remobilized by strong winds were observed during 19-21 February.
Incandescent material was ejected 100-400 m above the summit during 19-22 February.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)