(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20231019/0816Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:YELLOW (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2023-119 (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, probably an effuse of a lava flow onto the dome slopes continues. Satellite data by KVERT showed a thermal anomaly over the volcano. An ash cloud 160x65 km in size continues to move to the northwest of the volcano. At 07:30 UTC on 19 October, an ash cloud was located approximately 786 km northwest of 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.