B737-700 flight crew reported that they got an 'obstacle; pull up' alert when they turned base early...

Attributes
ACN	1489275
Time
Date	201710
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200 Flight Crew Type 11000
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200 Flight Crew Type 4000
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT

Narrative:

From the arrival; we requested and were cleared the visual 19R with a right base a beam [a tower]. The first officer (first officer) turned to a dogleg a little earlier than usual which brought us closer to the [tower] than normal. We received an 'obstacle; pull up' alert; which he immediately complied with by rolling wings level; pulling the nose up and adding power. The alert stopped quickly after that and we saw that we were still in a position to safely resume the approach. We landed with no further incident.on the right base to visual 19R; we should square the turn to final to maintain separation from the tower. As the pilot monitoring; I should have noticed the situation developing and directed a correction. I don't see a need to change the procedure; we could have prevented the situation by complying fully with the existing procedure.

Original NASA ASRS Text

Title: B737-700 flight crew reported that they got an 'OBSTACLE; PULL UP' alert when they turned base early.

Narrative: From the Arrival; we requested and were cleared the visual 19R with a right base a beam [a Tower]. The First Officer (FO) turned to a dogleg a little earlier than usual which brought us closer to the [Tower] than normal. We received an 'OBSTACLE; PULL UP' alert; which he immediately complied with by rolling wings level; pulling the nose up and adding power. The alert stopped quickly after that and we saw that we were still in a position to safely resume the approach. We landed with no further incident.On the right base to visual 19R; we should square the turn to final to maintain separation from the Tower. As the Pilot Monitoring; I should have noticed the situation developing and directed a correction. I don't see a need to change the procedure; we could have prevented the situation by complying fully with the existing procedure.

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.