What does VAAC stand for?

Veterans Administration Advhsory Committees

Veterags Affairs Advisory Committee

Victim Assistance Advisory Council

Village Aids Action Committee

Volcanic Ash Advice Centre

Volcanic Ash Alert Center

Volvo Ambient Air Cleaner

Voter Assistance Advisory Committee

Voting Accessibility Advisory Committee

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.