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 April 2019, 2 years ago

2019-04-03 09:51:00 UTC Yellow

Kerinci - 20190403/0951Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

Observed brown ash emission at 09:37 UTC (16:37 local time ) Best estimate of ash-cloud top is around 85642 FT (25952 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving northeast..

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30th of March 2019, 2 years ago

2019-03-30 08:32:00 UTC Orange

Kerinci - 20190330/0832Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

Eruption with volcanic ash cloud at 0811 UTC (1511 local). Eruption and ash emission is continuing Best estimate of ash-cloud top is around 46517 FT (14096 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to northeast..

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2019-03-30 08:32:00 UTC Orange

Kerinci - 20190330/0832Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

Eruption with volcanic ash cloud at 0811 UTC (1511 local). Eruption and ash emission is continuing Best estimate of ash-cloud top is around 46517 FT (14096 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to northeast..

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2019-03-30 08:16:00 UTC Yellow

Kerinci - 20190330/0816Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

Observed grey ash emission at 0746 UTC (1456 Local time) Best estimate of ash-cloud top is around 45461 FT (13776 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving to northeast.

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2019-03-30 04:06:00 UTC Yellow

Kerinci - 20190330/0406Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

Observed brown ash emission at 0351 UTC (1051 local time) Best estimate of ash-cloud top is around 45461 FT (13776 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving to north-east.

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19th of March 2019, 2 years ago

2019-03-19 08:00:00 UTC Yellow

Kerinci - 20190319/0800Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

On march 19, 2019 observed grey ash emission at 0750 UTC (1450 Local time) Best estimate of ash-cloud top is around 46517 FT (14096 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emission moving to north-east .

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13th of March 2019, 2 years ago

2019-03-13 11:30:00 UTC Yellow

Kerinci - 20190313/1130Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

On march 13, 2019 observed brown ash emission at 1105 UTC (1805 local) Best estimate of ash-cloud top is around 42293 FT (12816 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash emission moving to Northeast.

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11th of March 2019, 2 years ago

2019-03-11 02:28:00 UTC Yellow

Kerinci - 20190311/0228Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

On March 11, 2019 observed brown ash emission at 0219 UTC (0919 local time) Best estimate of ash-cloud top is around 45461 FT (13776 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emissions moving to northeast.

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10th of March 2019, 2 years ago

2019-03-10 09:48:00 UTC Yellow

Kerinci - 20190310/0948Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

On March 10, 2019 observed brown ash emission at 0907 UTC (1607 local) Best estimate of ash-cloud top is around 43349 FT (13136 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash emission moving to Northeast.

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8th of March 2019, 2 years ago

2019-03-08 09:00:00 UTC Yellow

Kerinci - 20190308/0900Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

On March 8, 2019 observed brown ash emission at 0509 UTC (1209 local time) Best estimate of ash-cloud top is around 47573 FT (14416 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emission moving to west.

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7th of March 2019, 2 years ago

2019-03-07 13:55:00 UTC Yellow

Kerinci - 20190307/1355Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

On March 7, 2019 observed brown ash emission ejected from the vent at 1150 UTC (1850 local time) Best estimate of ash-cloud top is around 41765 FT (12656 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emission moving to north-east.

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13th of February 2019, 2 years ago

2019-02-13 09:28:00 UTC Yellow

Kerinci - 20190213/0928Z 

Hilma Alfianti, S.Si., Kerinci Volcano Observatory - 2 years ago

On 13 February 2019 observed brownish-white ash emission ejected from the vent continuously at 0609 UTC (1309 local) Best estimate of ash-cloud top is around 44405 FT (13456 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emission moving to north-east.

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19th of January 2019, 2 years ago

2019-01-19 03:38:00 UTC Orange

Kerinci - 20190119/0338Z 

Rudra Wibowo, A.Md., Kerinci Volcano Observatory - 2 years ago

Ash cloud at 0034 UTC (0734 local). Best estimate of ash-cloud top is around 42293 FT (12816 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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21st of November 2016, 4 years ago

2016-11-21 02:18:00 UTC Orange

Kerinci - 20161121/0218Z 

Sofyan Primulyana, S.T., M.T., Kerinci Volcano Observatory - 4 years ago

Eruption with volcanic ash cloud at 0131 UTC (0831 local time) Best estimate of ash-cloud top is around 45408 FT (13760 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Dark grey ash-cloud moving to east-northeast..

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16th of November 2016, 4 years ago

2016-11-16 06:16:00 UTC Orange

Kerinci - 20161116/0616Z 

David Adriansyah, S.T., Kerinci Volcano Observatory - 4 years ago

Eruption with volcanic ash cloud at 0539 UTC (1239 local) Best estimate of ash-cloud top is around 50688 FT (15360 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Dark grey ash-cloud moving to north-northeast..

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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.