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
ETNA2026-03-27 20:30:28Aviation Color Code: GREENDOWNLOAD PDF
ETNA2026-03-27 13:18:47Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2026-03-27 10:35:27Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-26 09:15:06Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-26 08:36:23Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-25 19:26:38Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-23 08:15:43Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-22 11:17:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-03-20 07:10:12Aviation Color Code: GREENDOWNLOAD PDF
STROMBOLI2026-03-20 06:39:04Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-19 14:52:44Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-03-19 04:17:15Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2026-03-18 21:06:30Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-18 01:50:39Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-03-16 13:32:47Aviation Color Code: GREENDOWNLOAD PDF
ETNA2026-03-15 14:17:51Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2026-03-13 12:20:31Aviation Color Code: GREENDOWNLOAD PDF
ETNA2026-03-11 10:36:06Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2026-03-03 11:08:02Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-03-01 17:33:06Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-28 10:39:24Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-27 15:57:24Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-26 07:41:47Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-25 14:25:52Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-24 12:17:09Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-23 01:40:00Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-22 10:15:26Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-02-20 19:05:38Aviation Color Code: ORANGEDOWNLOAD PDF
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
INDIETROAVANTI