The Shiveluch volcano in Russia’s far eastern Kamchatka Peninsula erupted early on Tuesday and sent up an ash plume 10 kilometers (six miles) high, posing an increased threat to air traffic, the Kamchatka Volcanic Eruption Response Team (KVERT) said. The team issued a code red Volcano Observatory Notice for Aviation, noting that a "large ash cloud" was drifting west of the volcano and that ash explosions up to 15 kilometers high could occur at any time. "Ongoing activity could affect international and low-flying aircraft," it said.
