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
ETNA2025-04-30 03:01:52Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-29 22:31:50Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-23 06:06:45Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-04-23 05:07:13Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-22 18:25:32Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-22 18:12:40Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-20 07:04:15Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-19 06:46:17Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-18 17:31:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-15 17:52:21Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-15 08:06:46Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-15 07:45:22Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-12 06:12:39Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-11 17:09:54Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-04-11 17:01:05Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-11 14:25:15Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-11 13:50:49Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-08 15:52:54Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-08 08:11:36Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-08 04:18:13Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-04-08 00:03:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-04-07 23:31:05Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-04 06:38:31Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-03 12:29:41Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-04-03 09:30:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-03 06:30:13Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-04-03 04:15:51Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-04-02 20:29:58Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-04-01 16:22:10Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-24 17:55:13Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-03-24 10:18:03Aviation Color Code: REDDOWNLOAD PDF
ETNA2025-03-24 07:53:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-03-24 07:07:39Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-21 09:13:57Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-03-21 09:02:48Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-19 22:08:12Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-03-19 21:54:29Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-17 15:42:16Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-03-17 07:41:42Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-15 19:47:39Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2025-03-15 19:32:35Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2025-03-05 17:39:36Aviation Color Code: GREENDOWNLOAD PDF
ETNA2025-03-05 10:52:57Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2025-03-01 14:20:28Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2025-02-28 12:53:30Aviation Color Code: ORANGEDOWNLOAD PDF
 AVANTI