(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20190315/2120Z (3) Volcano:Bezymianny (CAVW #300250) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:red (6) Source:KVERT (7) Notice Number:2019-66 (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:Moderate eruption of Bezymianny continues, but explosions send ash up to 4,0-4,5 km a.s.l., and an ash plume is extending for about 100 km to the east from the volcano. The large eruptive cloud 120 x 130 km in size on the height about 15 km a.s.l. continues to drift to the east from the volcano.\n\nOngoing activity of Bezymianny could affect international and low-flying aircraft. (12) Volcanic cloud height:13120-14760 ft (4000-4500 m) AMSL Time and method of ash plume/cloud height determination: 20190315/2130Z – Video data(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 62 mi (100 km)\nDirection of drift of ash plume/cloud of the volcano: E / azimuth 98 deg \nTime and method of ash plume/cloud determination: 20190315/2050Z – Himawari-8(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.