Bill: Jo. Things go wrong. You can't explain it, you can't predict it. Killing yourself won't bring your dad back. I'm sorry that he died, but that was a long time ago. You gotta move on. Stop living in the past, and look what you got right in front of you.
Jo: What are you saying?
Bill: Me, Jo.
During the big falling debris scene, Paxton and Helen Hunt are in the red truck. The truck hits a tractor. The impact damages the windshield, and it is clearly broken, but a second later the windshield is perfect and untouched.
According to the Special Effects documentary, the sound of the tornado was produced by recording a camel's moan and digitally slowing it down.