(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170924/0522Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current Aviation Color Code:YELLOW (5) Previous Aviation Color Code:orange (6) Source:KVERT (7) Notice Number:2017-240 (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:Activity of the volcano decreased - only a gas-steam activity of the volcano is noting. Ash plumes from the volcano were observed on 07 September last time; in the other days Klyuchevskoy was quiet or obscured by clouds. KVERT continues to monitor Klyuchevskoy volcano. \n\nA gas-steam activity of the volcano continues. A danger of strong ash explosions up to 26,200-32,800 ft (8-10 km) a.s.l. is remains. 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 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.