Loop of the Nexrad KVNX radar from 7/21/96 20:27 UTC to 7/21/96 21:19 UTC. The boundaries within this loop are not as easy to make out, but the secondary boundary is located on top of Alva, OK and extends northwestward into Kansas between Comanche and Barber, KS. The surface front can be seen to the northeast, northeast of Sumner, moving southwestward.