Hi Lowell, Don and All,

I just wanted to say that the average of a 3.0 occurring in the SF Bay area every 18 days is a fools fallacy. Of course, now that may change in the months ahead, but we have had a long standing quiet spell and it looks like the quiescence is over.

My best guess is that anything is up for grabs. The area of Pacifica that had its quake today has been in a seismic gap and has been expected to rupture for a good long while so this may spell the beginning of that expectation.

We also must look again at Bolinas as that may well be a foreshock to an even larger event. It is most fascinating in that its last 5.0 produced no aftershocks at all.

Next we have this new inter-bay activity. It has happened before without producing any further larger quakes that are even noteable, but still it brings on thoughts of what has been of late in the Northbay in general. Bolinas 5.0, the Bennett Valley area behind the RCF at a 4.2 and Yountville's 5.2. There must be some pressure building up somewhere and these quakes are just a mild sign of what's on the menu in my estimation.

Don and I do not agree that the inter-bay quakes are on the Pinole Fault. I say they are the bottom of the RCF and he says Pinole. Well, we cannot agree on everything, so we will just have to let time tell its tale and in the end we will all know what it means.

Just a few notes.....Petra