Light approaches at high rate of speed and makes a ninety degree turn.

I’m not at all sure of the date because I’m relaying this account some 20 years after the fact.  
My husband and I were returning home one evening, the moon was full but it was only a blurred light behind a low(?), thin cloud cover.   
We were walking to the front door when I saw a small, round, whitish light in the sky approaching from the west at a high rate of speed.  It was impossible to tell the relative size of the object or its altitude.  
At first I thought there must have been a test from Lom Poc as they did launch many test missiles from this location throughout the time I lived in the west valley and they often caused some very strange displays in the sky.  But as this "light" approached our position leaving no contrails, it suddenly made a 90 degree turn, shot straight up through the clouds and rapidly ascended out of view.   The cloud cover parted in its wake in a perfect circle which continued to expand like a smoke ring.  
I wasn’t quite sure if I had actually seen what I saw.  My mouth dropped open and I turned to my husband as we both spoke at the exact same instant:  "Did you see that?"   Neither of us could explain what we had just witnessed.
I’ve told this story to a few people over the years when the subject of UFO’s would come up in casual conversation and to this day it gives me chills yet I can tell my listeners want to dismiss my story as just that; a story.  The overactive imaginings of youth.  I have never claimed the object was extraterrestrial; however I always do remind them that UFO only means the object was unidentified and flying.  
I am still a practicing skeptic, but I just don’t have any rational explanation for what we saw that evening and as of yet no one else has either.
Witness indicates that the date of the incident is approximate.  PD