(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20210417/0235Z (3) Volcano:Ebeko (CAVW #290380) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2021-52 (8) Volcano Location:N 50 deg 41 min E 156 deg 0 min (9) Area:Northern Kuriles, Russia (10) Summit Elevation:1156 m (3791.68 ft)(11) Volcanic Activity Summary:A moderate eruptive activity of the volcano continues. According to visual data by volcanologists from Severo-Kurilsk, explosion sent ash up to 2.5 km a.s.l., an ash cloud is drifting to the north-east of the volcano.\n\nA moderate eruptive activity of the volcano continues. Ash explosions up to 6 km (19,700 ft) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft and airport of Severo-Kurilsk. (12) Volcanic cloud height:2500 m (8200 ft) AMSL Time and method of ash plume/cloud height determination: 20210417/0217Z – Visual data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 5 km (3 mi)\nDirection of drift of ash plume/cloud of the volcano: NE / azimuth 50 deg \nTime and method of ash plume/cloud determination: 20210417/0217Z – 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/.\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.