Sheveluch Volcano. Monitoring
Aviation Color Code:
ORANGE 
Current State: The extrusive-effusive eruption of the volcano continues, accompanied by powerful gas-steam activity; a new block of low-viscosity lava continues to grow in the northern part of the lava dome. Satellite data by KVERT showed a thermal anomaly on the volcano all week. 
Danger Prognosis for Aviation: The extrusive-effusive 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.