>> reporter: but the celebration ends as we drive through northfield. our cameras capture this tornado. which damages several homes and overturns a semi. >> terrified people ran for cover. >> it came and went in an insta instant. >> reporter: one of our gimds has family nearby. >> my dad lives two miles down that road that we just passed. >> oh, my goodness. thank goodness it missed his house. some people think, well, we're just, you know, almost like ambulance chasers. we go and take joy in somebody else's misfortune, and that's not true. >> little different when it gets personal. >> oh, fur sure. >> reporter: hill says all eight of his tours this year have yielded or ttornadoes. more than 80 twisters in all. >> wow! this is far from done. >> reporter: including this one in colorado that even had hill striking a pose. but in the past, not every trip has encountered this holy grail of storm chasing. >> you can never guarantee that a tour will see a tornado. you are almost always going to find severe storms. >> reporter: we spent hours every day just dri