Do we know how ball lightning is created?

Question: Do we know how ball lightning is created?
- Keywords:
  ball lightning
Asked by 980artc36 to Andrew, Lizzie, Nick, Sonia on 22 Jun 2015.
- Elizabeth Kapasa answered on 22 Jun 2015:
  
  Wow! I’ve never heard of it until now. Thanks for telling me about it! This website is great for finding out about things:
  http://science.howstuffworks.com/nature/climate-weather/atmospheric/ball-lightning.htm
  This was a good article too!
  http://www.newscientist.com/article/dn24886-natural-ball-lightning-probed-for-the-first-time.html#.VYgeI2C9-SI
- Andrew Phillips answered on 24 Jun 2015:
  
  I didn’t even know about it till I read the question. At least I know what it is now: https://en.wikipedia.org/wiki/Ball_lightning
  
  My instinct is to say that it’s probably related to different charges within a storm, but it seems there are quite a lot of hypotheses out there!

Question: Do we know how ball lightning is created?