(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20230419/0347Z
(3) Volcano:	Sheveluch (CAVW #300270)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	orange
(6) Source:	KVERT
(7) Notice Number:	2023-64
(8) Volcano Location:	N 56 deg 38 min E 161 deg 18 min
(9) Area:	Kamchatka, Russia
(10) Summit Elevation:	3283 m (10768.24 ft), the dome elevation ~2500 m (8200 ft)
(11) Volcanic Activity Summary:	A growth of the lava dome continues, a strong fumarolic activity, an incandescence of the lava dome, and explosions accompanies this process. Satellite data by KVERT shows a plume of resuspended ash is extending for 146 km to the west-northwest of the volcano. In addition, the ash deposited after the Sheveluch volcano eruption on 10-13 April, 2023, rose from the slopes of the volcanoes of the Klyuchevskaya group, and the plume of resuspended ash also extended for 164 km to the west-northwest of these volcanoes. An extrusive eruption of the volcano continues. A danger of ash explosions up to 10 km (32,800 ft) a.s.l. is remains. Ongoing activity could affect international and low-flying aircraft.
(12) Volcanic cloud height:	4000 m (13120 ft) AMSL Time and method of ash plume/cloud height determination: 20230419/0310Z – Himawari-9 14m15
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 146 km (91 mi) Direction of drift of ash plume/cloud of the volcano: WNW / azimuth 283 deg Time and method of ash plume/cloud determination: 20230419/0310Z – Himawari-9 14m15
(14) Remarks:	plumes of resuspended ash
(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.