(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170423/2205Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current Aviation Color Code:ORANGE (5) Previous Aviation Color Code:orange (6) Source:KVERT (7) Notice Number:2017-58 (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:Satellite data by KVERT showed an ash plume extended about 72 km to the south-west from the volcano.\n\nA moderate activity of the volcano continues. Ash and aerosol plumes could affect low-flying aircraft. (12) Volcanic cloud height:22960 ft (7000 m) AMSL Time and method of ash plume/cloud height determination: 20170423/2107Z – NOAA 18 (4m5)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 45 mi (72 km)\nDirection of drift of ash plume/cloud of the volcano: WSW / azimuth 253 deg (14) Remarks:(15) Contacts: Alexander G. Manevich, IVS FEB RAS\nmag@kscnet.ru +74152202115\n\nDuty scientist: +79622825253 (16) Next Notice:A new VONA will be issued if conditions change significantly or the Aviation Color Code is changes. 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.