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
 

25th of November 2020, 3 days ago

2020-11-25 10:45:00 UTC Orange

Sinabung - 20201125/1045Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 2 days ago

Eruption with volcanic ash cloud at 1034 UTC (1734 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 south - west..

View
 

21st of November 2020, 1 week ago

2020-11-21 14:39:00 UTC Orange

Sinabung - 20201121/1439Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 6 days ago

Eruption with volcanic ash cloud at 1437 UTC (2137 local). Ash-cloud not visible. volcano cloudy.

View
 

18th of November 2020, 1 week ago

2020-11-18 06:45:00 UTC Orange

Sinabung - 20201118/0645Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 1 week ago

Eruption with volcanic ash cloud at 0644 UTC (1344 local). Best estimate of ash-cloud top is around 11072 FT (3460 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south-west..

View
 

10th of November 2020, 2 weeks ago

2020-11-10 09:56:00 UTC Orange

Sinabung - 20201110/0956Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 2 weeks ago

Eruption with volcanic ash cloud and pyroclastic flow at 0950 UTC (1650 local) Best estimate of ash-cloud top is around 14272 FT (4460 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east southeast and pyroclastic flow to southeast as far as 2500 meters.

View
 

4th of November 2020, 3 weeks ago

2020-11-04 13:24:00 UTC Orange

Sinabung - 20201104/1324Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud at 1320 UTC (2020 local). Eruption and ash emission 117 second Ash-cloud not visible. visibility is unavailable.

View
 

2nd of November 2020, 3 weeks ago

2020-11-02 17:24:00 UTC Orange

Sinabung - 20201102/1724Z 

Armen Putra, Sinabung Volcano Observatory - 3 weeks ago

Eruption with volcanic ash cloud at 16:58 UTC (23:58 local). Eruption and ash emission Best estimate of ash-cloud top is around 12672 FT (3960 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
 

4th of September 2020, 2 months ago

2020-09-04 22:34:00 UTC Orange

Sinabung - 20200904/2234Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 2 months ago

Eruption with volcanic ash cloud at 22:13 UTC (05:13 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 10432 FT (3260 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to north-northeast.

View
 

31st of August 2020, 2 months ago

2020-08-31 02:42:00 UTC Orange

Sinabung - 20200831/0242Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 2 months ago

Eruption with volcanic ash cloud at 02:28 UTC (09:28 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 11072 FT (3460 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to East-northeast.

View
 

25th of August 2020, 3 months ago

2020-08-25 06:25:00 UTC Orange

Sinabung - 20200825/0625Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 06:22 UTC (13:22 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 10432 FT (3260 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to west-nortthwest.

View
2020-08-25 03:53:00 UTC Orange

Sinabung - 20200825/0353Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 03:50 UTC (10:50 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to west-nortthwest.

View
 

23rd of August 2020, 3 months ago

2020-08-23 01:20:00 UTC Orange

Sinabung - 20200823/0120Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 00:41 UTC (07:41 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12672 FT (3960 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
 

20th of August 2020, 3 months ago

2020-08-20 22:32:00 UTC Orange

Sinabung - 20200820/2232Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 22:17 UTC (05:17 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to east - southeast..

View
 

19th of August 2020, 3 months ago

2020-08-19 11:24:00 UTC Red

Sinabung - 20200819/1124Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 11:23 UTC (18:23 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 20672 FT (6460 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east-southeast.

View
 

17th of August 2020, 3 months ago

2020-08-17 10:41:00 UTC Orange

Sinabung - 20200817/1041Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 10:24 UTC (17:24 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12672 FT (3960 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south-east.

View
2020-08-17 10:41:00 UTC Orange

Sinabung - 20200817/1041Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 3 months ago

Eruption with volcanic ash cloud at 10:24 UTC (17:24 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 12672 FT (3960 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south-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.