Regional jet flight crew reported they got an egpws 'terrain' warning on a night visual approach to ...

Narrative:

Unclear as to the cause of the warning; we believe we were clear of the terrain according to the lights we could see. The event took place at roanoke airport at night on a visual approach to 24. The approach controller turned us towards roanoke airport at 4;000 feet. The runway was in sight [and] we were cleared for a visual approach into 24. Upon descending out of 4;000 feet we received a 'terrain pull up' aural warning. We executed the egpws procedure adding full power and pitching up. The controller levelled us off at 5;000 feet and vectored us around for another approach. We were given a descent to 4;000 feet; once level we were given vectors back to the airport. When we approached the same mountain range as before the 'terrain' aural warning sounded again. This time without the 'pull up'. As we were climbing to 5;000 feet; another aircraft was descending to 5;000 feet and given vectors away from us. They were never close enough for an 'resolution advisory' or 'traffic advisory'. We were then vectored for an ILS 34 and landed.

Original NASA ASRS Text

Title: Regional jet flight crew reported they got an EGPWS 'terrain' warning on a night visual approach to ROA. Crew stated they felt they were clear of terrain.

Narrative: Unclear as to the cause of the warning; we believe we were clear of the terrain according to the lights we could see. The event took place at Roanoke airport at night on a visual approach to 24. The Approach Controller turned us towards Roanoke airport at 4;000 feet. The runway was in sight [and] we were cleared for a visual approach into 24. Upon descending out of 4;000 feet we received a 'terrain pull up' aural warning. We executed the EGPWS procedure adding full power and pitching up. The controller levelled us off at 5;000 feet and vectored us around for another approach. We were given a descent to 4;000 feet; once level we were given vectors back to the airport. When we approached the same mountain range as before the 'terrain' aural warning sounded again. This time without the 'pull up'. As we were climbing to 5;000 feet; another aircraft was descending to 5;000 feet and given vectors away from us. They were never close enough for an 'Resolution Advisory' or 'Traffic Advisory'. We were then vectored for an ILS 34 and landed.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1260381
Time
Date	201504
Place
Locale Reference	ROA.Airport
State Reference	VA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter CFTT / CFIT

Regional jet flight crew reported they got an egpws 'terrain' warning on a night visual approach to roa. Crew stated they felt they were clear of terrain.