(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20190316/0927Z
(3) Volcano:	Bezymianny (CAVW #300250)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	orange
(6) Source:	KVERT
(7) Notice Number:	2019-69
(8) Volcano Location:	N 55 deg 58 min E 160 deg 35 min
(9) Area:	Kamchatka, Russia
(10) Summit Elevation:	9452.96 ft (2882 m)
(11) Volcanic Activity Summary:	A gas-steam activity of the volcano sometimes with some amount of ash continues. A gas-seam plume with ash on the height about 4.5-5.5 km a.s.l. continues to drift to the east from the volcano. According to seismic data by KB GS RAS (http://www.emsd.ru/~ssl/monitoring/), powerful explosive eruption of Bezymianny began at 17:11 UTC on 15 March 2019. According to video data by KVERT, explosions sent ash up to 15 km a.s.l. at 17:30 UTC on 15 March, and a large ash cloud began to drifting to the north-east from the volcano. Ashfalls occurred at Ust'-Kamchatsk probably from 18:50 till 19:30 UTC on 15 March. After powerful explosions up to 15 km a.s.l., a strong explosive eruption of the volcano continued, but explosions sent ash up to 5-6 km a.s.l., and ash plume with more concentration of ash by comparison with first large explosions drifted to the east from the volcano. Probably from 23:30 UTC on 15 March ashfalls began at Nikolskoe (Bering Island, Russia) and weak ashfalls continued possibly till 06:00 UTC on 16 March. Ash clouds continues to drift to the east from the volcano. KVERT continues to monitor Bezymianny volcano. Activity of Bezymianny volcano conti! nues. Ongoing its activity could affect international and low-flying aircraft.
(12) Volcanic cloud height:	14760-18040 ft (4500-5500 m) AMSL Time and method of ash plume/cloud height determination: 20190316/0850Z – Himawari-8
(13) Other volcanic cloud information:	Distance of ash plume/cloud of the volcano: 541 mi (870 km) Direction of drift of ash plume/cloud of the volcano: E / azimuth 94 deg Time and method of ash plume/cloud determination: 20190316/0850Z – Himawari-8
(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.