http://www.sord.nv.doe.gov/Lightning/Lightning-sord.htm
Well, semi on-topic. They had some lighting hits near Nellis today
according to the Sun newspaper. I took this snapshot:
http://www.lazygranch.com/temp/zap.gif

One of the lightning sensors can be seen from the free territory near
the backgate.
http://www.lazygranch.com/bg.htm