(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170328/0217Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current Aviation Color Code:YELLOW (5) Previous Aviation Color Code:green (6) Source:KVERT (7) Notice Number:2017-37 (8) Volcano Location:N 56 deg 3 min E 160 deg 38 min (9) Area:Kamchatka, Russia (10) Summit Elevation:15580 ft (4750 m)(11) Volcanic Activity Summary:Gas-steam plume with some amount of ash extended 108 km to the east-north-east from the volcano.\n\nThe explosive eruption of the volcano continues. Ash explosions up to 19,700-26,200 ft (6-8 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft. (12) Volcanic cloud height:16400-19680 ft (5000-6000 m) AMSL Time and method of ash plume/cloud height determination: 20170327/2345Z – MODIS TERRA (31m32)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 67 mi (108 km)\nDirection of drift of ash plume/cloud of the volcano: ENE / azimuth 71 deg \nTime and method of ash plume/cloud determination: 20170327/2345Z – MODIS TERRA (31m32)(14) Remarks:(15) Contacts: Alexander G. Manevich, IVS FEB RAS\nmag@kscnet.ru +74152202115\n\nDuty scientist: +79622825253 (16) Next Notice:A new VONA will be issued if conditions change significantly or the Aviation Color Code is changes. 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.