(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20230407/2106Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:red (6) Source:KVERT (7) Notice Number:2023-50 (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:A strong explosive eruption ended. Ash plume extended about 2000 km to the east from the volcano. Probably, a new block of lava is squeezed out on the lava dome, it's accompanied by the avalanches.\n\nAn extrusive-effusive eruption of the volcano continues. Ash explosions up to 6-7 km (19,700-23,000 ft) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft (12) Volcanic cloud height:NO ASH CLOUD PRODUSED(13) Other volcanic cloud information:NO ASH CLOUD PRODUSED(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.