Here is an example of ENTLN Lightning Plot compared to -20C reflectivity from MRMS:

There appears to be nice correlation between lightning and reflectivity aloft (which makes physical sense). In this example, the highest concentration of lightning is associated with >40 dBZ at -20C. A ramp up in lightning could be indicative of larger reflectivity aloft, which would suggest an intensifying updraft.

Polarimetric Researcher