My sister (a paramedic, now retired) and her husband (a deputy sheriff, retiring next year) worked the 1984 Barneveld (Wisconsin) F-5 tornado, which hit right after midnight. People never heard the warning, and a number of people died (probably around 10, with many more injured). They were there (they were from a neighboring county) at first light. The houses, according to them, looked like they had been bombed, with the largest pieces of the wood frame houses about a foot long, if that. The place was just shredded. I don't think they ever got over working that disaster. It was just that horrendous and shocking.
From what I saw of these tornados, these were of the same magnitude. I'm just praying for the victims and survivors.