KVERT reported that on 18 and 20 December seismic activity at Karymsky was at background levels; possible explosions may have generated ash-and-gas plumes to an altitude of 3 km (9,800 ft) a.s.l. on 18 December. Analysis of satellite imagery revealed a thermal anomaly in the crater during 21-26 December and ash plumes that drifted 80 km E during 21-23 December. Ash deposits 26 km long to the SE and 9 km long to the NE were noted on 21 December. The Level of Concern Color Code remained at Orange.
Sources: Kamchatkan Volcanic Eruption Response Team (KVERT) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”