On 24 March KVERT reported that gas-and-steam emissions continued to rise from Klyuchevskoy's crater, and a weak thermal anomaly was occasionally identified in satellite images.
The Aviation Color Code was lowered to Green (the lowest level on a four-color scale).
On 28 March a gas, steam, and ash plume identified in satellite data rose to altitudes of 5-6 km (16,400-19,700 ft) a.s.l.
and drifted 108 km ENE.
The Aviation Color Code was raised to Yellow.
The next day an ash plume rose as high as 7.5 km (24,600 ft) a.s.l.
and drifted 75 km SW.
The Aviation Color Code was raised to Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)