|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Klyuchevskoy (CAVW #300260)|
|(4) Current aviation colour code:||ORANGE|
|(5) Previous aviation colour code:||orange|
|(7) Notice Number:||2020-111|
|(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:||A moderate explosive-effusive eruption of the volcano continues. The Strombolian volcanic activity is observing. The lava flow continues to move on the southeastern flank of the volcano (the Apakhonchich chute), phreatic bursts accompany this process. According to satellite data, an ash plume is extending for 180 km to the east of the volcano.|
A moderate explosive eruption of the volcano continues. Ash explosions up to 16,400-23,000 ft (5-7 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.
|(12) Volcanic cloud height:||18040 ft (5500 m) AMSL Time and method of ash plume/cloud height determination: 20200531/2220Z – Himawari-8|
|(13) Other volcanic cloud information:||Distance of ash plume/cloud of the volcano: 112 mi (180 km)|
Direction of drift of ash plume/cloud of the volcano: ESE / azimuth 119 deg
|(15) Contacts:|| Anton A. Nuzhdaev, IVS FEB RAS|
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/.|
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.
For formal scientific citation of this VONA/KVERT Operative Report, please use the following:
VONA/KVERT Operative Report, Май 31, 2020. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://www.kscnet.ru/ivs/kvert/van/?n=2020-111.