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
 

17th of August 2020, 1 month ago

2020-08-17 00:15:00 UTC Orange

Dukono - 20200817/0015Z 

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

Eruption with volcanic ash cloud at 2346 UTC (0846 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 north.

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15th of August 2020, 1 month ago

2020-08-15 00:40:00 UTC Yellow

Kerinci - 20200815/0040Z 

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

On 15 Agustus 2020, observed brown ash emission at 00:31 UTC ( 07:31 Local Time ) Best estimate of ash-cloud top is around 14736 FT (4605 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash emission moving Northwest.

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14th of August 2020, 1 month ago

2020-08-14 10:07:00 UTC Red

Sinabung - 20200814/1007Z 

Armen Putra, Sinabung Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 09:56 UTC (16:56 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 21312 FT (6660 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east.

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2020-08-14 09:18:00 UTC Orange

Dukono - 20200814/0918Z 

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

Eruption with volcanic ash cloud at 0918 UTC (1818 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 west.

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2020-08-14 07:54:00 UTC Orange

Sinabung - 20200814/0754Z 

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

Eruption with volcanic ash cloud at 07:55 UTC (14:55 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to east - southeast..

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2020-08-14 07:27:00 UTC Orange

Sinabung - 20200814/0727Z 

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

Eruption with volcanic ash cloud at 07:25 UTC (14:25 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 - southeast..

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2020-08-14 03:33:00 UTC Orange

Sinabung - 20200814/0333Z 

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

Eruption with volcanic ash cloud at 03:30 UTC (10:30 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 14592 FT (4560 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to south - southeast..

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13th of August 2020, 1 month ago

2020-08-13 14:35:00 UTC Orange

Sinabung - 20200813/1435Z 

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

Eruption with volcanic ash cloud at 1430 UTC (2130 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to east - southeast..

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2020-08-13 13:42:00 UTC Orange

Sinabung - 20200813/1342Z 

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

Eruption with volcanic ash cloud at 1315 UTC (2015 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to east - southeast. .

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2020-08-13 08:52:00 UTC Orange

Sinabung - 20200813/0852Z 

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

Eruption with volcanic ash cloud at 0841 UTC (1541 local). Eruption and ash emission is continuing. Ash-cloud not visible. Ash-cloud moving to east - southeast. .

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2020-08-13 08:27:00 UTC Orange

Dukono - 20200813/0827Z 

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

Eruption with volcanic ash cloud at 0749 UTC (1649 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.

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2020-08-13 06:38:00 UTC Yellow

Sinabung - 20200813/0638Z 

Armen Putra, Sinabung Volcano Observatory - 1 month ago

Eruption with ash clouds at 06:08 UTC (13:08 local time). The eruption lasted for 1297 seconds. 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 is moving to the south-Southeast .

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2020-08-13 05:40:00 UTC Yellow

Kerinci - 20200813/0540Z 

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

On 13 Agustus 2020, observed brown ash emission at 05:25 UTC ( 12:25 Local Time ) Best estimate of ash-cloud top is around 14096 FT (4405 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash emission moving East-NorthEast.

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2020-08-13 01:09:00 UTC Orange

Sinabung - 20200813/0109Z 

Nia Haerani, Dr. S.T., M.T., Sinabung Volcano Observatory - 1 month ago

Eruption with volcanic ash cloud at 0802 LT (0102 UTC) 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-southeast-south.

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12th of August 2020, 1 month ago

2020-08-12 23:09:00 UTC Orange

Sinabung - 20200812/2309Z 

Nia Haerani, Dr. S.T., M.T., Sinabung Volcano Observatory - 1 month ago

Eruption with volcanic ash at 0607 local time (2307 UTC) 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-southeast-south.

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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.