Overall Orange Volcanic eruption for Lewotobi in Indonesia on 14 Oct 2025 22:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Orange Volcanic eruption for Lewotobi

in Indonesia

Volcano Ash Advisories for air traffic

Although Volcano Ash Advisories (VAAC) are not intended for assessing humanitarian impact, the observations of the plume are relevant for understanding local impact. The actual impact (like ash fall) depends on the type of eruption and is not known.

Click on the messages list to visualize on the right the detailed text.

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

18/10 03:45 2025-649 DARWIN

17/10 23:50 2025-648 DARWIN

17/10 17:50 2025-647 DARWIN

17/10 04:20 2025-646 DARWIN

16/10 22:20 2025-645 DARWIN

16/10 18:16 2025-644 DARWIN

16/10 06:20 2025-643 DARWIN

16/10 00:20 2025-642 DARWIN

15/10 21:20 2025-641 DARWIN

15/10 18:20 2025-640 DARWIN

15/10 15:20 2025-639 DARWIN

15/10 12:20 2025-638 DARWIN

15/10 10:00 2025-637 DARWIN

15/10 07:00 2025-636 DARWIN

15/10 04:00 2025-635 DARWIN

15/10 02:50 2025-634 DARWIN

15/10 01:56 2025-633 DARWIN

15/10 01:00 2025-632 DARWIN

14/10 22:00 2025-631 DARWIN

10/10 12:20 2025-615 DARWIN

10/10 06:25 2025-614 DARWIN

10/10 00:25 2025-613 DARWIN

Volcanic Ash Advisory issued on 2025-10-18 at 03:45 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 180 (5400m) move w last observation before a break in coverage at a manual station observation 17 2130 UTC.
Volcanic ash from earlier eruption no longer discernible, assumed to have dissipated. No further reports of eruptions. Advisory terminated.

Original Message :

Volcanic Ash Advisory issued on 2025-10-17 at 23:50 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 180 (5400m) move w last observation before a break in coverage at a manual station observation 17 2130 UTC.
Volcanic ash obscured by meteorological cloud, last observation before a break in coverage at a manual station clearly observation at 17 2130 UTC on rgb satellite img meteorological cloud. Cvghm reported eruption at 17/1644z. Volcanic ash expected to dissipate 3 hours. Height and forecast estimated from last observation before a break in coverage at a manual station obs, satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-17 at 17:50 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 180 (5400m) move w.
Volcanic ash identifiable on satellite imagery. Cvghm reported eruption at 17/1644z. Volcanic ash expected to dissipate 6 to 12 hours. Volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-17 at 04:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 170 (5100m) last observation before a break in coverage at a manual station observation at 17 0350 UTC move w.
Current satellite imagery indicates that volcanic ash has now dissipated. No reports of new or ongoing eruption. Advisory terminated.

Original Message :

Volcanic Ash Advisory issued on 2025-10-16 at 22:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 170 (5100m) observation at 16 2200 UTC move w.
Discrete volcanic ash emission identifiable on current satellite img. Cvghm report eruption to 4000m above summit at 16/1741z. Volcanic ash expected to dissipate 6-12hrs. Height based on ground report and infrared temperature of -1 degrees. Movement based on model guidance and satellite img.

Original Message :

Volcanic Ash Advisory issued on 2025-10-16 at 18:16 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 170 (5100m) observation at 16 1800 UTC.
Cvghm report eruption to 4000m above summit. Discrete volcanic ash emission identifiable on current satellite img move w. Volcanic ash expected to dissipate 6-12hrs. Height based on ground report and infrared temperature of -1 degrees, movement based on model guidance and satellite img.

Original Message :

Volcanic Ash Advisory issued on 2025-10-16 at 06:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 220 (6600m) last observation before a break in coverage at a manual station observation at 16 0400 UTC move w.
Current satellite imagery indicates that volcanic ash has dissipated. No reports of new or ongoing eruption. Advisory terminated.

