Our overnight postion of York (NE) Was close enough for some Low End Severe Storms to fire in Western Nebraska. Ambled along I-80 And had lunch in Kearney. A nice Storm went up to our South West near McCook so we went down to have a look at it over a nice Reservior. This Storm took me by Surprise as I was not even expecting a Wall Cloud let alone Rotation. Ended up with a lot more than a Slight Thunderstorm with a nice HP Supercell with Golfball Sized Hail. Let this chase us as it was moving SE And ended the day in McCook.