Instituto Geofísico del Perú (IGP) reported that a daily average of 12 explosions occurred at Sabancaya during 11-17 May.
Gas-and-ash plumes rose as high as 2.5 km above the summit and drifted NE, E, and SE.
There were seven thermal anomalies identified in satellite data, originating from the lava dome in the summit crater.
The Alert Level remained at Orange (the second highest level on a four-color scale) and the public were warned to stay outside of a 12-km radius.
Source: Instituto Geofísico del Perú (IGP)