Citation Excel (C560XL)
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 90; Flight Crew Total 2000; Flight Crew Type 900
Situational Awareness; Communication Breakdown; Fatigue; Time Pressure
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter CFTT / CFIT
Flight Crew Became Reoriented; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Human Factors; Weather
After a long duty day; we were repositioning the aircraft from one uncontrolled airfield to another uncontrolled airfield located 12 miles apart. At the time of departure; the ASOS was reporting marginal VFR conditions. Once we were airborne; the weather appeared to have deteriorated from what was reported. The departure was normal; but after reaching our intended altitude we began configuring for the landing. The aircraft descended and we received a terrain alert at which point we realized we were low. The pilot flying initiated a short climb; before completing the landing checklist. The landing was made without incident.
Citation 560XL Captain reported a GPWS event at the end of a long duty day.