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
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
ETNA2020-09-15 15:42:19Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-09-08 15:43:18Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-29 14:58:13Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-29 12:18:28Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-26 06:59:49Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-25 17:21:35Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-22 08:19:13Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-22 06:39:13Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-21 04:34:00Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-20 15:34:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-18 13:33:40Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-15 17:48:16Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-15 15:14:11Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-14 16:20:21Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-14 10:09:06Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-08-11 17:04:32Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-08-04 17:00:13Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-07-28 15:47:12Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-07-22 19:16:02Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-07-14 16:04:06Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-07-07 16:52:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-06-30 15:28:08Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-06-23 10:11:24Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-06-16 11:35:46Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-06-10 05:48:19Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-06-03 15:41:27Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-26 17:48:20Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-22 13:16:20Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-22 07:12:00Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-05-22 06:05:17Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-22 04:48:00Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-05-22 03:21:03Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-05-19 16:21:26Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-12 15:23:20Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-09 08:23:19Aviation Color Code: ORANGEDOWNLOAD PDF
ETNA2020-05-08 14:55:39Aviation Color Code: REDDOWNLOAD PDF
ETNA2020-05-05 15:30:25Aviation Color Code: ORANGEDOWNLOAD PDF
INDIETROAVANTI