Dan Robinson
EF5
I can't say I've ever seen this before, but it probably happens more often than we think. Tornado debris lofted from one of the Pampa area tornadoes yesterday became nuclei for hailstones:
https://www.facebook.com/photo.php?fbid=10205888396463159&set=o.121467212293&type=3
https://www.facebook.com/photo.php?fbid=10205888396463159&set=o.121467212293&type=3