May 6th was the most active day so far in 2015. And it was only the beginning of several days of severe weather in the great plains.
While not a particularly notabable tornado (although it is a large code), this video very clearly shows the structure of a classic supercell. On the right is the flanking line with the main updraft (mesocyclone) and tornado in the center. The left side of the storm shows the hail core and forward flank downdraft (FFD).
Here is the 0.5 deg reflectivity and storm-relative velocity images in GRLevel2:
This GRLevel2 volumetric image (reflectivity at 40db) clearly shows the tornado:
