(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20181005/0615Z (3) Volcano:Ebeko (CAVW #290380) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2018-99 (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:According to satellite data, a moderate explosive activity of Ebeko volcano continues. Ash cloud drifted for about 125 km to the south-east from the volcano.\n\nA moderate gas-steam with some amount of ash activity of the volcano continues. Ash explosions up to 19,700 ft (6 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:8200 ft (2500 m) AMSL Time and method of ash plume/cloud height determination: 20181005/0550Z – Himawari-8(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 78 mi (125 km)\nDirection of drift of ash plume/cloud of the volcano: SE / azimuth 126 deg \nTime and method of ash plume/cloud determination: 20181005/0550Z – Himawari-8\nStart time of explosion and how determined: 20181005/0436Z – Visual data(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 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.