April 19 of this past storm season was my first chase of the year and it turned into quite an event after dark! Multiple tornadoes formed in a small area with movements that seemingly covered every possible direction through the night.

This is because two tornado-producing supercell thunderstorms underwent a Fujiwara transition, which meant they rotated around each other before merging into a single cell. The result was a simply erratic but unique distribution of tornadoes.

Let’s break down what made this night unique in this lecture-style video from Titan Raychel Sanner.