(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20201021/2151Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:RED (5) Previous aviation colour code:yellow (6) Source:KVERT (7) Notice Number:2020-190 (8) Volcano Location:N 55 deg 58 min E 160 deg 35 min (9) Area:Kamchatka, Russia (10) Summit Elevation:9452.96 ft (2882 m)(11) Volcanic Activity Summary:According to data by Tokyo VAAC, the explosive eruption of Bezymianny volcano began at 2022 UTC on 21 October. A large ash cloud move to the northern directions of the volcano. The ash cloud have 44 km length to the northwest and 36 km length to the northeast. The eruption is continues.\n\nStrong ash explosions is occuring. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:26240-29520 ft (8000-9000 m) AMSL Time and method of ash plume/cloud height determination: 20201021/2022Z – Video data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 27 mi (44 km)\nDirection of drift of ash plume/cloud of the volcano: NW / azimuth 314 deg \nTime and method of ash plume/cloud determination: 20201021/2110Z – Himawari-8(14) Remarks:(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS\ngirina@kscnet.ru +74152202044\n\nDuty scientist: +79622825253 (16) Next Notice:A new VONA will be issued if conditions change significantly or the colour code is changed. VONAs are posted at http://www.kscnet.ru/ivs/kvert/.\n\nIn Russia, KVERT, on behalf of the Institute of Volcanology and Seismology (IVS) FEB RAS, is responsible for providing information on volcanic activity to international air navigation services for the airspace users.