Two other Kamchatka volcanoes are showing signs of unrest now. The Shiveluch volcano is releasing bursts of ash 2,500 meters up into the air. The ash cloud stretches out for over ten kilometers.
Seismological stations have also registered repeated volcanic tremors and a series of shallow earthquakes in the vicinity of the Klyuchevskaya Sopka volcano, Eurasia's tallest. Steam and gas from its crater are rising as high as 700 meters.
Kamchatcka's active volcanoes pose no threat to the peninsular inhabitants so far, scientists say. But the volcanic ash columns and clouds do create problems for air flights over the peninsula. Ash particles may cause an aircraft to break down and crash if they get into its turbines. Moreover, they make it hard for pilots to navigate.