Tornado facts: How they form and what to look for

While great strides have been made in the study of tornadoes, there’s still so much we don’t know about them. They have been studied immensely during the last few decades to learn what causes them and how they form.

CNN meteorologist Brandon Miller, who is also a storm chaser, has been following and studying these storms since 2005.

“Something you learn from studying tornadoes, especially in the field, is that there is no perfect formula for forming a tornado — every storm is unique,” says Miller.

“Sometimes, it may appear that a storm is in a perfect environment for a tornado to form, yet…