VOLKAM17 EXERCISE EXERCISE EXERCISE VOLKAM17 EXERCISE EXERCISE EXERCISE VOLKAM17 EXERCISE EXERCISE EXERCISE\n\n (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20170420/2200Z (3) Volcano:Koshelev (CAVW #300020) (4) Current Aviation Color Code:RED (5) Previous Aviation Color Code:green (6) Source:KVERT (7) Notice Number:2017-0000 (8) Volcano Location:N 51 deg 21 min E 156 deg 45 min (9) Area:Kamchatka, Russia (10) Summit Elevation:5943.36 ft (1812 m)(11) Volcanic Activity Summary:Very strong explosive eruption of Koshelev volcano began at 21:45 UTC on April 20, 2017. According to satellite data, ash is reaching 45,000 ft (13.8 km) a.s.l. and ash plume is drifting to the southeast of the volcano on the height 45,000 ft (13.8 km) a.s.l. at this time. Ash emission is continuing.\n\nA strong explosive eruption of the volcano continues. Ongoing activity could affect international and low-flying aircraft. (12) Volcanic cloud height:45264 ft (13800 m) AMSL Time and method of ash plume/cloud height determination: 20170420/2145Z – NOAA 18 (4m5)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 19 mi (30 km)\nDirection of drift of ash plume/cloud of the volcano: ESE / azimuth 120 deg \nTime and method of ash plume/cloud determination: 20170420/2145Z – NOAA 18 (4m5)(14) Remarks:This strong explosive eruption is extremely hazardous for aircraft downwind. There was one known a strong explosive eruption of Koshelev volcano which occurred probably in the end of 17 Century. Koshelev volcano is not monitored with a seismic station. KVERT uses satellite data and sometimes visual observations from Severo-Kurilsk (Paramushir Island) and pilots reports to monitor Koshelev volcano.(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.VOLKAM17 EXERCISE EXERCISE EXERCISE VOLKAM17 EXERCISE EXERCISE EXERCISE VOLKAM17 EXERCISE EXERCISE EXERCISE\n\n