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
ETNA2022-02-11 09:10:58Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2022-02-10 23:24:53Aviation Color Code: REDDOWNLOAD PDF
ETNA2022-02-10 21:07:02Aviation Color Code: REDDOWNLOAD PDF
ETNA2022-02-10 18:59:29Aviation Color Code: REDDOWNLOAD PDF
ETNA2022-02-10 04:16:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2022-02-08 16:53:42Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2022-02-04 12:06:13Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2022-02-01 16:05:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2022-01-30 04:22:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2022-01-26 18:46:22Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2022-01-11 17:31:38Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2022-01-04 16:36:44Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-12-28 17:00:57Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-12-21 18:22:02Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-12-15 05:46:42Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-12-14 11:54:45Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-12-08 09:28:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-12-06 10:51:43Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-12-04 16:36:01Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-12-04 08:38:38Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-11-30 15:58:51Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-11-23 14:39:20Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-11-16 16:50:13Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-11-09 16:48:05Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-11-03 12:11:28Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-10-27 16:27:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-10-27 10:03:07Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-10-23 11:04:33Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-10-23 08:54:24Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-10-23 08:39:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-10-20 06:05:48Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-10-19 16:18:05Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-10-12 17:56:34Aviation Color Code: ORANGEDOWNLOAD PDF
VULCANO2021-10-07 14:30:00Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2021-10-05 14:07:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-09-28 14:35:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-09-21 09:30:22Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-09-21 08:04:32Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-09-21 07:10:41Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-09-07 20:11:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-31 20:44:38Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-30 04:15:05Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-29 15:25:32Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-24 15:44:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-17 15:38:05Aviation Color Code: ORANGEDOWNLOAD PDF
INDIETROAVANTI