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
ETNA2021-12-04 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
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
ETNA2021-08-10 15:30:30Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-10 09:29:27Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-09 06:19:01Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-09 04:52:58Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-09 01:18:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-08 23:17:02Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-04 17:41:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-04 13:10:30Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-08-03 16:58:33Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-01 05:47:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-08-01 00:12:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-31 21:26:41Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-31 18:28:43Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-27 03:49:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-26 18:48:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-20 12:02:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-20 09:03:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-20 05:49:09Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-20 03:39:08Aviation Color Code: REDDOWNLOAD PDF
 AVANTI