(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20171220/0447Z
(3) Volcano:	Bezymianny (CAVW #300250)
(4) Current aviation colour code:	RED
(5) Previous aviation colour code:	red
(6) Source:	KVERT
(7) Notice Number:	2017-269
(8) Volcano Location:	N 55 deg 58 min E 160 deg 35 min
(9) Area:	Kamchatka, Russia
(10) Summit Elevation:	9452.96 ft (2882 m)
(11) Volcanic Activity Summary:	According to satellite data by KVERT, ash plume on the height about 15 km a.s.l. drift for about 85 km to the north-east from the volcano. Strong ash explosions up to 49,200 ft (15 km) a.s.l. occur at this time. Ongoing activity could affect international and low-flying aircraft.
(12) Volcanic cloud height:	49200 ft (15000 m) AMSL Time and method of ash plume/cloud height determination: 20171220/0420Z – Himawari-8
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 53 mi (85 km) Direction of drift of ash plume/cloud of the volcano: NE / azimuth 53 deg Time and method of ash plume/cloud determination: 20171220/0420Z – Himawari-8 Start time of explosion and how determined: 20171220/0341Z – Video data
(14) Remarks:
(15) Contacts:	Anton A. Nuzhdaev, IVS FEB RAS envi@kscnet.ru Duty 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. 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.