(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20220131/0540Z (3) Volcano:Chikurachki (CAVW #290360) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:green (6) Source:KVERT (7) Notice Number:2022-10 (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:A strong gas-steam activity of the volcano continues from 01:00 UTC on 31 January. Probably a gas-steam plume containing some amount of ash; such plume extended for 75 km to the southwest of the volcano at 02:00 UTC on 31 January. Activity of the volcano continues.\n\nA strong gas-steam 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:4500-5000 m (14760-16400 ft) AMSL Time and method of ash plume/cloud height determination: 20220131/0318Z – JPSS-1 (14m15)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 80 km (50 mi)\nDirection of drift of ash plume/cloud of the volcano: SSW / azimuth 209 deg \nTime and method of ash plume/cloud determination: 20220131/0318Z – JPSS-1 (14m15)(14) Remarks:(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS\ngirina@kscnet.ru +74152202044\n\nDuty 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/.\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.