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
ETNA2021-02-16 17:38:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-16 17:05:25Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-16 16:31:13Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-09 16:56:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-02 15:56:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-01-26 16:34:48Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-01-19 05:46:30Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-01-18 20:21:37Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-01-07 08:30:36Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-01-06 09:51:19Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-01-04 11:26:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-01-04 08:42:16Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-30 20:57:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-22 05:53:36Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-22 05:15:18Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-21 14:14:44Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-21 09:34:36Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-15 09:06:23Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-15 07:46:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-14 15:52:44Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-14 13:47:15Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-14 06:41:00Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-13 22:39:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-12-09 15:39:54Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-12-01 14:03:14Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-11-24 13:05:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-11-17 19:00:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-11-10 17:06:15Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-11-03 17:45:53Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-27 15:35:13Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-23 08:08:42Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-23 05:53:24Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-10-20 15:14:15Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-13 15:42:35Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-08 04:51:47Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-07 16:52:37Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-10-07 16:03:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-07 06:30:43Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-10-06 14:57:08Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-01 08:57:03Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-10-01 06:12:33Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-09-29 14:26:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-09-26 16:12:11Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-09-26 14:13:18Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-09-22 14:20:21Aviation Color Code: ORANGEDOWNLOAD PDF
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