Sounds like an orb-weaving spider from the Argiope family. Possibly A.
aurantia. But there are a couple more species of Argiope that it could be, so I
can't tell you for sure. If you could take a pic of it I might be able to id
Go here: http://www.sdnhm.org/fieldguide/inverts/argi-aur.html to see a picture
of A. aurantia, then tell me if that's what it was.
11. Spider ID?
12. please id spider
13. Spider ID
14. Spider I.D.