(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
 (2) Issued:20180322/2252Z
 (3) Volcano:Maly Semyachik (CAVW #300140)
 (4) Current aviation colour code:YELLOW
 (5) Previous aviation colour code:green
 (6) Source:KVERT
 (7) Notice Number:2018-31
 (8) Volcano Location:N 54 deg 8 min E 159 deg 40 min
 (9) Area:Kamchatka, Russia
(10) Summit Elevation:5116.8 ft (1560 m)
(11) Volcanic Activity Summary:An activity of the volcano increased. Satellite data by KVERT showed a thermal anomaly over the volcano on 20-22 March. It is assumed that the ice cover of the lake has melted. Explosive activity of the volcano is possible.

An activity of the volcano increased. 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:NO ASH CLOUD PRODUSED
(13) Other volcanic cloud information:NO ASH CLOUD PRODUSED
(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.