(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170808/2147Z (3) Volcano:Sheveluch (CAVW #300270) (4) Current Aviation Color Code:ORANGE (5) Previous Aviation Color Code:orange (6) Source:KVERT (7) Notice Number:2017-183 (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:According to video data by KVERT, eruption of Sheveluch volcano began from 16:31 UTC on 08 August, 2017. Explosions sent ash up to 10 km a.s.l., and ash cloud drift to the south-south-east from the volcano. At 21:20 UTC, front of ash cloud in size 220 km (longwise) is located for about 360 km to the south-southeast from the volcano.\n\nExplosive-extrusive eruption 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:32800 ft (10000 m) AMSL Time and method of ash plume/cloud height determination: 20170808/1650Z – Himawari-8(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 224 mi (360 km)\nDirection of drift of ash plume/cloud of the volcano: S / azimuth 170 deg \nTime and method of ash plume/cloud determination: 20170808/2120Z – Himawari-8\nStart time of explosion and how determined: 20170808/1631Z – Video data\nDuration of explosion: ~ 600 minutes(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 Aviation Color Code is changes. 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.