(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. Explosive-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 16400-19680 ft (5000-6000 m) AMSL Time and method of ash plume/cloud height determination: 20170702/1739Z – NOAA 19 (4m5) Second ash plume 13120-16400 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 Distance of ash plume/cloud of the volcano: 224 mi (360 km) Direction of drift of ash plume/cloud of the volcano: SW / azimuth 230 deg Time and method of ash plume/cloud determination: 20170702/1739Z – NOAA 19 (4m5) Start time of explosion and how determined: 20170702/1253Z – Video data Duration of explosion: ~ 30 minutes Second ash plume Distance of ash plume/cloud of the volcano: 98 mi (158 km) Direction of drift of ash plume/cloud of the volcano: SE / azimuth 134 deg Time and method! of ash plume/cloud determination: 20170702/1739Z – NOAA 19 (4m5) Start time of explosion and how determined: 20170702/1253Z – Video data Duration of explosion: ~ 30 minutes
(14) Remarks:
(15) Contacts:	Alexander G. Manevich, IVS FEB RAS mag@kscnet.ru +74152202115 Duty 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. In 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.