Shiveluch, Russia

KVERT reported that seismic activity at Shiveluch was at background levels during 21-28 February. Based on interpretations of seismic data, ash plumes likely rose to an altitude of 5.5 km (18,000 ft) a.s.l. Lava flows continued to be active on the S and N flanks. Fumarolic activity was seen during 20-21 and 23-25 February. During 24-25 February, pilots reported dark plumes near the volcano that rose to altitudes of 5 km (16,400 ft) a.s.l. Analysis of satellite imagery revealed a daily thermal anomaly on the lava dome and an ash plume that drifted 40 km NNE on 25 February. The Level of Concern Color Code remained at Orange.

Based on information from KEMSD and analysis of satellite imagery, the Tokyo VAAC reported that eruptions on 25 February and 4 March produced plumes that rose to altitudes of 4.9-5.8 km (16,000-19,000 ft) a.s.l. The plumes drifted W on 25 February.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”

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