We were set up south, near Keokuk, eating dinner and watching a cumulous field when we saw that warning. We got to the storm around 7, right as its RFD surged and gusted out. It was a very ominous HP supercell. We were able to follow it along for over an hour. It was the first time I saw a storm being that dynamic. It had a beautiful turquois hail core. I will post some pictures as soon as I get them processed.