That's not really how it works. Tornadoes can form anywhere that enough warm humid air hits enough cold dry air. And that happens a lot in the Midwest/Plains re

That's not really how it works. Tornadoes can form anywhere that enough warm humid air hits enough cold dry air. And that happens a lot in the Midwest/Plains region during certain times of year. Tornadoes would form there even if there were forests. The trees might stop the classic funnel cloud from touching down completely, but it won't stop the storm.