(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20171208/0007Z (3) Volcano:Ebeko (CAVW #290380) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2017-260 (8) Volcano Location:N 50 deg 41 min E 156 deg 0 min (9) Area:Northern Kuriles, Russia (10) Summit Elevation:3791.68 ft (1156 m)(11) Volcanic Activity Summary:A moderate explosive activity of the volcano continues. According to visual data by volcanologists from Severo-Kurilsk, explosions sent ash up to 2.0 km a.s.l. and extend about 10 km to the east from the volcano. Satellite data by KVERT showed the volcano was quiet\n\nA moderate gas-steam with some amount of ash activity of the volcano continues. Ash explosions up to 16,400 ft (5 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft and airport of Severo-Kurilsk. (12) Volcanic cloud height:6560 ft (2000 m) AMSL Time and method of ash plume/cloud height determination: 20171207/2300Z – Visual data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 6 mi (10 km)\nDirection of drift of ash plume/cloud of the volcano: E / azimuth 90 deg (14) Remarks:(15) Contacts: Anton A. Nuzhdaev, IVS FEB RAS\nenvi@kscnet.ru \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.