(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20201022/0319Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:red (6) Source:KVERT (7) Notice Number:2020-193 (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:The explosive eruption of Bezymianny volcano finished. The large ash cloud continues to be in the area of Klyuchevskoy group of volcanoes, but its height has decreased to 5-5.5 km a.s.l. The cloud has divided on the northern part (105x57 km in size) and the southern (36x67 km in size). \n\nActivity of Bezymianny volcano continues. Ongoing its activity could affect low-flying aircraft. (12) Volcanic cloud height:16400-18040 ft (5000-5500 m) AMSL Time and method of ash plume/cloud height determination: 20201022/0230Z – Himawari-8(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 73 mi (118 km)\nDirection of drift of ash plume/cloud of the volcano: N / azimuth 352 deg \nTime and method of ash plume/cloud determination: 20201022/0230Z – Himawari-8\nStart time of explosion and how determined: 20201021/2022Z – Video data(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.