VAAC Aviation Abbreviation

Volcanic Ash Jdvisory Center

Volcanic Ash Advisory Centres

Volcanic Ash Advisory Centre

A meteorological centre designated by regional air navigation agreement to provide advisory information to meteorological watch offices, area control centres, flight information centres, world area forecast centres, relevant regional area forecast centres and international OPMET data banks regarding the lateral and vertical extent and forecast movement of volcanic ash in the atmosphere following volcanic eruptions.