May 23rd took me near Plainview, Texas and points southeast. A strong supercell developed near a boundary and produced a couple of landspouts. It was rotating quite strongly and between the inflow and RFD, became almost invisible at times due to blowing red dirt. The storm had pretty decent structure as it also produced tons of hail to baseball size. At one point early, a funnel extended halfway to the ground for a couple minutes as it rotated around the mesocyclone.