Interesting post.
Hadnīt really heard of this before until last night on approach about 4000īabove terrain in a very mountainous area that Iīd never been to before. 767.
In the middle of the biggest cell Iīd ever seen, couldnīt get off track due terrain so had to ride it out. Hail so loud that couldnīt hear a thing in the flight deck.
Just as we were approaching the hold we got a "whoop, whoop, Pull up", Rad alt was indicating 800īlast time I registered it.
We had been struck by lightening just prior to this which may have been a factor, but the rad alt was indicating strangely before this anyway. I guess it was the density of the hail that caused it in our case.
Never want to be in that position again to find out though!
