(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20231116/2358Z
(3) Volcano:	Klyuchevskoy (CAVW #300260)
(4) Current aviation colour code:	GREEN
(5) Previous aviation colour code:	green
(6) Source:	KVERT
(7) Notice Number:	2023-160
(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:	An eruption of the Klyuchevskoy volcano has ended, only fumarole activity of the summit crater is observed. However, 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. Video and satellite data by KVERT shows a plume of resuspended ash is extending for 140 km to the east of the volcano. A fumarole activity of the summit crater of the Klyuchevskoy volcano is observed. However, collapses of old pyroclastic material from the sides of the Apakhonchichsky chute remains. Ongoing activity could affect low-flying aircraft.
(12) Volcanic cloud height:	4500-5000 m (14760-16400 ft) AMSL Time and method of ash plume/cloud height determination: 20231116/2355Z – Video data
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 142 km (88 mi) Direction of drift of ash plume/cloud of the volcano: E / azimuth 97 deg Time and method of ash plume/cloud determination: 20231116/2310Z – Himawari-9 14m15
(14) Remarks:
(15) Contacts:	Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS girina@kscnet.ru +74152202044 Duty 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/. In 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.