1997 Ford F 150 Ve Noise That Sounds Belt Screech Which Only Occurs Under

I've a noise, that sounds like a belt screech, which ONLY occurs under the following specific conditions, and is repeatable approximately one time in three. I managed to record the sound twice. If you're smart enough to solve it, my hat goes off to you. Other than the sound, the vehicle doesn't exhibit any noticeable performance problems.

It ONLY occurs when:
-Ambient temperature between 32F (0C) and 50F (10C)
-Accelerating from a stop and transitioning from 2nd to 3rd gear (it's an automatic transmission)