Russian  
KVERT: Aviation Color Codes

Main
Aviation color codes
Volcanic danger prognosis for aviation (in Russian)
Current activity of the volcanoes
KVERT/Volcano Observatory Notification to Aviation (VONA)

Aviation Colour Codes recommended by the International Civil Aviation Organization (ICAO)
GREEN
Volcano is in normal, non-eruptive state.

   or, after a change from a higher level: 

Volcanic activity considered to have ceased, and volcano reverted to its normal, non-eruptive state.
YELLOW
 Volcano is experiencing signs of elevated unrest above known background levels. 

   or, after a change from higher level: 

Volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened unrest with increased likelihood of eruption.

   or,

Volcanic eruption is underway with no or minor ash emission.
[specify ash-plume height if possible]
RED
Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely.

  or,

Eruption is underway with significant emission of ash into the atmosphere.
[specify ash-plume height if possible]








 
Recommended browsers for viewing this site: Google Chrome, Mozilla Firefox, Opera. Using another browser may cause incorrect browsing of webpages.

Copyright © Institute of Volcanology and Seismology FEB RAS, KVERT, 2004-2014. Terms of use
URL: http://www.kscnet.ru/ivs/kvert/
No part of the website and/or website content can be reproduced in any form whether electronically or otherwise without the prior consent of the right holder. You should provide a link to the website www.kscnet.ru/ivs/kvert/ from your own website.
© Design roman@kscnet.ru