sarah minson of the usgs, thanks for your time. just to be clear, you're not re it's perhaps an unmapped fault from your perspective. >> that's what it appears to be at this time. the data is still coming in. >> okay. sarah, thank you. we'll get back to you. we appreciate your time. if you're just tuning in, perhaps you felt it in the small area of walden, just north of walnut creek, 10:33 p.m., the earthquake and then aftershocks. let's bring in our chief meteorologist jeff ranieri. we've been talking so specifically on the 30th anniversary of the loma quake. you're doing in-depth reporting on earthquakes. what are you seeing from that area? >> well, just as we heard from the usgs expert, likely close to the green valley fault and the running through that area that could have relieved a little bit of that pressure tonight. i know down here in san jose we definitely felt it in our studio. maybe eight to ten seconds of rocking back and forth, which i know a lot of you back home have felt. a 4.5 four miles below the earth's surface.

on the phone with us another person from usgs, sarah minson is coming on. are you there?ate it. talking to amy vaughn, glad to have you as well. anything you've learned last few minutes. 4.5, will it change? >> numbers can change as more data and analysis comes in but current numbers are 4.5, depth of about nine miles. >> we have 2.5 at eight miles and 4.5 at depth of four miles. is 4.5 closer to nine miles down? >> that's the current number, can change as data updating. >> if it was deeper can make it less or more widely felt, is that correct? fact it's nine miles down explain why 4.5 was widely felt? >> yes. but other thing to remember is small earthquakes can produce strong shaking and can be more noticeable because tend to be higher frequencies. larger magnitude can be predominantly lower frequency, swaying motion and can be less noticeable. >> interesting. lesser magnitude quake can create more shaking? >> that you feel. that you feel as a human. >> what do you expect to happen the next few hours, days? what can people expect? >> probably continue to be a series of a