The first one is fantastic! Thanks for sharing. I love pictures of wacky weather.
The first one illustrates a phenomenon that must be based upon atmospheric conditions in Nebraska; one sees things like this in the Sandhills all the time.
It appears one can just reach up and over, and touch the bottom of those clouds.....but actually those clouds are tens of miles away, and high up in the sky. There are millions of Hiroshimas in that storm as shown, but God and nature decreed that something like 99-44/100ths (some really monstrously high percentage) of the energy packed in it stays high up in the skies. Probably if even just 1% reached the ground, human life on eart--er, the planet--would become extinct, burned out.
That is not a tornado; there were no tornadoes that day.
Some minutes after these photographs were taken, the lights went out; lights were not fully restored in the city until the day before the 4th of July.
No one in Omaha--a major metropolitan area, remember--was hurt or killed, but two teenagers in Council Bluffs, Iowa, right across the Missouri River from Omaha, were killed when a tree landed on top of their motor vehicle, crushing them.
As for the quality of the photographs, the person who took them is a "weather watcher" hobbyist. There had been only a few minutes' warning this was coming.....and it came right at the beginning of the late-afternoon rush hour, everybody headed west into it.
The second and third photographs are the way most who were there, saw it, although as already mentioned, within a few minutes, all those lights (and many windows) went out.