(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20201021/0254Z (3) Volcano:Karymsky (CAVW #300130) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:green (6) Source:KVERT (7) Notice Number:2020-189 (8) Volcano Location:N 54 deg 2 min E 159 deg 26 min (9) Area:Kamchatka, Russia (10) Summit Elevation:4874.08 ft (1486 m)(11) Volcanic Activity Summary:According to data by AMC Elizovo (from pilots), explosions sent ash up to 4 km a.s.l. about 0230 UTC on 21 October. Ash plume continues to drift to the south-east of the volcano. Last esplosions of Karymsky was noted on 29 July, 2020. KVERT continues to monitor the volcano.\n\nA moderate eruptive activity of the volcano continues. Ash explosions up to 19,700-23,000 ft (6-7 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircrafts. (12) Volcanic cloud height:13120-16400 ft (4000-5000 m) AMSL Time and method of ash plume/cloud height determination: 20201021/0220Z – Himawari-8(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 25 mi (40 km)\nDirection of drift of ash plume/cloud of the volcano: SE / azimuth 134 deg \nTime and method of ash plume/cloud determination: 20201021/0220Z – Himawari-8\nStart time of explosion and how determined: 20201021/0215Z – Satellite 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.