Klyuchevskoy Volcano eruption in Kamchatka (archive photo).
A plume of resuspended ash, reaching an altitude of up to three kilometers (approximately 9,800 feet) above sea level, has been observed over the Klyuchevskoy volcano in Kamchatka. This information was reported by the Kamchatka Volcanic Eruption Response Team (KVERT) of the Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences, via their Telegram channel.
At 08:50 Kamchatka time (23:50 Moscow time on Wednesday), the continuous ash plume stretched for 65 kilometers (about 40 miles) eastward from the Klyuchevskoy volcano, scientists noted.
A yellow aviation color code has been issued, signifying a potential hazard for local air traffic due to the ash plume.
The Klyuchevskoy volcano is situated 360 kilometers (approximately 224 miles) from Petropavlovsk-Kamchatsky and 30 kilometers (about 18.6 miles) from the town of Klyuchi.
Rupert Blackwood 
Clement Ashworth