I think I'd have been freaking out too! I don't mind thunderstorms and quite enjoy watching those, but their violence seems more contained - and anyway we don't really get spectacular ones here, the best I've seen have been on the continent. But it's a shame your friend's husband couldn't find the camera at the time.
Ina, those are amazing - the sky looks like fire or molten metal in the first one. And I'm not sure I've ever seen an evening rainbow before. It even looks to me as if it's a double rainbow. We did see an amazing evening sky driving back from the North last Sunday night, but I didn't think I could capture it from the car - maybe I should have tried anyway.