Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that explosions at Sabancaya averaged 17 per day during 3-9 September.
Hybrid earthquakes were infrequent and of low magnitude.
Gas-and-ash plumes rose as high as 3.5 km above the crater rim and drifted 50 km SW, E, and NE.
The MIROVA system detected seven thermal anomalies, and on 3 September the sulfur dioxide gas flux was high at 2,380 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)