In 1928 - A farmer near Greensburg, Kansas, looked up into the heart of a tornado. He described its walls as rotating clouds lit with constant flashes of lightning and a strong gassy odor with a screaming, hissing sound.
In 1964 - A squall line producing large hail swept through central Illinois. A second squall line moved through during the early morning hours of the 21st, and a third one moved through shortly after dawn. The series of hailstorms caused nine million dollars damage.
In 1987 - Thunderstorms prevailed east of the Rockies, producing severe weather in the Central High Plains Region. Thunderstorms spawned four tornadoes in Colorado, and produced wind gusts to 70 mph at Goodland, Kansas.