Volcanic Ash Advisories (VAA)

Volcanic Ash Advisories are official, meteorological bulletins designed to alert the aviation industry and air traffic control about the eruption of ash-active Volcanoes and the trajectory of hazardous ash clouds.

Volcanic Ash Advisories (VAA) are issued by one of nine global Volcanic Ash Advisory Centers (VAAC) to prevent aircraft from flying into dangerous ash, which can cause severe engine failure and structural damage.