The HKO operates an Airport Meteorological Office (AMO) at the Hong Kong International Airport (HKIA). The AMO is located at the Air Traffic Control Tower and serves as an aeronautical weather station for Hong Kong and an aerodrome weather office for HKIA. The AMO is responsible for issuing warnings on hazardous weather which may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Aviation weather observers and forecasters work round the clock at the AMO to make weather observations, and issue weather forecasts and warnings for the airport.