Volcano Observatory Notices for Aviation (VONA)
Volcano Observatory Notices for Aviation (VONA) are succinct, plain-English messages aimed at dispatchers, pilots, and air-traffic controllers to inform them of volcanic unrest and eruptive activity that could produce ash-cloud hazards.


DISCLAIMER
Using volcanic cloud height data for publication is only allowed if the following papers are cited:
VOLCANO
DATE
DESCRIPTION
FILE TYPE
STROMBOLI2026-10-01 15:33:00Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-10-01 07:37:04Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-29 07:51:19Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-29 05:25:01Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-28 16:22:46Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-26 06:33:43Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-24 05:19:28Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-22 16:04:09Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-18 05:16:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-16 18:11:53Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-15 16:37:42Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-14 04:43:24Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-11 07:10:16Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-10 09:11:21Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-10 05:36:44Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-09 09:57:55Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-08 05:19:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-07 18:48:20Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-07 09:48:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-07 06:12:00Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-06 15:48:40Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-06 09:34:02Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-06 06:13:37Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-04 12:40:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-09-01 07:12:42Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-09-01 07:08:34Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2026-08-26 06:44:05Aviation Color Code: GREENDOWNLOAD PDF
ETNA2026-08-24 07:27:46Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2026-08-20 08:03:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-19 03:52:16Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-18 07:24:37Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-16 20:15:49Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-08-16 18:49:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-16 08:42:41Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-15 09:21:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-15 08:52:46Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-08-15 06:29:51Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-11 13:00:27Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-08-09 14:19:40Aviation Color Code: REDDOWNLOAD PDF
STROMBOLI2026-08-09 10:11:35Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-08 13:52:43Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-08-08 07:54:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-08 00:18:57Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-08-07 17:52:22Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-08-07 12:05:18Aviation Color Code: REDDOWNLOAD PDF
 AVANTI