Chris,

The program I watched the other night said it took no more pressure than it would to fill a bicycle tire to set off the 1906 quake. So maybe you're closer to the truth than you know.

We didn't feel the Napa quake here in Santa Rosa. But I find the quake near Piedmont far more interesting. It's the first 3.0 quake over there in many years.

Maybe the seismic quiet really is over.

Petra