Massive, Cylindrical Shape over UC Davis

I saw a massive, cylindrical shape in the sky, about the year 1992, or maybe 1994 (?), can’t remember the year, but it was hovering over Hwy 80 where UC Davis University is.  It was pouring rain, a lot of clouds, but this thing was so huge, you couldn’t miss it.  Lights in the clouds all around it, or maybe when the lightning struck, you could see the shape of it in the clouds, like a black, horizontal Pringles can in the clouds.  
I was driving and it was too dangerous to stop, but I got a few looks at it as I drove.  I never reported it, or thought anyone would believe me, since most sightings are disk shaped, but I saw the trailer for Unacknowledged the other day, and I saw a picture of what I saw!  I am reporting it in case someone else has reported the same sighting over Davis, CA.
Witness indicates that the date of the sighting is approximate.  PD