VOLCANO OBSERVATORY NOTICE TO AVIATION (VONA)

WMRA01 RUVX 080542
VONA
DTG: 20261108/0542Z
VOLCANO: SHEVELUCH 300270
PSN: N5638 E16119
AREA: RUSSIAN FEDERATION
SOURCE ELEV: 2500M AMSL
NOTICE NR: 2026/41
CURRENT COLOUR CODE: ORANGE
PREVIOUS COLOUR CODE: ORANGE
SVO: KVERT
ACT STS: RE-SUSPENDED VA
ONSET: 20261108/0330Z
DUR: NIL
VA CLD HGT: 5000M AMSL
HGT SOURCE: HIMAWARI-9 14M15
MOV: SE
CTC: ANASTASIYA S. MALYSHEVA, IVS FEB RAS, TEL: +79622825253, MAL-AN@KSCNET.RU, KVERT.FEBRAS.NET
RMK: SATELLITE DATA BY KVERT SHOW A STRONG WIND LIFTS ASH FROM THE EASTERN SLOPES OF SHEVELUCH VOLCANO, AND A PLUME OF RESUSPENDED ASH IS EXTENDING ABOUT 120 KM TO THE EAST-SOUTHEAST OF THE VOLCANO.
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). November 08, 2026. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?vn=187.
Aviation Colour 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]

UNASSIGNED

There is insufficient information available to assess the current status of the volcano or volcanic activity.