VONA
What is VONA?

VONA stands for Volcano Observatory Notice for Aviation. It issues reports for changes, both increases and decreases, in volcanic activities, providing a description on the nature of the unrest or eruption, potential or current hazards as well as likely outcomes. See the following link (USGS) for further details. The Center for Volcanology and Geological Hazard Mitigation (CVGHM) under the Geological Agency of the Indonesian Ministry of Energy and Mineral Resources produced VONA's reports based on analysis of data from the agency's monitoring networks as well as from direct observations. VONA's alert levels are color-coded to indicate the different types of notifications addressing specific informative needs. The reports are disseminated via email to national and international stakeholders in the aviation sector. Other interested parties can avail of them through email subscription. All notifications are publicly available online.

USGS
 

3rd of February 2021, 3 weeks ago

2021-02-03 01:18:00 UTC Orange

Dukono - 20210203/0118Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud at 0058 UTC (0958 local). Best estimate of ash-cloud top is around 4573 FT (1429 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south..

View
 

2nd of February 2021, 3 weeks ago

2021-02-02 16:55:00 UTC Orange

Raung - 20210202/1655Z 

Burhan Alethea, A.Md., Raung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud 1654 UTC ( 23:54 Local Time ). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 13862 FT (4332 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east .

View
 

1st of February 2021, 3 weeks ago

2021-02-01 23:54:00 UTC Orange

Semeru - 20210201/2354Z 

Mukdas Sofian, A.Md., Semeru Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud at 2336 UTC (0636 local) Ash-cloud not visible. Ash-cloud moving to northeast.

View
2021-02-01 23:08:00 UTC Orange

Raung - 20210201/2308Z 

Mukijo, Raung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud 2310 UTC ( 06:10 Local Time ). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east .

View
2021-02-01 06:53:00 UTC Orange

Raung - 20210201/0653Z 

Mukijo, Raung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud 0650 UTC ( 13:50 Local Time ), Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east.

View
 

27th of January 2021, 4 weeks ago

2021-01-27 20:08:00 UTC Orange

Raung - 20210127/2008Z 

Burhan Alethea, A.Md., Raung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud 19:35 UTC ( 02:35 Local Time ), Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12902 FT (4032 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash moving to East-Southeast.

View
2021-01-27 11:24:00 UTC Orange

Sinabung - 20210127/1124Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 4 weeks ago

Eruption with volcanic ash cloud at 1122 UTC (1822 local) Best estimate of ash-cloud top is around 9472 FT (2960 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to southeast - east..

View
2021-01-27 06:55:00 UTC Orange

Dukono - 20210127/0655Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 4 weeks ago

Eruption with volcanic ash cloud at 0516 UTC (1416 local). Best estimate of ash-cloud top is around 4573 FT (1429 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to west..

View
 

26th of January 2021, 4 weeks ago

2021-01-26 04:06:00 UTC Orange

Dukono - 20210126/0406Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 4 weeks ago

Eruption with volcanic ash cloud at 0349 UTC (1249 local). Best estimate of ash-cloud top is around 4253 FT (1329 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south..

View
 

25th of January 2021, 1 month ago

2021-01-25 02:53:00 UTC Orange

Dukono - 20210125/0253Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 4 weeks ago

Eruption with volcanic ash cloud at 2323 UTC (0823 local). Best estimate of ash-cloud top is around 4893 FT (1529 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south..

View
 

24th of January 2021, 1 month ago

2021-01-24 11:19:00 UTC Orange

Raung - 20210124/1119Z 

Mukijo, Raung Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud 1058 UTC ( 1758 Local Time ), Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash moving to east.

View
 

23rd of January 2021, 1 month ago

2021-01-23 09:14:00 UTC Orange

Raung - 20210123/0914Z 

Rudra Wibowo, A.Md., Raung Volcano Observatory - 1 month ago

On 23 januari 2021, eruption with volcanic ash cloud 09:20 UTC ( 16:20 Local Time ), Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12582 FT (3932 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash emission moving to South-Southwest.

View
2021-01-23 00:08:00 UTC Orange

Raung - 20210123/0008Z 

Rudra Wibowo, A.Md., Raung Volcano Observatory - 1 month ago

On 23 januari 2021, eruption with volcanic ash cloud 23:48 UTC ( 06:48 Local Time ), Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash moving to West Southwest.

View
 

22nd of January 2021, 1 month ago

2021-01-22 13:34:00 UTC Orange

Raung - 20210122/1334Z 

Mukijo, Raung Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 1320 UTC (2020 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud moving to east..

View
2021-01-22 00:13:00 UTC Orange

Raung - 20210122/0013Z 

Mukijo, Raung Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0013 UTC (0713 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12262 FT (3832 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud moving to east. .

View
VONA Color Code

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.


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.


Volcano is exhibiting heightened unrest with increased likelihood of eruption with column height below 6000 meter above sea level.


Eruption is forecast to be imminent with significant emission of ash with column height above 6000 meter above sea level.