Aviation Color Codes
 
Main
Current activity of the volcanoes
Volcanic danger prognosis for aviation for next week (in Russian)
KVERT information releases
Catalogue of active volcanoes
Aviation color codes
KVERT: history
Staff
Satellite images of Kamchatka and Northern Kuriles (TERRA MODIS, Rosgeolfond, Sakhalin)

COLOR
The state of the Volcano
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].







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