Interestingly enough, Markowski et al 2002 found, through an examination of VORTEX RFD sampling cases, that nearly all of the tornadoes occurred AFTER the mesocyclone became completely occluded: " "Some basic ideas behind it may include:
Some mesos may be undercut by outflow before they can produce (Doppler radar doesn't scan low enough to see this so the NWS still tornado-warns these storms).
It is possible that there are dual-pol radar signatures unique to warm RFDs. According to a discussion I had with Paul Markowski via email after a teletraining session last year, there are already people working on this.Originally posted by Jeff Snyder
Unfortunately, the operational use of RFD thermodynamics is unlikely