(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	20210224/0206Z
(3) Volcano:	Klyuchevskoy (CAVW #300260)
(4) Current aviation colour code:	ORANGE
(5) Previous aviation colour code:	yellow
(6) Source:	KVERT
(7) Notice Number:	2021-30
(8) Volcano Location:	N 56 deg 3 min E 160 deg 38 min
(9) Area:	Kamchatka, Russia
(10) Summit Elevation:	4750 m (15580 ft)
(11) Volcanic Activity Summary:	The flank eruption (lateral break) on the northwestern slope of Klyuchevskoy volcano continues to work. A bright incandescence over two craters of the flank eruption continues to observing on satellite and video images. The lava flows move from the craters. A mud flow along Krutenkaya River was noted on 23 February for about 7 km from the Klyuchi Village. KVERT continues to monitor Klyuchevskoy volcano. A moderate gas-steam activity of the volcano continues. The danger of ash explosions up to 5-6 km (16,400-19,700 ft) a.s.l. from flank craters remains. 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/. 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.