(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20180108/2357Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2018-12 (8) Volcano Location:N 56 deg 3 min E 160 deg 38 min (9) Area:Kamchatka, Russia (10) Summit Elevation:15580 ft (4750 m)(11) Volcanic Activity Summary:A moderate eruptive activity of the volcano continues. A gas-steam plume containing some amount of ash drift for about 100 km to the north-northwest from the volcano.\n\nA moderate eruptive activity of the volcano continues. Ongoing 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: 20180108/2350Z – Video data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 62 mi (100 km)\nDirection of drift of ash plume/cloud of the volcano: NNW / azimuth 338 deg \nTime and method of ash plume/cloud determination: 20180108/2320Z – 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/index_eng.php.\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.