| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | 20220525/0741Z |
| (3) Volcano: | Bezymianny (CAVW #300250) |
| (4) Current aviation colour code: | ORANGE |
| (5) Previous aviation colour code: | orange |
| (6) Source: | KVERT |
| (7) Notice Number: | 2022-41 |
| (8) Volcano Location: | N 55 deg 58 min E 160 deg 35 min |
| (9) Area: | Kamchatka, Russia |
| (10) Summit Elevation: | 2882 m (9452.96 ft) |
| (11) Volcanic Activity Summary: | The extrusive-effusive eruption of the volcano continues, a strong fumarole activity, and an incandescence of the lava dome, and hot avalanches accompanies this process. Strong hot avalanches on the eastern flank of the lava dome continues. A gas-steam plume with some amount of ash is extending for 25 km to the north-east of the volcano. The extrusive-effusive eruption of the volcano continues. Ash explosions up to 10 km (32,800 ft) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft. |
| (12) Volcanic cloud height: | 3000-3500 m (9840-11480 ft) AMSL Time and method of ash plume/cloud height determination: 20220525/0700Z – Himawari-8 |
| (13) Other volcanic cloud information: | Distance of ash plume/cloud of the volcano: 25 km (16 mi) Direction of drift of ash plume/cloud of the volcano: NE / azimuth 41 deg Time and method of ash plume/cloud determination: 20220525/0700Z – Video data |
| (14) Remarks: | |
| (15) Contacts: | Dmitry V. Melnikov, IVS FEB RAS dvm@kscnet.ru 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. |
CITATION GUIDELINES For formal scientific citation of this VONA/KVERT Information Release, please use the following: VONA/KVERT Information Release, May 25, 2022. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://www.kscnet.ru/ivs/kvert/van/?n=2022-41. |
|
| 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. |
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. |