Salve Makis,

"I use the degree/decimal of Richter scale and precise that the magnitude in my prediction is such as it had registered down my own feets, for that one a 3.5 becomes a 4.0 to about 500km distant me."

It is that I precised in a previous post.
Thus, regarding a place distant about 1500km as Naples, the 3.8 means 5.0/5.5 at least.

However, this is a question I'll resolve with next predictions, when I'll indicate only those of which I'll have a large percentage of chance.

Riguardi, Antonio.