Question regarding lightning frequency and type in thunderstorms.?
A couple of weeks ago, there was a cluster of severe thunderstorms which produced quite a bit of hail here in the Chicago area. I even managed to recover a 1" diameter hailstone on my property. Odd thing was... there was virtually no cloud-to-ground lightning activity at all. There was quite a bit of intracloud lightning however, just no CG strikes. Other times, there are non-severe thunderstorms with CG strikes left-and-right hitting trees and blowing transformers up. And then there are times when there are storms with torrential rainfall and there is very little CG and intracloud lightning.
What determines lightning frequency in thunderstorms as well as the ratio between IC/CG lightning?