(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20211021/2311Z (3) Volcano:Ebeko (CAVW #290380) (4) Current aviation colour code:YELLOW (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2021-125 (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 gas-steam activity of the volcano continues, but eruptive events were observed on 22 September, 2021, last time. A thermal anomaly over the volcano was noting on 25 August, 2021, last time. Probably a moderate explosive eruption of the volcano gradually ends. KVERT continues to monitor Ebeko volcano.\n\nA moderate activity of the volcano continues. A danger of ash emission up to 6 km (19,700 ft) a.s.l. at any time is remains. Ongoing activity could affect low-flying aircraft. (12) Volcanic cloud height:NO ASH CLOUD PRODUSED(13) Other volcanic cloud information:NO ASH CLOUD PRODUSED(14) Remarks:(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS\ngirina@kscnet.ru +74152202044\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.