Hi Roger,

Thanks for your answers. I think you've missed the gist of my questions, which means, obviously, that I'm not communicating clearly. That would be like you not knowing how many six-packs it would take to equal X # of bottles of beer on the wall, over on LIAHO. I'm the writer, so let me take a third pass at this.

Of course we won't know if this is a foreshock or a main event until either a major earthquake happens, or enough time goes by without anything larger happening, in which case we'll all agree that it was a main event.

My questions are really very simple: IF the 4.2 Oakland eq were indeed a foreshock, would it tend to have any aftershocks? Can a foreshock have its own aftershock sequence? Or do all foreshocks lack their own aftershocks sequences?

I think I remember from LP, that the two foreshocks (only recognized as such after the 7.1) did have small aftershocks, but I wasn't into watching earthquake patterns at all in 1989, so I can't say for sure.

I hope I've made my questions clear this time.

Thanks,

Cathryn