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
ETNA2019-01-22 12:57:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2019-01-08 08:58:04Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2018-12-25 10:04:43Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2018-12-24 19:10:47Aviation Color Code: REDDOWNLOAD PDF
ETNA2018-12-24 16:00:51Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2018-12-24 11:01:30Aviation Color Code: REDDOWNLOAD PDF
ETNA2018-12-06 11:16:27Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2018-09-01 10:26:05Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2018-08-24 17:04:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2018-08-24 08:35:29Aviation Color Code: REDDOWNLOAD PDF
ETNA2018-08-23 19:23:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2018-07-18 16:58:44Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2018-05-13 15:34:25Aviation Color Code: GREENDOWNLOAD PDF
ETNA2018-05-13 11:52:06Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2018-05-11 22:59:33Aviation Color Code: GREENDOWNLOAD PDF
ETNA2018-05-11 20:04:06Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2018-04-16 13:21:11Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-11-24 03:54:07Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-11-23 12:01:17Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-11-22 23:34:29Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-06-20 14:42:37Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-06-06 13:00:29Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-06-01 09:36:10Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-05-26 06:23:34Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-05-22 10:07:04Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-05-12 13:31:57Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-04-29 09:24:44Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-04-28 09:47:24Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-04-27 12:46:35Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-04-27 03:46:46Aviation Color Code: REDDOWNLOAD PDF
ETNA2017-04-26 22:37:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-04-26 18:34:17Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-04-26 14:41:44Aviation Color Code: GREENDOWNLOAD PDF
ETNA2017-04-22 06:44:49Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-04-19 10:02:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-04-16 15:29:13Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-04-13 20:23:01Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-04-10 10:23:23Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-03-20 12:18:16Aviation Color Code: YELLOWDOWNLOAD PDF
ETNA2017-03-18 13:32:06Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-03-17 22:16:45Aviation Color Code: REDDOWNLOAD PDF
ETNA2017-03-17 11:10:32Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-03-17 06:58:21Aviation Color Code: REDDOWNLOAD PDF
ETNA2017-03-17 05:14:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2017-03-16 14:17:46Aviation Color Code: REDDOWNLOAD PDF
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