This tornado outbreak is very interesting to me because during that time I was like 9 years old and did not have a lot of interest in tornadoes. Even though I remember it and one of those tornadoes rated F4 on the fujita scale stayed on the ground for 130 miles and 2 and a half hours. I know dewpoints were not extremely high(56-62F) and upper 60s to middle 70s. I would like to know from a meteorlogical perspective of what ingredients sparked this historical tornado outbreak. Also how many of you chased this event during that time.