(1) KVERT VOLCANIC ACTIVITY NOTICE (VAN)
 (2) Issued:20260513/2239Z
 (3) Volcano:Bezymianny (CAVW #300250)
 (4) Current aviation colour code:ORANGE
 (5) Previous aviation colour code:yellow
 (6) Source:KVERT
 (7) Notice Number:2026-40
 (8) Volcano Location:N 55 deg 58 min E 160 deg 36 min
 (9) Area:Kamchatka, Russia
(10) Summit Elevation:2882 m (9452.96 ft)
(11) Volcanic Activity Summary:An activity of the volcano has increased, hot avalanches are observed on the slopes, and the temperature of the thermal anomaly has increased during last day. A gas-steam plume with ash extended about 80 km to the south-west from the volcano.

An extrusive eruption of the volcano continues. Ash explosions up to 15 km (49,200 ft) a.s.l. could occur during several days. Ongoing activity could affect international and low-flying aircraft.
(12) Volcanic cloud height:4000 m (13120 ft) AMSL Time and method of ash plume/cloud height determination: 20260513/2200Z – Himawari-9 14m15
(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 80 km (50 mi)
Direction of drift of ash plume/cloud of the volcano: WSW / azimuth 241 deg
Time and method of ash plume/cloud determination: 20260513/2200Z – Himawari-9 14m15
(14) Remarks:
(15) Contacts: Alexander G. Manevich, IVS FEB RAS, mag@kscnet.ru, +74152202115

Duty scientist: +79622825253
(16) Next Notice:A new Notice will be issued if conditions change significantly or the colour code is changed. Notices are posted at http://kvert.febras.net.

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.

CITATION GUIDELINES

For formal scientific citation of this KVERT Volcanic Activity Notice, please use the following:
KVERT Volcanic Activity Notice, мая 13, 2026. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?n=2026-40.
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.