I watched this last night:
I was struck not by the craziness of the storm chasers but by their flow of observations and careful watching of the storm. It was pretty well developed by the time this video starts and I was impressed by the massive size and violent action in the tornado area. I think people get tied up looking for those funnel clouds but you don’t need to see that to know that there may be, even in a circular-movement storm, a lot of force at the center.
That was last night. Just now, I watched this, this shows the very rapid transition from big developing mass to a long skinny funnel touching the ground to just this wall of destruction. The reports from the cars are increasingly frantic as they realize that cars are part of the debris seen at the edge of the storm. Meanwhile the on-air people are reporting the tornado emergency and strongly encouraging people to get underground right away.
It’s worth watching if only to understand just how fast dangerous storms can develop.