KVERT Information Releases
Information of Kamchatkan Volcanic Eruption Response Team (KVERT)
VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)

WMRA01 RUVX 242058
VONA
DTG: 20260824/2058Z
VOLCANO: KLYUCHEVSKOY 300260
PSN: N5603 E16039
AREA: RUSSIAN FEDERATION
SOURCE ELEV: 4750M AMSL
NOTICE NR: 2026/09
CURRENT COLOUR CODE: ORANGE
PREVIOUS COLOUR CODE: ORANGE
SVO: KVERT
ACT STS: ERUPTION ONGOING
ONSET: 20260824/2055Z
DUR: 9 DAYS
VA CLD HGT: 6000M AMSL
HGT SOURCE: VIDEO DATA
MOV: E
CTC: DMITRY V. MELNIKOV, IVS FEB RAS, TEL: +79622825253, DVM@KSCNET.RU, KVERT.FEBRAS.NET
RMK: EXPLOSIVE ERUPTION OF VOLCANO CONT. ASH PLUME IS EXTENDING FOR 130KM TO E OF VOLCANO. ONGOING ACTIVITY COULD AFFECT LOW-FLYING AIRCRAFT.
NXT NOTICE: A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOUR CODE CHANGES.
 

CITATION GUIDELINES

For formal scientific citation of this KVERT/VONA, please use the following:
KVERT Volcano Observatory Notice for Aviation (VONA). August 24, 2026. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?vn=139.
Aviation Color Codes

GREEN

Volcano is in normal, non-eruptive state

   or, after a change from a higher level: 

Volcanic activity considered to have ceased, and volcano reverted to its normal, non-eruptive state.

YELLOW

Volcano is experiencing signs of elevated unrest above known background levels. 

   or, after a change from higher level: 

Volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.

ORANGE

Volcano is exhibiting heightened unrest with increased likelihood of eruption.

   or,

Volcanic eruption is underway with no or minor ash emission.
[specify ash-plume height if possible]

RED

Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely.

  or,

Eruption is underway with significant emission of ash into the atmosphere.
[specify ash-plume height if possible]