(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20221025/0828Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:YELLOW (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2022-147 (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 strong explosive eruption of the volcano finished. Satellite data by KVERT showed an ash plume and later a long ash cloud moved for 1915 km to the northeast of the volcano on 23-24 October. The extrusive-effusive eruption of the volcano continues, a strong fumarole activity, an incandescence of the lava dome at night, and hot avalanches accompanies this process. Satellite data showed a bright thermal anomaly over the volcano. KVERT continues to monitor Bezymianny volcano.\n\nThe 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:Bezymianny volcano is the most active volcano of the world. In 1955, for the first time in history, Bezymianny started to erupt and after six months it produced a catastrophic eruption with the total volume of eruptive products over 3 km3. The lava dome began to grow in the explosive crater immediately after the catastrophe and continues at now.(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.