Among the active volcanic eruptions was the Krasheninnikov volcano, a previously at least 400-year-dormant volcano.

An eruption of the Krasheninnikov volcano in Russia expelled a huge ash plume and may be linked to the earthquake that triggered tsunami warnings on 29 July

Last week, a massive magnitude-8.8 earthquake struck off Russia's Kamchatka Peninsula, sparking tsunami warnings as far away as French Polynesia and Chile.