Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Distraction
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Flight Crew Returned To Clearance
Environment - Non Weather Related; Human Factors
We were cleared for the visual 20 about 10 miles out. I entered downwind at 3000 ft at flaps 20 at 180 knots. We had a crosswind at 52 knots pushing us out a little bit. I turned base around four miles out. I thought I was a little far out so I delayed adding more drag gear or flaps. But I did set in 2000 Ft in the altitude alerted. As I descended down I just forgot the field elevation was over 1300 ft. I noticed we were getting low passing 1100 ft so I stopped the descent which was at 940 ft. I immediately climbed back to 1200 ft and configured the aircraft for landing gear down flaps 30. Then flaps 45. We were still 4-5miles out turning final and established for landing at 1000 ft so there was no need for a go around. The aircraft was only below a 1000 ft for no more then 20-30 seconds; if that. I noticed the altitude getting low and corrected immediately. I was not thinking of field elevation when I set 2000 Ft in the altitude alerted. First Officer was the pilot monitoring and was looking for the obstacle that was out about 5 miles ahead of us.
[Report narrative contained no additional information.]
Flight crew flying visual approach into RST went below 1000 feet AGL about 5 miles out. They corrected back to profile and completed a normal landing.