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
 

1st of November 2019, 1 year ago

2019-11-01 23:12:00 UTC Yellow

Kerinci - 20191101/2312Z 

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

Observed brown ash emission at 22:53 UTC (05:53 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 east-southeast.

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31st of October 2019, 1 year ago

2019-10-31 23:01:00 UTC Yellow

Kerinci - 20191031/2301Z 

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

Observed brown ash emission at 22:43 UTC (05:43 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 east-southeast.

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30th of October 2019, 1 year ago

2019-10-30 11:16:00 UTC Orange

Kerinci - 20191030/1116Z 

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

Observed brown ash emission at 10:21 UTC (17:21 local time) Best estimate of ash-cloud top is around 48629 FT (14736 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving West-Southwest.

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2019-10-30 11:16:00 UTC Orange

Kerinci - 20191030/1116Z 

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

Observed brown ash emission at 10:21 UTC (17:21 local time) Best estimate of ash-cloud top is around 48629 FT (14736 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving West-Southwest.

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29th of October 2019, 1 year ago

2019-10-29 23:27:00 UTC Yellow

Kerinci - 20191029/2327Z 

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

Observed brownish white ash emission at 23:14 UTC (06:14 local time) Best estimate of ash-cloud top is around 48629 FT (14736 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash plume moving to east-southeast-northeast.

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6th of October 2019, 1 year ago

2019-10-06 06:06:00 UTC Yellow

Kerinci - 20191006/0606Z 

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

Observed brown ash emission at 05:53 UTC (12:53 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 plume moving to west-southwest.

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31st of July 2019, 2 years ago

2019-07-31 05:55:00 UTC Orange

Kerinci - 20190731/0555Z 

Martanto, S.T., Kerinci Volcano Observatory - 2 years ago

Eruption with volcanic ash cloud at 0548 UTC (1248 local). Best estimate of ash-cloud top is around 48629 FT (14736 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..

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6th of June 2019, 2 years ago

2019-06-06 23:42:00 UTC Orange

Kerinci - 20190606/2342Z 

Irwan Safwan, S.T., Kerinci Volcano Observatory - 2 years ago

Grey ash emission observed at 2304 UTC (0604 Local) Best estimate of ash-cloud top is around 48629 FT (14736 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash moving to east.

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10th of May 2019, 2 years ago

2019-05-10 11:56:00 UTC Orange

Kerinci - 20190510/1156Z 

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

Brown ash emission observed at 1104 UTC (1804 Local) 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 moving to East-Southeast..

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4th of May 2019, 2 years ago

2019-05-04 10:25:00 UTC Orange

Kerinci - 20190504/1025Z 

Martanto, S.T., Kerinci Volcano Observatory - 2 years ago

Brown ash emission observed at 1008 UTC (1708 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 moving to southeast..

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3rd of May 2019, 2 years ago

2019-05-03 11:58:00 UTC Orange

Kerinci - 20190503/1158Z 

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

Observed brown ash emission at 1136 UTC (1836 local time) Best estimate of ash-cloud top is around 48629 FT (14736 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. ash emission moving to east-southeast.

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2nd of May 2019, 2 years ago

2019-05-02 14:23:00 UTC Orange

Kerinci - 20190502/1423Z 

Nia Haerani, Dr. S.T., M.T., Kerinci Volcano Observatory - 2 years ago

Volcanic ash fall has been reported by local resident at 0207 UTC (2107 local time). Best estimate of ash-cloud top is around 0 FT (0 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Thin volcanic ash fall at south and northeast flank about 7 km from the summit..

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13th of April 2019, 2 years ago

2019-04-13 23:46:00 UTC Yellow

Kerinci - 20190413/2346Z 

Irwan Safwan, S.T., Kerinci Volcano Observatory - 2 years ago

Observed brown ash emission at 23.29 UTC (06.29 Local Time) 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 Plume moving norteast.

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2019-04-13 23:46:00 UTC Yellow

Kerinci - 20190413/2346Z 

Irwan Safwan, S.T., Kerinci Volcano Observatory - 2 years ago

Observed brown ash emission at 23.29 UTC (06.29 Local Time) 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 Plume moving norteast.

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2019-04-13 09:36:00 UTC Yellow

Kerinci - 20190413/0936Z 

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

Observed brown ash emission at 0859 UTC (1559 Local time ) 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 Plume moving to 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.