This is called a cloud shelf when extreme heat and cold clash right above you causing very high winds massive rain hail and about an 80% chance of tornado
Meh this is normal for the midwest. I remember looking forward to days like that they are exciting. I really miss it, being out here in Cali with a 7 year drought and almost no rain in all that time really makes it worse. I feel bad for that guy that died from lighting, but people should know better than to be out in the open during a T-Storm no matter how small or big. I have seen maybe oh 10 tornados ranging from F1-F4 in my lifetime and like 20 water spouts I love it, it is exciting. I actually find the hail that precedes scarier than the tornadoes.
The cali life tho Ive seen something similar to that. Although I live in a more calm part of cali, id like to see it rain soon -.-
Colorado weather isn't usually this extreme but it's super bi-polar. There have literally been days where schools and work have been closed in the morning due to snow and then by noon half of the blizzard's been melted away. We like to say that the worst possible profession is to be a weather person here.