(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20231105/0232Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2023-152 (8) Volcano Location:N 56 deg 3 min E 160 deg 38 min (9) Area:Kamchatka, Russia (10) Summit Elevation:4750 m (15580 ft)(11) Volcanic Activity Summary:The eruption of the Klyuchevskoy volcano has ended, but a large hot lava flow lying in the Apakhonchichsky chute, continues to provoke the collapses of old pyroclastic material from the sides of the chute. From time to time on 04 November, ash plumes appeared that rose to 5.5 km a.s.l., and were extending for 170 km to the northeast of the volcano.\n\nThe activity of the volcano continues. A danger of ash rising up to 7 km (23,000 ft) a.s.l. remains. Ongoing activity could affect low-flying aircraft. (12) Volcanic cloud height:5000-5500 m (16400-18040 ft) AMSL Time and method of ash plume/cloud height determination: 20231105/0150Z – Himawari-9 14m15(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 22 km (14 mi)\nDirection of drift of ash plume/cloud of the volcano: ENE / azimuth 61 deg \nTime and method of ash plume/cloud determination: 20231105/0150Z – Himawari-9 14m15(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.