(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20171226/0257Z (3) Volcano:Sheveluch (CAVW #300270) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2017-274 (8) Volcano Location:N 56 deg 38 min E 161 deg 18 min (9) Area:Kamchatka, Russia (10) Summit Elevation:10768.24 ft (3283 m), the dome elevation ~8200 ft (2500 m)(11) Volcanic Activity Summary:Probably ash plume drift for about 53 km to the north-east from the volcano. Clouds obscured the volcano. \n\nA moderate eruptive activity of the volcano continues. Ash explosions up to 32,800-49,200 ft (10-15 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:22960-26240 ft (7000-8000 m) AMSL Time and method of ash plume/cloud height determination: 20171226/0210Z – Himawari-8(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 32 mi (52 km)\nDirection of drift of ash plume/cloud of the volcano: NE / azimuth 45 deg \nTime and method of ash plume/cloud determination: 20171226/0210Z – Himawari-8(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/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.