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 March 2017, 5 years ago

2017-03-16 01:26:00 UTC Orange

Dukono - 20170316/0126Z 

Novia Antika Anggraeni, S.Si., Dukono Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 2313 UTC (0713 local). Eruption and ash emission is continuing Best estimate of ash-cloud top is around 21427 FT (6493 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. White to dark-grey ash-cloud moving to Southeast.

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15th of March 2017, 5 years ago

2017-03-15 04:58:00 UTC Orange

Sinabung - 20170315/0458Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 4:50 UTC (11:50 local time). The eruption lasted for 168 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..

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14th of March 2017, 5 years ago

2017-03-14 03:13:00 UTC Orange

Sinabung - 20170314/0313Z 

Deri Al Hidayat, A.Md., Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 03:05 UTC (10:05 local time). The eruption lasted for 290 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..

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13th of March 2017, 5 years ago

2017-03-13 02:41:00 UTC Orange

Sinabung - 20170313/0241Z 

Deri Al Hidayat, A.Md., Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 02:33 UTC (09:33 local time). The eruption lasted for 219 seconds. 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 west-northwest..

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12th of March 2017, 5 years ago

2017-03-12 06:45:00 UTC Orange

Sinabung - 20170312/0645Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 06:41 UTC (13:41 local time). The eruption lasted for 139 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 west-southwest.

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2017-03-12 04:27:00 UTC Orange

Sinabung - 20170312/0427Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 04:22 UTC (11:22 local time). The eruption is lasted 293 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 west.

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2017-03-12 00:35:00 UTC Orange

Sinabung - 20170312/0035Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 00:29 UTC (07:29 local time). The eruption lasted for 242 seconds. Best estimate of ash-cloud top is around 38650 FT (11712 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.

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11th of March 2017, 5 years ago

2017-03-11 22:17:00 UTC Orange

Dukono - 20170311/2217Z 

Nia Haerani, Dr. S.T., M.T., Dukono Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 2124 UTC (0624 local). Best estimate of ash-cloud top is around 21427 FT (6493 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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2017-03-11 12:36:00 UTC Orange

Sinabung - 20170311/1236Z 

Moh Nurul Asrori, A.Md., Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 12:28 UTC (19:28 local time). The eruption lasted for 339 seconds Best estimate of ash-cloud top is around 41818 FT (12672 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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2017-03-11 07:52:00 UTC Orange

Sinabung - 20170311/0752Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 07:45 UTC (14:45 local time). The eruption lasted for 316 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 south.

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2017-03-11 00:18:00 UTC Orange

Sinabung - 20170311/0018Z 

Deri Al Hidayat, A.Md., Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 00:10 UTC (07:10 local time). The eruption lasted for 246 seconds. Best estimate of ash-cloud top is around 55546 FT (16832 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..

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10th of March 2017, 5 years ago

2017-03-10 22:45:00 UTC Orange

Dukono - 20170310/2245Z 

Nia Haerani, Dr. S.T., M.T., Dukono Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 2305 UTC (0705 local). Best estimate of ash-cloud top is around 16147 FT (4893 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash cloud moving to north. Volcanic ash fell at observatory post (11 Km from active crater)..

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2017-03-10 00:16:00 UTC Orange

Sinabung - 20170310/0016Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 00:08 UTC (07:08 local time). The eruption lasted for 150 seconds Best estimate of ash-cloud top is around 44986 FT (13632 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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9th of March 2017, 5 years ago

2017-03-09 22:20:00 UTC Orange

Dukono - 20170309/2220Z 

Devy Kamil Syahbana, Dr., S.Si., Dukono Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 2209 UTC (0709 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 15091 FT (4573 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud is moving east..

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2017-03-09 02:42:00 UTC Orange

Sinabung - 20170309/0242Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 02:36 UTC (09:36 local time). The eruption lasted for 95 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-northwest.

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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.