Not lightning, doesn't look anything like that & never in the right weather for lightning (or even heat lightning) either. Sprites? No idea what that would look like!

I do get migraine like tension headaches sometimes, but the large flashes are never when I have one. I am always talking to my fiance in spirit, who was killed by a drunk driver 6 months ago.

They are always high up in the sky (not near me), these large flashes. It's quite odd, but pretty cool, whatever it is . . .