Crj-200 first officer reported receiving a terrain alert on initial approach.

Attributes
ACN	1528184
Time
Date	201803
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Inflight Event / Encounter CFTT / CFIT

Narrative:

While being vectored for the approach; coming from the west to the airport. ATC had us descend to 4;400 MSL. The aircraft was about 30 miles from the airport. We were in visual conditions with a 1/4 moon. At 4;400 MSL GPWS call out terrain; followed by terrain pull up. As a crew we executed the max thrust pull up procedure and climbed 1;000 feet to 5;500 MSL. We notified ATC of what occurred. ATC seem surprised to this event. We check the altimeters and all were set correctly to the current ATIS. Mountainous terrain. Dark night. Poor ATC vector.

Original NASA ASRS Text

Title: CRJ-200 First Officer reported receiving a terrain alert on initial approach.

Narrative: While being vectored for the approach; coming from the west to the airport. ATC had us descend to 4;400 MSL. The aircraft was about 30 miles from the airport. We were in visual conditions with a 1/4 moon. At 4;400 MSL GPWS call out terrain; followed by Terrain Pull Up. As a crew we executed the Max thrust pull up procedure and climbed 1;000 feet to 5;500 MSL. We notified ATC of what occurred. ATC seem surprised to this event. We check the altimeters and all were set correctly to the current ATIS. Mountainous terrain. Dark night. Poor ATC vector.

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.