(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20230329/0931Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:yellow (6) Source:KVERT (7) Notice Number:2023-37 (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:The activity of the volcano is gradually increasing. Probably, a new block of lava is squeezed out on the lava dome of the volcano, this is accompanied by the collapse of avalanches. According to Tokyo VAAC and KVERT, an ash cloud up to 6 km a.s.l. was formed at 0625 UTC on 29 March. An explosive volcanic eruption is possible with the removal of ash up to 15 km above sea level, the formation of pyroclastic flows and the spread of an ash cloud hundreds of kilometers from the volcano during next several days. KVERT continues to monitor the volcano.\n\nThe extrusive eruption of the volcano continues. Ash explosions up to 10-15 km (32,800-49,200 ft) a.s.l. could occur during next several days. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:6000 m (19680 ft) AMSL Time and method of ash plume/cloud height determination: 20230329/0625Z – Video data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 25 km (16 mi)\nDirection of drift of ash plume/cloud of the volcano: NE / azimuth 51 deg \nTime and method of ash plume/cloud determination: 20230329/0820Z – Himawari-9 14m15(14) Remarks:(15) Contacts: Dmitry V. Melnikov, IVS FEB RAS\ndvm@kscnet.ru \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.