| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | 20230821/2204Z |
| (3) Volcano: | Ebeko (CAVW #290380) |
| (4) Current aviation colour code: | ORANGE |
| (5) Previous aviation colour code: | orange |
| (6) Source: | KVERT |
| (7) Notice Number: | 2023-90 |
| (8) Volcano Location: | N 50 deg 41 min E 156 deg 0 min |
| (9) Area: | Northern Kuriles, Russia |
| (10) Summit Elevation: | 1156 m (3791.68 ft) |
| (11) Volcanic Activity Summary: | A moderate explosive activity of the volcano continues. According to visual data from Severo-Kurilsk, explosions sent ash up to 3 km a.s.l., an ash cloud is drifting to the south-east of the volcano. A moderate eruptive activity of the volcano continues. Ash explosions up to 6 km (19,700 ft) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft and airport of Severo-Kurilsk. |
| (12) Volcanic cloud height: | 3000 m (9840 ft) AMSL Time and method of ash plume/cloud height determination: 20230821/2154Z – Visual data |
| (13) Other volcanic cloud information: | Distance of ash plume/cloud of the volcano: 15 km (9 mi) Direction of drift of ash plume/cloud of the volcano: SE Time and method of ash plume/cloud determination: 20230821/2154Z – Visual data |
| (14) Remarks: | |
| (15) Contacts: | Anton A. Nuzhdaev, IVS FEB RAS envi@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, August 21, 2023. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://www.kscnet.ru/ivs/kvert/van/?n=2023-90. |
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| 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. |