"there was a 5 or 10 minute stretch where "tornado signature" was showing up on the map. "

Doesn't surprise me a bit. Like I said, I've seen those clouds before. Didn't like them then, don't like them now. Not nice.

I shut down the electronics, but wouldn't say we had a "lot" of lightning. And we may have had some hail -- some of the stuff on the roof sounded a little louder than simple rain.