KVERT DAILY REPORT
Kamchatkan and Kuriles Volcanic Activity
April 23, 2025, all time is UTC

BEZYMIANNY VOLCANO (CAVW #300250)
55.97 N, 160.6 E; Elevation 2882 m (9453 ft)
Aviation Colour Code is RED

Satellite data by KVERT showed the strong explosive eruption of the Bezymianny volcano began at 23:10 UTC on 23 April. Explosions sent ash up to 11 km a.s.l., and ash plume extended for about 60 km to the east of the volcano. Ashfalls were noted at Atlasovo, and Lazo.

SHEVELUCH VOLCANO (CAVW #300270)
56.64 N, 161.32 E; Elevation 3283 m (10768 ft), the dome elevation ~2500 m (8200 ft)
Aviation Colour Code is ORANGE

A growth of the lava dome of the Young Sheveluch volcano, and activity of the 300 years of RAS (the Russian Academy of Sciences) lava dome on the southwestern slope of the Old Sheveluch volcano continues. A growth of the domes is accompanied by powerful gas-steam activity. Satellite data by KVERT showed the volcano was obscured by clouds.

KLYUCHEVSKOY VOLCANO (CAVW #300260)
56.06 N, 160.64 E; Elevation 4750 m (15580 ft)
Aviation Colour Code is YELLOW

An explosive eruption of Strombolian type of the volcano continues. Lava fontaines out on the bottom of a deep (about 200 m) volcanic crater. Satellite data by KVERT showed the volcano was obscured by clouds.

KARYMSKY VOLCANO (CAVW #300130)
54.05 N, 159.44 E; Elevation 1486 m (4874 ft)
Aviation Colour Code is YELLOW

A weak activity of the volcano continues. Satellite data by KVERT showed the volcano was obscured by clouds.

CONTACT INFORMATION:

Duty scientist: Anton A. Nuzhdaev,
E-mail: [email protected]

Tel. Duty scientist: +79622825253

Head of KVERT Dr. Olga A. Girina,
E-mail: [email protected]
Tel.: +74152202044

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.

The daily satellite monitoring for volcanoes of Kamchatkan and Kuriles are producing of KVERT.
KVERT web-page (the Institute of Volcanology and Seismology FEB RAS): http://www.kscnet.ru/ivs/kvert/.

CITATION GUIDELINES

For formal scientific citation of this VONA/KVERT Daily Report, please use the following:
VONA/KVERT Daily Report, April 23, 2025. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://www.kscnet.ru/ivs/kvert/van/?n=.
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]