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
ETNA2021-06-23 18:51:19Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-23 18:16:20Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-23 05:42:36Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-23 03:18:12Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-23 01:25:33Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-22 06:29:35Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-22 03:19:12Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-22 03:05:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-22 02:40:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-21 04:24:44Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-20 22:19:12Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-20 22:01:41Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-20 04:14:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-19 19:18:12Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-19 18:52:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-18 03:49:05Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-17 23:20:27Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-17 05:42:40Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-16 13:11:37Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-16 12:04:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-16 11:43:26Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-15 15:01:41Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-15 03:46:29Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-14 21:50:56Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-14 21:31:05Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-13 04:36:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-12 19:50:04Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-12 13:28:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-08 19:01:28Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-05 11:54:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-04 20:55:52Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-04 16:52:25Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-04 16:22:44Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-02 14:05:34Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-02 08:40:07Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-01 16:26:31Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-30 09:52:41Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-30 04:55:26Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-30 04:07:07Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-29 04:22:31Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-28 19:36:54Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-28 18:37:46Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-28 15:58:47Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-28 09:08:34Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-28 06:52:32Aviation Color Code: REDDOWNLOAD PDF
INDIETROAVANTI