A major eruption started at Russia’s Sheveluch volcano on June 14, 2017. propelling ash to a height of 12 km (39 360 feet) above sea level.
KVERT warned that explosions up to 15 km (49 200 feet) could occur at any time. The Aviation Color Code was raised from Orange to Red.
Sheveluch volcano (also spelled Shiveluch) is one of Kamchatka’s largest and most active volcanoes.
Thanks to Don Brown and Guy Wilson for this link