(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170702/2039Z (3) Volcano:Sheveluch (CAVW #300270) (4) Current Aviation Color Code:ORANGE (5) Previous Aviation Color Code:orange (6) Source:KVERT (7) Notice Number:2017-154 (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:Satellite data showed two ash clouds from eruption on 12:53 UTC: first about 360 km to the south-west, and second about 158 km to the south-east 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:First ash plume\n16400-19680 ft (5000-6000 m) AMSL Time and method of ash plume/cloud height determination: 20170702/1739Z – NOAA 19 (4m5)\n\nSecond ash plume\n13120-16400 ft (4000-5000 m) a.s.l. Time and method of ash plume/cloud height determination: 20170702/1739Z – NOAA 19 (4m5)(13) Other volcanic cloud information:First ash plume\nDistance of ash plume/cloud of the volcano: 224 mi (360 km)\nDirection of drift of ash plume/cloud of the volcano: SW / azimuth 230 deg \nTime and method of ash plume/cloud determination: 20170702/1739Z – NOAA 19 (4m5)\nStart time of explosion and how determined: 20170702/1253Z – Video data\nDuration of explosion: ~ 30 minutes\n\nSecond ash plume\nDistance of ash plume/cloud of the volcano: 98 mi (158 km)\nDirection of drift of ash plume/cloud of the volcano: SE / azimuth 134 deg \nTime and method of ash plume/cloud determination: 20170702/1739Z – NOAA 19 (4m5)\nStart time of explosion a! nd how determined: 20170702/1253Z – Video data\nDuration of explosion: ~ 30 minutes(14) Remarks:(15) Contacts: Alexander G. Manevich, IVS FEB RAS\nmag@kscnet.ru +74152202115\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.