defines the beginning of storm chasing for TornadoVideos.net. We knew very little about storm structure or forecasting back then, but we learned fast on May 3, 1999. This video is a great example of how NOT to safely storm chase. Seeking shelter under an overpass is a HUGE mistake, since the winds actually accelerate there when a tornado approaches. Check out TornadoVideos.net for more insane tornado videos, our breaking news blog, and our live GPS tracker. ... tornado F-5 May 1999 storm ...