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
ETNA2026-01-13 15:22:39Aviation Color Code: GREENDOWNLOAD PDF
ETNA2026-01-13 14:30:42Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2026-01-09 12:29:04Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-01-06 11:54:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-01-01 18:27:19Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-29 15:40:22Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-12-29 14:38:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-28 19:43:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-12-28 10:48:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-27 09:37:56Aviation Color Code: REDDOWNLOAD PDF
STROMBOLI2025-12-26 15:18:34Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-26 09:56:48Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-25 22:46:55Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-12-24 18:46:07Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2025-12-23 09:06:43Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-12-22 23:37:56Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-29 19:29:39Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-29 01:11:52Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-17 17:32:18Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-17 07:23:08Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-15 17:40:58Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-13 21:05:20Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-10 14:48:56Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-11-09 12:20:10Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-09-25 07:50:35Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-09-23 13:33:55Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-09-23 06:25:42Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-09-23 06:23:47Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-09-02 14:17:20Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-09-02 14:14:33Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-08-26 04:19:58Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-08-25 19:54:48Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-08-14 10:20:48Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-08-14 01:07:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-08-14 00:54:46Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-08-11 17:52:21Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-08-11 09:44:39Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-08-10 09:18:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-08-10 09:09:41Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-06-19 21:56:58Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-06-19 21:51:13Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-06-19 15:41:35Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-06-19 07:25:15Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-06-19 03:17:43Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-06-19 03:07:42Aviation Color Code: YELLOWDOWNLOAD PDF
 AVANTI