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
ETNA2021-06-01 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
ETNA2021-05-28 06:36:11Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-27 14:02:16Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-27 11:52:57Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-27 11:00:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-26 13:36:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-26 10:50:04Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-26 08:29:10Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-26 07:45:51Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-26 04:07:22Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-26 01:27:10Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-25 22:18:25Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-25 18:27:10Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-25 16:31:34Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-25 10:56:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-25 08:35:55Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-24 22:48:07Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-24 20:44:07Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-22 22:43:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-22 20:42:18Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-22 18:35:17Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-21 03:07:10Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-21 01:05:52Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-21 00:58:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-05-19 05:19:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-19 01:21:17Aviation Color Code: REDDOWNLOAD PDF
STROMBOLI2021-05-17 12:52:45Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-05-11 20:42:08Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-27 20:20:06Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-20 14:31:40Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-13 15:44:49Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-02 08:42:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-01 12:46:33Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-04-01 09:32:18Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-04-01 07:47:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-04-01 01:03:05Aviation Color Code: REDDOWNLOAD PDF
INDIETROAVANTI