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
ETNA2021-07-14 10:22:01Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-09 04:57:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-08 20:58:55Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-08 20:21:54Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-07 04:10:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-06 23:09:37Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-06 22:18:36Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-04 18:23:52Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-04 15:34:42Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-04 15:07:52Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-02 04:20:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-01 23:24:04Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-01 22:57:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-28 15:47:12Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-28 14:41:04Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-27 14:53:59Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-27 09:30:29Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-27 08:56:20Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-27 04:35:53Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-26 15:47:54Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-26 14:52:36Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-26 06:11:12Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-25 18:58:32Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-25 18:33:13Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-25 04:34:39Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-06-25 01:11:51Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-25 00:13:32Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-24 10:04:01Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-24 09:29:52Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-06-24 03:40:25Aviation Color Code: ORANGEDOWNLOAD PDF
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
INDIETROAVANTI