(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20231019/2103Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:yellow (6) Source:KVERT (7) Notice Number:2023-120 (8) Volcano Location:N 55 deg 58 min E 160 deg 35 min (9) Area:Kamchatka, Russia (10) Summit Elevation:2882 m (9452.96 ft)(11) Volcanic Activity Summary:An extrusive-effusive eruption of the volcano continues. Satellite data by KVERT showed an ash plume extending about 100 km to the east-north-east of the volcano.\n\nAn extrusive-effusive eruption of the volcano continues. Ongoing activity could affect low-flying aircraft (12) Volcanic cloud height:4000-4500 m (13120-14760 ft) AMSL Time and method of ash plume/cloud height determination: 20231019/2020Z – Himawari-9 14m15(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 100 km (62 mi)\nDirection of drift of ash plume/cloud of the volcano: ENE / azimuth 78 deg \nTime and method of ash plume/cloud determination: 20231019/2020Z – Himawari-9 14m15\nStart time of explosion and how determined: 20231019/1440Z – Satellite data(14) Remarks:(15) Contacts: Alexander G. Manevich, IVS FEB RAS\nmag@kscnet.ru +74152202115\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.