(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20221125/2333Z (3) Volcano:Alaid (CAVW #290390) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:green (6) Source:KVERT (7) Notice Number:2022-181 (8) Volcano Location:N 50 deg 51 min E 155 deg 33 min (9) Area:Northern Kuriles, Russia (10) Summit Elevation:2339 m (7671.92 ft)(11) Volcanic Activity Summary:An explosive activity of the volcano continues. Satellite data by KVERT showed an ash plume extended about 38 km to the south-east of the volcano.\n\nA moderate eruptive activity of the volcano continues. Ash explosions up to 8 km (26,200 ft) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:4500-4700 m (14760-15416 ft) AMSL Time and method of ash plume/cloud height determination: 20221125/2225Z – NOAA-18 4m5(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 38 km (24 mi)\nDirection of drift of ash plume/cloud of the volcano: SE / azimuth 128 deg \nTime and method of ash plume/cloud determination: 20221126/2225Z – NOAA-19 4m5(14) Remarks:(15) Contacts: Dmitry V. Melnikov, IVS FEB RAS\ndvm@kscnet.ru \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.