(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20180831/0015Z
(3) Volcano:	Ebeko (CAVW #290380)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	orange
(6) Source:	KVERT
(7) Notice Number:	2018-77
(8) Volcano Location:	N 50 deg 41 min E 156 deg 0 min
(9) Area:	Northern Kuriles, Russia
(10) Summit Elevation:	3791.68 ft (1156 m)
(11) Volcanic Activity Summary:	According to visual data, a moderate explosive activity of Ebeko volcano continues. Ash explosions sent ash up to 4 km a.s.l. and an ash cloud drifted to the east from the volcano. A moderate gas-steam with some amount of ash activity of the volcano continues. Ash explosions up to 19,700 ft (6 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft and airport of Severo-Kurilsk.
(12) Volcanic cloud height:	13120 ft (4000 m) AMSL Time and method of ash plume/cloud height determination: 20180830/2344Z – Visual data
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 3 mi (5 km) Direction of drift of ash plume/cloud of the volcano: E Time and method of ash plume/cloud determination: 20180830/2344Z – Visual data Start time of explosion and how determined: 20180830/2330Z – Visual data
(14) Remarks:
(15) Contacts:	Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS girina@kscnet.ru +74152202044 Duty 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. In 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.