Sheveluch Volcano. Monitoring
Aviation Color Code:
ORANGE 
Current State: The explosive-extrusive eruption of the volcano continues, accompanied by powerful gas-steam activity; a new block of lava continues to grow in the northern part of the lava dome. The explosive event with ash removal up to 4 a.s.l. occurred on 23 June (start at 19:10 UTC). Satellite data by KVERT showed a thermal anomaly on the volcano all week; on 23-24 June, the ash cloud moved 220 km to the southwest of the volcano. The ash cloud formed during the explosive event on 17 June (start at 16:00 UTC) was detected on 18 June at 1,400 km northeast of the volcano. 
Danger Prognosis for Aviation: The explosive-extrusive eruption of the volcano continues. Ash explosions up to 12 km (39,400 ft) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.