KVERT reported that the explosive eruption that began at Karymsky on 3 April continued through 11 April.
A thermal anomaly was visible in satellite images during 2-6 April; weather conditions obscured views on other days.
The 3 April explosion generated an ash plume that rose to 8.5 km (27,900 ft) a.s.l.
and drifted 255 km NE.
At 1745 on 11 April explosions produced ash plumes that rose to 4 km (13,100 ft) a.s.l.
and drifted at least 65 km SE.
The Aviation Color Code was raised to Orange (the second highest level on a four-color scale) on 3 April.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)