(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20231020/0004Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:YELLOW (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2023-121 (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:After strong explosive eruption of the volcano on 18 October, an effuse of a viscous lava flow onto the dome slopes continues. A strong fumarolic activity, and an incandescence of the lava dome accompanies this process. Satellite data by KVERT showed a thermal anomaly over the volcano.\n\nAn extrusive-effusive eruption of the volcano continues. Ongoing activity could affect low-flying aircraft (12) Volcanic cloud height:NO ASH CLOUD PRODUSED(13) Other volcanic cloud information:NO ASH CLOUD PRODUSED(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.