29 May 2012 Piedmont, OK Supercell/Tornado

This lapse shows the life cycle of a northwest Oklahoma supercell that waited to produce a tornado until its last gasp -- soon after it interacted with the gust front from a northward moving, left-split supercell. Full details of the chase are available on my storm chase blog. I've created four animated gifs that can be included in PPT lectures to illustrate supercell features, including: RFD/clear slot, rotation, base, feeder bands, cyclonic/anticyclonic couplet, tornadogenesis, etc.  SPC's Severe Event Archive available here.