Narrative:

On approach to ZZZ; aircraft was receiving vectors to final for the ILS xy. We were told to maintain 5100 ft which we were adhering to as well. The aircraft was approximately 3-5 miles from the NDB at a heading of approximately 080 and an altitude of 5100. We were given the final vector to intercept and cleared for the approach (heading 020 maintain 5100 ft until established clear for ILS xy) when we simultaneously received the aural 'terrain; terrain'. Captain added thrust; called for go around. Crew accomplished the go around. During climb out informed ATC we were going around. ATC confirmed the altitude that we were at when we received the warning and gave us vectors back out for the ILS xy at a higher intercept altitude. The weather was IMC when we received the terrain warning. We had briefed the terrain; and obstacles in the area as well as the escape maneuver prior to our initial descent into ZZZ. Both mfds had terrain sweeping active and were showing little to no terrain in our area (few spots of green). On the ground we debriefed what occurred and determined that initiating the go around after 'terrain' in IMC conditions was the correct course of action because we could not confirm if it was an erroneous warning. Cause: possible erroneous warning or inappropriate vectoring altitude. Suggestions: make sure verify aircraft position and all altitudes with company charts provided and ATC as well as brief procedures for terrain and go around when operating in airports with mountainous terrain and high volume of go arounds especially when IMC exists.

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Original NASA ASRS Text

Title: CRJ-200 First Officer reported a Terrain Warning while on vectors to final.

Narrative: On approach to ZZZ; aircraft was receiving vectors to final for the ILS XY. We were told to maintain 5100 ft which we were adhering to as well. The aircraft was approximately 3-5 miles from the NDB at a heading of approximately 080 and an altitude of 5100. We were given the final vector to intercept and cleared for the approach (HDG 020 maintain 5100 ft until established clear for ILS XY) when we simultaneously received the aural 'Terrain; Terrain'. Captain added thrust; called for go around. Crew accomplished the go around. During climb out informed ATC we were going around. ATC confirmed the altitude that we were at when we received the warning and gave us vectors back out for the ILS XY at a higher intercept altitude. The weather was IMC when we received the terrain warning. We had briefed the terrain; and obstacles in the area as well as the escape maneuver prior to our initial descent into ZZZ. Both MFDs had terrain sweeping active and were showing little to no terrain in our area (few spots of green). On the ground we debriefed what occurred and determined that initiating the go around after 'terrain' in IMC conditions was the correct course of action because we could not confirm if it was an erroneous warning. Cause: possible erroneous warning or inappropriate vectoring altitude. Suggestions: make sure verify aircraft position and all altitudes with company charts provided and ATC as well as brief procedures for terrain and go around when operating in airports with mountainous terrain and high volume of go arounds especially when IMC exists.

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.