(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170719/0420Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current Aviation Color Code:ORANGE (5) Previous Aviation Color Code:orange (6) Source:KVERT (7) Notice Number:2017-164 (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. An ash plume extended about 103 km to the south-west from the volcano.\n\nEruptive activity of the volcano continues. Ash explosions up to 26,200-32,800 ft (8-10 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:16400 ft (5000 m) AMSL Time and method of ash plume/cloud height determination: 20170719/0349Z – NOAA 19 (4m5)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 64 mi (103 km)\nDirection of drift of ash plume/cloud of the volcano: WSW / azimuth 248 deg \nTime and method of ash plume/cloud determination: 20170719/0349Z – NOAA 19 (4m5)\nDuration of explosion: ~ 720 minutes(14) Remarks:(15) Contacts: Dmitry V. Melnikov, IVS FEB RAS\ndvm@kscnet.ru \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.