It used to be there but I could not find it either.
Since they have not added to it in quite a few years, I suspect they took it off cause its pretty limited.
Lightning yes, echo tops no.
It is nothing like what you would get with a 496 like device.
nexrad, winds, lightening, metars n tafs, is about all I can recall with mine.
This functionality was there years ago in the early releases of the HS1.
No updates to this functionality that I can recall.