Original Message :

Volcanic Ash Advisory issued on 2025-10-16 at 00:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 220 (6600m) move w observation at 16 0000 UTC.
Volcanic ash to flight level 220 (6600m) observed on satellite imagery move w. Volcanic ash expected to dissipate volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 21:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 220 (6600m) move nw observation at 15 2100 UTC.
Volcanic ash to flight level 220 (6600m) observed on satellite imagery move nw. Volcanic ash expected to dissipate volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 18:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 220 (6600m) move nw observation at 15 1500 UTC.
Volcanic ash to flight level 220 (6600m) nw from summit observed on satellite imagery. Volcanic ash expected to dissipate volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 15:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 220 (6600m) move nw observation at 15 1500 UTC.
Volcanic ash to flight level 220 (6600m) nw from summit observed on satellite imagery. Volcanic ash expected to dissipate volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 12:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 150 (4500m) move nw, flight level 220 (6600m) move nw observation at 15 1200 UTC.
Volcanic ash to flight level 150 (4500m) move to nw from summit, expected to dissipate 3-6 hours. Volcanic ash to flight level 220 (6600m) nw from summit, expected to dissipate volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 10:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 150 (4500m) move nw, flight level 220 (6600m) move north observation at 15 0940 UTC.
Volcanic ash to flight level 150 (4500m) move to nw from summit, expected to dissipate volcanic ash to flight level 220 (6600m) near summit in light winds, expected to dissipate 12-18hrs. Volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 07:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 150 (4500m) move nw, flight level 220 (6600m) move north observation at 15 0640 UTC.
Volcanic ash to flight level 150 (4500m) move to nw from summit, expected to dissipate volcanic ash to flight level 220 (6600m) near summit in light winds, expected to dissipate 12-18hrs. Volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 04:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Cvghm report ongoing eruption. Volcanic ash to flight level 150 (4500m) move nw, flight level 220 (6600m) move north.
Continuous volcanic ash to flight level 150 (4500m) extending to nw from summit, expected to dissipate 6-12hrs. Volcanic ash to flight level 220 (6600m) near summit in light volcanic ash height and forecast based on satellite img and model guidance and ground report.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 02:50 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Continuous volcanic ash to flight level 150 (4500m) ext nw. Volcanic ash observation to 180, flight level 220 (6600m) move nw.
Volcanic ash to flight level 150 (4500m) extending to nw from summit. Volcanic ash to flight level 220 (6600m) near summit in light winds, volcanic ash to flight level 180 (5400m) moving to wnw away from summit and becoming diffuse, expected to dissipate volcanic ash height and forecast based on satellite img and model guidance and ground rep.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 01:56 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Cvghm report eruption to flight level 310 (9300m) at 15 0035 UTC.
Cvghm report volcanic ash to flight level 310 (9300m) updated advisory to volcanic ash to flight level 220 (6600m) near summit in light winds, volcanic ash to flight level 180 (5400m) moving to wnw away from summit and becoming diffuse, expected to dissipate over 6-12hrs. Volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-15 at 01:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash observation to flight level 180 (5400m) at 15 0040 UTC move nw, volcanic ash to flight level 220 (6600m) move nw.
Volcanic ash discernible on latest satellite img. Volcanic ash to flight level 220 (6600m) near summit in light winds, volcanic ash to flight level 180 (5400m) moving to wnw away from summit and becoming diffuse, expected to dissipate over 6-12hrs. Volcanic ash height and forecast based on satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-14 at 22:00 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash observation to flight level 180 (5400m) at 14 2140 UTC move wnw, volcanic ash to flight level 220 (6600m) near summit.
Volcanic ash discernible on latest satellite img. Volcanic ash to flight level 220 (6600m) lingering near summit in light winds, volcanic ash to flight level 180 (5400m) moving to wnw away from summit and becoming diffuse, expected to dissipate over volcanic ash height and forecast based on gr. Report, satellite img and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-10 at 12:20 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 80 (2400m) rep at 10 0727 UTC.
Area obscure by meteorological cloud. Cvghm rep discrete volcanic ash to 800m above summit. Expected to dissipate in 3-6 hours. Height and forecast based on ground reports and model guidance.

Original Message :

Volcanic Ash Advisory issued on 2025-10-10 at 06:25 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 80 (2400m) last observation before a break in coverage at a manual station reported at 09 1825 UTC move southwest.
Volcanic ash not identifiable on recent satellite img due to meteorological cloud obscuration. Volcanic ash is expected to dissipate volcanic ash height and forecast based on ground report and model data.

Original Message :

Volcanic Ash Advisory issued on 2025-10-10 at 00:25 UTC.

Key information extracted from original VAA message :

Aviation Colour Code :

Volcanic ash to flight level 80 (2400m) last observation before a break in coverage at a manual station reported at 09 1825 UTC move southwest.
Volcanic ash not identifiable on recent satellite img due to meteorological cloud obscuration. Volcanic ash height and forecast based on ground report and model data.

Original Message :

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