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
ETNA2021-03-19 08:16:47Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-17 10:08:16Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-17 09:29:14Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-17 02:26:10Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-15 07:09:55Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-14 23:56:15Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-14 22:36:30Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-12 12:32:48Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-12 08:44:05Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-12 07:49:14Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-12 06:18:24Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-10 07:48:55Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-10 00:56:40Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-09 18:36:05Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-07 14:53:45Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-07 11:13:26Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-07 06:30:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-07 02:19:16Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-04 10:16:09Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-04 08:17:04Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-04 07:55:08Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-04 07:51:55Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-04 06:16:18Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-04 02:28:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-02 17:02:33Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-03-02 13:17:03Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-03-02 12:39:38Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-28 14:26:28Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-28 10:47:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-28 08:35:34Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-28 08:11:41Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-25 06:03:56Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-24 18:21:44Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-23 09:43:56Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-23 04:46:26Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-22 22:05:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-21 01:59:12Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-20 22:17:34Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-20 20:53:01Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-19 12:19:08Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-19 09:47:17Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-19 08:53:33Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-18 02:07:07Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-02-18 00:36:16Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-02-17 05:31:35Aviation Color Code: ORANGEDOWNLOAD PDF
INDIETROAVANTI