(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20230418/2329Z (3) Volcano:Sheveluch (CAVW #300270) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2023-63 (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:Satellite data by KVERT shows a plume of resuspended ash is extending to the west-northwest of the volcano. A growth of the lava dome continues, a strong fumarolic activity, an incandescence of the lava dome, and explosions accompanies this process.\n\nAn 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:3500-4000 m (11480-13120 ft) AMSL Time and method of ash plume/cloud height determination: 20230418/2240Z – Himawari-9 14m15(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 204 km (127 mi)\nDirection of drift of ash plume/cloud of the volcano: WNW / azimuth 292 deg \nTime and method of ash plume/cloud determination: 20230418/2240Z – 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.