(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20230131/2140Z
(3) Volcano:	Chikurachki (CAVW #290360)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	orange
(6) Source:	KVERT
(7) Notice Number:	2023-18
(8) Volcano Location:	N 50 deg 19 min E 155 deg 27 min
(9) Area:	Northern Kuriles, Russia
(10) Summit Elevation:	1816 m (5956.48 ft)
(11) Volcanic Activity Summary:	An eruptive activity of the volcano continues. Satellite data showed an ash plume extended about 35 km to the north-east of the volcano. An activity of the volcano continues. Ash explosions up to 6 km (19,700 ft) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.
(12) Volcanic cloud height:	3500 m (11480 ft) AMSL Time and method of ash plume/cloud height determination: 20230131/2050Z – Himawari-9 14m15
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 35 km (22 mi) Direction of drift of ash plume/cloud of the volcano: ENE / azimuth 76 deg Time and method of ash plume/cloud determination: 20230131/2050Z – Himawari-9 14m15
(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.