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
ETNA2026-11-08 11:44:19Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2026-11-03 18:02:02Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-11-03 08:02:09Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-11-02 12:19:01Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-10-30 14:46:27Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-10-30 08:30:16Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-10-29 06:56:30Aviation Color Code: REDDOWNLOAD PDF
ETNA2026-10-27 11:52:34Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-10-27 10:15:19Aviation Color Code: YELLOWDOWNLOAD PDF
STROMBOLI2026-10-20 15:47:52Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-10-19 06:24:34Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-10-16 12:27:58Aviation Color Code: GREENDOWNLOAD PDF
STROMBOLI2026-10-13 08:30:31Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-10-12 20:10:20Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-10-06 12:40:37Aviation Color Code: ORANGEDOWNLOAD PDF
STROMBOLI2026-10-05 14:04:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2026-10-03 06:29:23Aviation Color Code: YELLOWDOWNLOAD PDF
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
 AVANTI