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
 

13th of February 2020, 1 week ago

2020-02-13 12:01:00 UTC Orange

Dukono - 20200213/1201Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 week ago

Eruption with volcanic ash cloud at 0946 UTC ( 1846 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 west.

View
 

6th of February 2020, 2 weeks ago

2020-02-06 09:37:00 UTC Orange

Dukono - 20200206/0937Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 2 weeks ago

Eruption with volcanic ash cloud at 0911 UTC ( 1811 local). Best estimate of ash-cloud top is around 5213 FT (1629 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
 

5th of February 2020, 3 weeks ago

2020-02-05 22:27:00 UTC Orange

Dukono - 20200205/2227Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 2 weeks ago

Eruption with volcanic ash cloud at 2219 UTC (0719 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 east..

View
 

24th of January 2020, 1 month ago

2020-01-24 00:29:00 UTC Orange

Dukono - 20200124/0029Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 2303 UTC (0803 local). Best estimate of ash-cloud top is around 6493 FT (2029 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to southwest.

View
 

19th of January 2020, 1 month ago

2020-01-19 04:16:00 UTC Orange

Dukono - 20200119/0416Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0349 UTC ( 1249 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
 

16th of January 2020, 1 month ago

2020-01-16 23:57:00 UTC Orange

Dukono - 20200116/2357Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 2345 UTC (0845 local). Best estimate of ash-cloud top is around 5853 FT (1829 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
 

15th of January 2020, 1 month ago

2020-01-15 23:48:00 UTC Orange

Dukono - 20200115/2348Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 2246 UTC (0746 local). Best estimate of ash-cloud top is around 5213 FT (1629 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to southeast..

View
 

14th of January 2020, 1 month ago

2020-01-14 23:57:00 UTC Orange

Dukono - 20200114/2357Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 2235 UTC (0735 local). Best estimate of ash-cloud top is around 5533 FT (1729 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
 

3rd of January 2020, 1 month ago

2020-01-03 08:03:00 UTC Orange

Dukono - 20200103/0803Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0759 UTC (1659 local). Best estimate of ash-cloud top is around 5533 FT (1729 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
 

2nd of January 2020, 1 month ago

2020-01-02 23:57:00 UTC Orange

Dukono - 20200102/2357Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 2347 UTC (0847 local). Best estimate of ash-cloud top is around 5853 FT (1829 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
 

30th of December 2019, 1 month ago

2019-12-30 09:23:00 UTC Orange

Dukono - 20191230/0923Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0913 UTC (1813 local). Best estimate of ash-cloud top is around 5853 FT (1829 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
 

29th of December 2019, 1 month ago

2019-12-29 06:53:00 UTC Orange

Dukono - 20191229/0653Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0549 UTC ( 1449 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. -cloud moving to southwest..

View
 

25th of December 2019, 2 months ago

2019-12-25 00:12:00 UTC Orange

Dukono - 20191225/0012Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 2 months ago

Eruption with volcanic ash cloud at 0005 UTC 0905 local). Best estimate of ash-cloud top is around 5853 FT (1829 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
 

18th of December 2019, 2 months ago

2019-12-18 01:02:00 UTC Orange

Dukono - 20191218/0102Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 2 months ago

Eruption with volcanic ash cloud at 2342 UTC ( 0842 local). Best estimate of ash-cloud top is around 6173 FT (1929 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
 

17th of December 2019, 2 months ago

2019-12-17 00:55:00 UTC Orange

Dukono - 20191217/0055Z 

Pretina Sitinjak, S.T., Dukono Volcano Observatory - 2 months ago

Eruption with volcanic ash cloud at 0035 UTC (0910 local). Best estimate of ash-cloud top is around 5853 FT (1829 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.