Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that explosive activity at Sabancaya increased compared to the previous week; explosions averaged 19 per day during 16-22 April.
Seismicity was dominated by long-period events, with a rise in signals indicating emissions.
Gas-and-ash plumes rose as high as 2.2 km above the crater rim and drifted 40 km NW, W, and SW.
The MIROVA system detected five thermal anomalies, and on 17 April the sulfur dioxide gas flux was high at 3,421 tons/day.
The report noted that the public should not approach the crater within a 12-km radius.
Sources: Instituto Geofísico del Perú (IGP),Instituto Geológico Minero y Metalúrgico (INGEMMET)