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
 

10th of June 2019, 1 year ago

2019-06-10 08:21:00 UTC Orange

Sinabung - 20190610/0821Z 

Armen Putra, Sinabung Volcano Observatory - 1 year ago

Continuous emission 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. Cloud is moving to East-Southeast .

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9th of June 2019, 1 year ago

2019-06-09 09:48:00 UTC Red

Sinabung - 20190609/0948Z 

Wilfridus F. S. Banggur, S.T., Sinabung Volcano Observatory - 1 year ago

Eruption with volcanic ash cloud to 16:28 local time. Eruption accompany with pyroclastic flow that flows to 3,5 km to south east and 3 km to south Best estimate of ash-cloud top is around 30272 FT (9460 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. direction to south and east.

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27th of May 2019, 1 year ago

2019-05-27 18:41:00 UTC Yellow

Sinabung - 20190527/1841Z 

Armen Putra, Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 18:18 UTC (01:18 local time). The eruption lasted for 152 seconds. Ash-cloud not visible. Ash cloud is moving to southeast-northeast..

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2019-05-27 17:12:00 UTC Orange

Sinabung - 20190527/1712Z 

Armen Putra, Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 16:23 UTC (23:23 local time). The eruption lasted for 756 seconds. Ash-cloud not visible. Ash cloud is moving to southeast-northeast..

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26th of May 2019, 1 year ago

2019-05-26 23:42:00 UTC Orange

Sinabung - 20190526/2342Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 23:29 UTC (06:29 local time). The eruption lasted for 384 seconds. Best estimate of ash-cloud top is around 15872 FT (4960 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to South..

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24th of May 2019, 1 year ago

2019-05-24 20:17:00 UTC Orange

Sinabung - 20190524/2017Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 19:53 UTC (02:53 local time). The eruption lasted for 426 seconds. Ash-cloud not visible. The ashes are not observed because of closed fog.

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12th of May 2019, 1 year ago

2019-05-12 06:09:00 UTC Orange

Sinabung - 20190512/0609Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 05:33 UTC (12:33 local time). The eruption lasted for 28 seconds. Ash-cloud not visible. The ashes are not observed because of closed fog.

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11th of May 2019, 1 year ago

2019-05-11 15:26:00 UTC Orange

Sinabung - 20190511/1526Z 

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

Eruption with ash clouds at 13:39 UTC (20:39 local time). The eruption lasted for 1980 seconds. Ash-cloud not visible. The ashes are not observed because of closed fog.

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7th of May 2019, 1 year ago

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

Sinabung - 20190507/0055Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 1 year ago

Eruption with ash clouds at 23:41 UTC (06:41 local time). The eruption lasted for 2569 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 Southwest..

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15th of June 2018, 2 years ago

2018-06-15 05:15:00 UTC Orange

Sinabung - 20180615/0515Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 2 years ago

Eruption with ash clouds at 00:00 UTC ( 07:00 local time). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 31258 FT (9472 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to east-southeast.

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22nd of June 2018, 2 years ago

2018-06-22 02:14:00 UTC Orange

Sinabung - 20180622/0214Z 

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

Eruption with volcanic ash clouds at 02:06 UTC (09:06 local time). The eruption is still continuing Best estimate of ash-cloud top is around 36538 FT (11072 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash clouds is moving to south-west.

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20th of May 2018, 2 years ago

2018-05-20 14:43:00 UTC Orange

Sinabung - 20180520/1443Z 

Arif Cahyo Purnomo, A.Md., Sinabung Volcano Observatory - 2 years ago

Eruption with ash clouds at 14:22 UTC (21:22 local time). The eruption lasted for 776 seconds. Best estimate of ash-cloud top is around 52378 FT (15872 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to west-southwest.

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19th of May 2018, 2 years ago

2018-05-19 02:11:00 UTC Orange

Sinabung - 20180519/0211Z 

Ardi, Sinabung Volcano Observatory - 2 years ago

Eruption with ash clouds at 02:00 UTC ( 09:00 local time). The eruption lasted for 308 seconds Best estimate of ash-cloud top is around 33370 FT (10112 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to North-west.

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18th of May 2018, 2 years ago

2018-05-18 10:48:00 UTC Orange

Sinabung - 20180518/1048Z 

Armen Putra, Sinabung Volcano Observatory - 2 years ago

Eruption with ash clouds at 10:32 UTC ( 17:32 local time). The eruption lasted for 191 seconds. Best estimate of ash-cloud top is around 36538 FT (11072 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to North-west.

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19th of April 2018, 2 years ago

2018-04-19 09:14:00 UTC Orange

Sinabung - 20180419/0914Z 

Ardi, Sinabung Volcano Observatory - 2 years ago

Eruption with ash clouds started at 09:04 UTC ( 16:04 local time). The eruption still continuing Best estimate of ash-cloud top is around 57658 FT (17472 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud is moving to east-southeast.

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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.