 Then again, it's the nature of summer blockbusters not to fret over much about reality. To jack up the suspense, Twisters gives us an imaginary Oklahoma whose citizens are so dim that, even though they live smack dab in Tornado Alley, are bombarded by newscasts warning of biblically large tornadoes, see nearby towns get pulverized, and find themselves buffeted by winds as they stand in the street, they still need Tyler and Kate to tell them to take shelter.