I was one of the chasers who was in that wind/hail/pebble fest. While not surprised at the speed of the wind (the storms were moving east quite fast +45 mph and had rotation and strong very cold inflow and outflow), it was the amount and type of debris that caught us off guard. Lots of small rocks, pebbles, and small hail shattered all of the chasers west facing windows. I have hail guards on my windows with 1” grids, but the small size coupled with the speed and direction the stones were traveling (pretty much horizontally), most windows didn’t have a chance. If you watch Chris Collura’s Facebook video, you can see the event. There was an initial strong wind/sand only event that lasted about 10-15 seconds, followed by about a minute of calm. Then came the strong straight line winds/pebbles/hail for almost 10 minutes which did most of the damage. Tornado sirens went off and the power went out around the gas station we were at. I have since replaced those broken windows on my vehicle with lexan. Crazy storm.