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
 

16th of November 2016, 4 years ago

2016-11-16 04:04:00 UTC Orange

Kerinci - 20161116/0404Z 

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

Eruption with volcanic ash cloud at 0135 UTC (0835 local) Best estimate of ash-cloud top is around 43296 FT (13120 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Brown-grey ash-cloud moving to east-northeast..

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3rd of June 2016, 5 years ago

2016-06-03 08:39:00 UTC Orange

Kerinci - 20160603/0839Z 

David Adriansyah, S.T., Kerinci Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 0135 UTC (0835 local) Best estimate of ash-cloud top is around 83424 FT (25280 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Brown-grey ash-cloud moving to east-northeast..

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4th of May 2016, 5 years ago

2016-05-04 07:26:00 UTC Orange

Kerinci - 20160504/0726Z 

Martanto, S.T., Kerinci Volcano Observatory - 5 years ago

Eruption with volcanic ashclouds at 0943 localtime or 0243 UTC Best estimate of ash-cloud top is around 48576 FT (14720 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud top is around 4600 meter above sea level, Ash-cloud moving west. Source of height data: ground observer..

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30th of March 2016, 5 years ago

2016-03-30 00:42:00 UTC Yellow

Kerinci - 20160330/0042Z 

Martanto, S.T., Kerinci Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 1027 UTC (1727 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 48576 FT (14720 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving eastward; may be higher than what can be observed clearly..

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28th of March 2016, 5 years ago

2016-03-28 06:15:00 UTC Yellow

Kerinci - 20160328/0615Z 

Martanto, S.T., Kerinci Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 0420 UTC (1220 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 46464 FT (14080 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving westward; may be higher than what can be observed clearly..

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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.