Volcanologists on Paramushir Island observed explosions during 20-23 September. Ash plumes rose up to 3.5 km a.s.l. and drifted SE, E, and NE. A thermal anomaly over the volcano was visible in satellite data on 21 and 22 September. The Aviation Color Code remained at Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)