How do tornadoes form?

A simplified, conceptual demonstration of one possible way that tornadoes form. This is the process known as bottom-up tornadogenesis. A visual example is provided for both non-supercell and supercell tornadoes. For reference and ease of access, this is a short clip from my "Front Line Storm Spotting" presentation. Watch the full presentation here: https://www.youtube.com/watch?v=rVIQtKuDr2c
Much of the photos and video courtesy Andrew Pritchard and used with permission.

Видео How do tornadoes form? канала Skip Talbot's Storm Chasing Chronicles