(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20201206/2316Z
(3) Volcano:	Klyuchevskoy (CAVW #300260)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	orange
(6) Source:	KVERT
(7) Notice Number:	2020-231
(8) Volcano Location:	N 56 deg 3 min E 160 deg 38 min
(9) Area:	Kamchatka, Russia
(10) Summit Elevation:	15580 ft (4750 m)
(11) Volcanic Activity Summary:	A moderate explosive-effusive eruption of the volcano continues. According to video and satellite data, a gas-steam plume with some amount of ash is extending for 90 km to the north-east of the volcano. A moderate explosive-effusive eruption of the volcano continues. Ash explosions up to 23,000-26,200 ft (7-8 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.
(12) Volcanic cloud height:	18040-19680 ft (5500-6000 m) AMSL Time and method of ash plume/cloud height determination: 20201206/2315Z – Video data
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 56 mi (90 km) Direction of drift of ash plume/cloud of the volcano: ENE / azimuth 65 deg Time and method of ash plume/cloud determination: 20201206/2250Z – Himawari-8
(14) Remarks:
(15) Contacts:	Dmitry V. Melnikov, IVS FEB RAS dvm@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/. 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.