Hi Petra. I thought I would share this information with others that I found for you. Hope you don’t mind.

One day your dream or maybe I should say our dream will come true as I have come to believe.

“In some regions the distributions are similar to the Calaveras fault and to the Loma Prieta area, for example in the Livermore, Coalinga and San Francisco Peninsula regions and on the San Gregorio fault. The seismicity in the first three regions is related to faults that move in large earthquakes; to the Greenville fault that ruptured in the 1980 M6.0 Livermore earthquake, to the Coalinga fault that ruptured in the 1983 M6.3 Coalinga earthquake and to the San Andreas fault that ruptured in the 1906 San Francisco earthquake. No historical earthquakes can be attributed to the San Gregorio fault [WGCEP, 1990], and this might be attributed to fault creep. The moment-fault length distribution however indicates that this fault is non-creeping and therefore is potentially subject to future large earthquakes. Similar moment-fault length distributions are observed on the Rodgers Creek fault and in the region between the Rodgers Creek and the Green Valley faults that includes the West Napa fault. No creep has been detected on these faults [Galehouse, 1992] and the moment-fault length distributions indicate that they will be ruptured in large earthquakes”.

Now here is the kick in the head. Because his office is in the danger zone, Roland Bürgmann of the University of California, Berkeley, decided to find out. Bürgmann's team searched for the warping on radar maps of the ground along the fault made by the InSAR satellite from 1992 to 1997. This kind of deformation would indicate that no deep creep was relieving the strain. They also analyzed microquakes that had ruptured 10 kilometers beneath the surface. In the 18 August issue of Science, the team concludes that the fault is creeping at 5 to 7 millimeters per year--not just at the surface, but also down to a depth of at least 10 kilometers. This should defuse the strain that energizes major earthquakes. The new results dramatically reduce estimates of the probability of an earthquake along the northern Hayward and imply that the 1868 quake actually started in a nearby fault, like the southern Hayward or Rodgers Creek. If this is true then the part of Rodgers Creek fault involved in this would be the portion in your area and southward.

I also found some other information that I think you will be interested in. On the San Gregorio Fault near Moss Beach, a buried stream channel has been offset about 1,000 feet over the past 80,000 years. This indicates that the strain rate there is about one-sixth of an inch per year, a small fraction of the total regional plate motions. Offshore studies reveal other active strands of the San Gregorio Fault that account for additional strain. This also indicates that this fault is not a mover and as such could produce a large earthquake. One sufficient enough to cause a tsunami.

An added footnote. She’s right about never being quiet. You should hear her when she takes me to task. Take Care…Don in creepy town.