Script to Screen: Twisters. Season 15 Episode 6 | 26m 47s Video has Closed Captions | CC. Screenwriter Mark L. Smith joins us to talk about writing the blockbuster thriller Twisters.

Thursday night's severe storms left roofs ripped off, trees toppled on homes, a barn collapse, and 200,000+ without power. ... which is among the weakest twisters on the Fujita strength scale.