On May 25 of 1955, I was a sophomore in HS in Wichita, Kansas, playing clarinet in the band for the Wichita North HS graduation. When the festivities were over about 10:30PM or so, we left the downtown auditorium to the worst rainstorm I can ever remember. Somehow, we all struggled home and went to bed.
   The next morning the news was full of the story of the worst tornado ever to hit Kansas, which destroyed the town of Udall, about 25-30 miles to the southeast of us.

The warning systems were pretty primitive then, relying on teletype and sirens...etc.
I learned to take ANY tornado warning pretty seriously after that.