|
VOLCANO OBSERVATORY NOTICE TO AVIATION (VONA) WMRA01 RUVX 312334 VONA DTG: 20261031/2334Z VOLCANO: SHEVELUCH 300270 PSN: N5638 E16119 AREA: RUSSIAN FEDERATION SOURCE ELEV: 2500M AMSL NOTICE NR: 2026/37 CURRENT COLOUR CODE: ORANGE PREVIOUS COLOUR CODE: ORANGE SVO: KVERT ACT STS: ERUPTION OCCURRED ONSET: 20261031/2250Z DUR: 10 MIN VA CLD HGT: 6900M AMSL HGT SOURCE: HIMAWARI-9 14M15 MOV: NE CTC: ANASTASIYA S. MALYSHEVA, IVS FEB RAS, TEL: +79622825253, MAL-AN@KSCNET.RU, KVERT.FEBRAS.NET RMK: EXPLOSION SENT ASH UP TO 6.9KM ASL, ASH CLOUD MOVED 41KM TO NE OF THE VOLCANO ON 22:50 UTC NXT NOTICE: A NEW VONA WILL BE ISSUED IF COND CHANGE SIGNIFICANTLY OR IF THE COLOUR CODE CHANGES. |
CITATION GUIDELINES For formal scientific citation of this KVERT/VONA, please use the following: KVERT Volcano Observatory Notice for Aviation (VONA). октября 31, 2026. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?vn=180. |
| Aviation Colour Codes |
|
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] |
|
UNASSIGNED There is insufficient information available to assess the current status of the volcano or volcanic activity. |
