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
ETNA2021-09-07 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
ETNA2021-07-14 16:29:51Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2021-07-14 11:43:54Aviation Color Code: REDDOWNLOAD PDF
ETNA2021-07-14 11:09:42Aviation Color Code: REDDOWNLOAD PDF
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
 AVANTI