A319 first officer reported a terrain warning while in severe VMC conditions.

Attributes
ACN	1672281
Time
Date	201908
Local Time Of Day	0001-0600
Place
Locale Reference	TUS.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Events
Anomaly	Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

Daytime; VMC; unlimited visibility. Clears for the visual outside of wason. On the descent from wason we got a terrain; terrain; the flying pilot adjusted his descent to extinguish the aural warning and continued to a landing.severe clear; clear for the visual and the terrain in sight.be sure your on the localizer before descending to altitude step down fixes.

Original NASA ASRS Text

Title: A319 First Officer reported a terrain warning while in severe VMC conditions.

Narrative: Daytime; VMC; unlimited visibility. Clears for the visual outside of WASON. On the descent from WASON we got a terrain; terrain; the flying pilot adjusted his descent to extinguish the aural warning and continued to a landing.Severe clear; clear for the visual and the terrain in sight.Be sure your on the localizer before descending to altitude step down fixes.

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.