Thanks, KWT.
Here are a couple more pictures from the chase up in the Woodward County area from Memorial Day 2008.
A better example of the striations & mid-level inflow features present when the storm was early in its existence.

Passing to our NW; starting to diminish.

As the storm dissipated (from the ground up, as opposed to collapsing), all that remained was a veritable funnel cloud as the remnants of the rotating updraft constricted. Can't say I've ever witnessed that before.
