(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20180322/2252Z (3) Volcano:Maly Semyachik (CAVW #300140) (4) Current aviation colour code:YELLOW (5) Previous aviation colour code:green (6) Source:KVERT (7) Notice Number:2018-31 (8) Volcano Location:N 54 deg 8 min E 159 deg 40 min (9) Area:Kamchatka, Russia (10) Summit Elevation:5116.8 ft (1560 m)(11) Volcanic Activity Summary:An activity of the volcano increased. Satellite data by KVERT showed a thermal anomaly over the volcano on 20-22 March. It is assumed that the ice cover of the lake has melted. Explosive activity of the volcano is possible. \n\nAn activity of the volcano increased. Ash explosions up to 16,400-23,000 ft (5-7 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft. (12) Volcanic cloud height:NO ASH CLOUD PRODUSED(13) Other volcanic cloud information:NO ASH CLOUD PRODUSED(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/index_eng.php.\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.