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
 

11th of February 2017, 5 years ago

2017-02-11 08:55:00 UTC Orange

Sinabung - 20170211/0855Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 08:46 UTC (15:46 local time). The eruption lasted for 257 seconds Best estimate of ash-cloud top is around 47098 FT (14272 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 - Southeast.

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2017-02-11 08:34:00 UTC Orange

Sinabung - 20170211/0834Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 08:27 UTC (15:27 local time). The eruption lasted for 120 seconds 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. Ash cloud is not observed .

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2017-02-11 03:27:00 UTC Orange

Sinabung - 20170211/0327Z 

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

Eruption with ash clouds at 03:19 UTC (10:19 local time). The eruption lasted for 214 seconds. Best estimate of ash-cloud top is around 47098 FT (14272 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to west-southwest..

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2017-02-11 02:14:00 UTC Orange

Sinabung - 20170211/0214Z 

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

Eruption with ash clouds at 02:08 UTC (09:08 local time). The eruption lasted for 112 seconds. Best estimate of ash-cloud top is around 37594 FT (11392 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-shoutwest .

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2017-02-11 02:01:00 UTC Orange

Sinabung - 20170211/0201Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 01:52 UTC (08:52 local time). The eruption lasted for 153 seconds. Best estimate of ash-cloud top is around 42874 FT (12992 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to west-southwest..

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2017-02-11 00:34:00 UTC Orange

Dukono - 20170211/0034Z 

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

Eruption with volcanic ash cloud at 2339 UTC (0839 local time). 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. White to dark-grey ash cloud moving to Southeast..

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2017-02-11 00:18:00 UTC Orange

Sinabung - 20170211/0018Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 00:09 UTC (07:09 local time). The eruption lasted for 143 seconds. Best estimate of ash-cloud top is around 42874 FT (12992 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-shoutwest .

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10th of February 2017, 5 years ago

2017-02-10 22:17:00 UTC Orange

Sinabung - 20170210/2217Z 

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

Eruption with volcanic ash cloud at 2210 UTC (0510 local). Eruption and ash emission is 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-cloud moving to west-southwest..

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2017-02-10 08:23:00 UTC Orange

Sinabung - 20170210/0823Z 

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

Eruption with ash clouds at 08:18 UTC (15:18 local time). The eruption lasted for 173 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 south-shoutwest .

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8th of February 2017, 5 years ago

2017-02-08 22:58:00 UTC Orange

Dukono - 20170208/2258Z 

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

Eruption with volcanic ash cloud at 2230 UTC (0730 local time). Eruption and ash emission is contiunuing. 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. White to dark-grey ash cloud moving to East..

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2017-02-08 04:54:00 UTC Orange

Sinabung - 20170208/0454Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with volcanic ash cloud at 0448 UTC (1148 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 62938 FT (19072 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to southeast..

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2017-02-08 02:44:00 UTC Orange

Sinabung - 20170208/0244Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 02:35 UTC (09:35 local time). The eruption lasted for 313 seconds. 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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2017-02-08 02:44:00 UTC Orange

Sinabung - 20170208/0244Z 

Armen Putra, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 02:35 UTC (09:35 local time). The eruption lasted for 313 seconds. 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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7th of February 2017, 5 years ago

2017-02-07 01:05:00 UTC Orange

Sinabung - 20170207/0105Z 

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

Eruption with ash clouds at 00:58 UTC (07:58 local time). The eruption lasted for 203 seconds Best estimate of ash-cloud top is around 47098 FT (14272 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Ash-cloud moving to east..

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6th of February 2017, 5 years ago

2017-02-06 03:27:00 UTC Orange

Sinabung - 20170206/0327Z 

Ardi, Sinabung Volcano Observatory - 5 years ago

Eruption with ash clouds at 03:19 UTC (10:19 local time). The eruption lasted for 288 seconds Best estimate of ash-cloud top is around 47098 FT (14272 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 .

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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.